Journal articles on the topic 'Geology South Australia Eateringinna Region'

Caladenia contains 376 species and subspecies, of which almost all are endemic to temperate and southern semiarid Australia. Eleven species occur in New Zealand, 10 of which are endemic, and one species is widely distributed in eastern Australia and the western Pacific. Only three species occur in both south-western and south-eastern Australia. At subgeneric level, Drakonorchis is endemic to the South-west Australian Floristic Region (SWAFR), Stegostyla to eastern Australia and New Zealand, whereas three subgenera, Calonema, Phlebochilus and Elevatae occur on both sides of the Nullarbor Plain. Subgenus Caladenia is primarily eastern Australian but also extends to the western Pacific. The largest subgenera (Calonema and Phlebochilus) have radiated extensively, with Calonema exhibiting a greater concentration of species in more mesic parts of the SWAFR than Phlebochilus. Within the SWAFR, the major biogeographic division within Caladenia follows the 600-mm isohyet. Within rainfall zones, biogeographic districts for Caladenia correlate with a combination of underlying geology and surface soils. Areas of high endemism contain diverse edaphic environments. Climatic and edaphic requirements are likely to be key drivers of rarity in Caladenia, although these parameters may be acting in concert with mycorrhizal and pollinator specificity.

AbstractDetailed analysis of the distribution of archaeocyaths in five lower Cambrian sections in South China has resulted in the erection of four new archaeocyathan zones and one new archaeocyathan bed. Listed in order of ascending age, these are: theDailycyathus xiuqiensisZone; theDictyocyathus shaanxiensisZone; theSpirillicyathus duplexRange Zone; theSibirecyathus meitanensisRange Zone; and theArchaeocyathus yanjiaoensisbeds. These new subdivisions permit a correlation of lower Cambrian strata both within the area of the Yangtze Platform (South China) as well as between this region and Siberia, Australia, Western Europe and North America. Within the Yangtze Platform area, archaeocyaths of theDailycyathus xiuqiensisandDictyocyathus shaanxiensiszones co-occur with trilobites of the middle and upperEoredlichiaTrilobite Zone of the Qiongzhusian Stage. TheSpirillicyathus duplexand theSibirecyathus meitanensisRange Zone correspond to theMalungia, Yiliangella–YunnanaspisandDrepanuroidesTrilobite zones of the basal and middle Canglangpuan Stage, respectively. Finally, theArchaeocyathus yanjiaoensisbeds belong to thePalaeolenus fengyangensisTrilobite Zone of the upper Canglangpuan Stage. Global correlations based on archaeocyath assemblage zones suggest that: (1) the middle–upper Qiongzhusian of South China correlates with the middle Atdabanian Stage of the Siberian Platform, theWarriootacyathus wilkawillinensisArchaeocyath Zone in South Australia, the middle Issendalenian Stage of Morocco and the lower Ovetian Stage in Spain; (2) the lowermost Canglangpuan Stage of South China correlates with the uppermost Atdabanian of the Siberian Platform, theSpirillicyathus tenuis – Jugalicyathus tardusarchaeocyath zones in South Australia, the uppermost Issendalenian – lower Banian stages of Morocco, the middle Ovetian Stage of Spain and the middle Montezuman Stage of North America; (3) the middle Canglangpuan Stage approximates the lowermost Botoman Stage of the Siberian Platform, middle Banian Stage of Morocco, the uppermost Ovetian – lowermost Marianian stages of Spain and the upper Montezuman Stage of North America; (4) the uppermost Canglangpuan Stage is equivalent of the middle Toyonian Stage of the Siberian Platform,Archaeocyathus abacusbeds in Australia, the middle Bilbilian Stage in Spain and the middle Dyeran Stage (Bolbolenellus eurypariaTrilobite Zone) in North America.

Although the Indo-Pacific is the global centre of diversity for the heterobranch sea slugs, their distribution remains, in many places, largely unknown. On the Australian east coast, their diversity decreases from approximately 1000 species in the northern Great Barrier Reef to fewer than 400 in Bass Strait. While occurrence records for some of the more populated sections of the coast are well known, data are patchy for more remote areas. Many species have very short lifecycles, so they can respond rapidly to changes in environmental conditions. The New South Wales coast is a recognised climate change hot-spot and southward shifts in distribution have already been documented for several species. However, thorough documentation of present distributions is an essential prerequisite for identifying further range extensions. While distribution data are available in the public realm, much is also held privately as photographic collections, diaries and logs. This paper consolidates the current occurrence data from both private and public sources as part of a broader study of sea slug distribution in south-eastern Australia and provides an inventory by region. A total of 382 species, 155 genera and 54 families is reported from the mainland coast of New South Wales.

Abstract In Australia, the onset of human occupation (≥65 ka?) and dispersion across the continent are the subjects of intense debate and are critical to understanding global human migration routes. New-generation multi-collector mass spectrometers capable of high-precision 40Ar/39Ar dating of young (<500 ka) samples provide unprecedented opportunities to improve temporal constraints of archaeological events. In southeastern Australia, a novel approach to improving understanding of occupation involves dating key volcanic eruptions in the region, referenced to stone artifacts and Aboriginal oral traditions. The current study focuses on two monogenetic volcanoes in the Newer Volcanic Province of southeastern Australia: Budj Bim (previously Mount Eccles) and Tower Hill. Budj Bim and its surrounding lava landforms are of great cultural significance and feature prominently in the oral traditions of the Gunditjmara people. Tower Hill is of archaeological significance due to the occurrence of a stone tool beneath tephra. 40Ar/39Ar eruption ages of 36.9 ± 3.1 ka (95% confidence interval) and 36.8 ± 3.8 ka (2σ) were determined for the Budj Bim and Tower Hill volcanic complexes, respectively. The Tower Hill eruption age is a minimum age constraint for human presence in Victoria, consistent with published optically stimulated luminescence and 14C age constraints for the earliest known occupation sites in Tasmania, New South Wales, and South Australia. If aspects of oral traditions pertaining to Budj Bim or its surrounding lava landforms reflect volcanic activity, this could be interpreted as evidence for these being some of the oldest oral traditions in existence.

Abstract There is geological evidence for widespread deformation in the Kaapvaal craton, South Africa, between 2.2 and 2.0 Ga. In Griqualand West, post-Ongeluk Formation (ca. 2.42 Ga) and pre-Mapedi Formation (>1.91 Ga) folding, faulting, and uplift have been linked to the development of a regional-scale unconformity, weathering horizons, and extensive Fe-oxide mineralization. However, the lack of deformational fabrics and the low metamorphic temperatures (<300 °C) have hampered efforts to date this event. Here we show that metamorphic monazite in Neoarchean shales from four stratigraphic intervals from the Griqualand West region grew at ca. 2.15 Ga, >400 m.y. after deposition. Combined with previous studies, our results show that sedimentary successions across the Kaapvaal craton deposited before ca. 2.26 Ga record evidence for crustal fluid flow at ca. 2.15 Ga, which is locally associated with thrust faulting, folding, and cleavage development. The style of the deformation is similar to that of the Ophthalmian orogeny in the Pilbara craton, Australia, which is interpreted to reflect the northeast-directed movement of a fold-thrust belt between 2.22 and 2.15 Ga. Our results suggest that the Kaapvaal and Pilbara cratons, which some paleogeographic reconstructions place together as the continent Vaalbara, experienced an episode of synchronous folding and thrusting at ca. 2.15 Ga. Deformation was followed by uplift and the development of unconformities that are associated with some of Earth’s oldest oxidative weathering and with the onset of Fe-oxide mineralization.

AbstractThick successions of turbidites are widespread in the Ross–Delamerian and Lachlan orogens and are now dispersed through Australia, Antarctica and New Zealand. U-Pb detrital zircon age patterns for latest Precambrian, Cambrian and Ordovician metagreywackes show a closely related provenance. The latest Neoproterozoic–early Palaeozoic sedimentary rocks have major components, at c. 525, 550, and 595 Ma, i.e. about 40–80 million years older than deposition. Zircons in these components increase from the Neoproterozoic to Ordovician. Late Mesoproterozoic age components, 1030 and 1070 Ma, probably originate from igneous/metamorphic rocks in the Gondwanaland hinterland whose exact locations are unknown. Although small, the youngest zircon age components are coincident with estimated depositional ages suggesting that they reflect contemporaneous and minor, volcanic sources. Overall, the detrital zircon provenance patterns reflect the development of plutonic/metamorphic complexes of the Ross–Delamerian Orogen in the Transantarctic Mountains and southern Australia that, upon exhumation, supplied sediment to regional scale basin(s) at the Gondwana margin. Tasmanian detrital zircon age patterns differ from those seen in intra-Ross Orogen sandstones of northern Victoria Land and from the oldest metasediments in the Transantarctic Mountains. A comparison with rocks from the latter supports an allochthonous western Tasmania model and amalgamation with Australia in late Cambrian time.

Abstract Recurring progression from S- to I- to A-type granites has been proposed for a subset of granitic rocks in eastern Australia. The wider applicability and the validity of this idea is explored using the Cape Granite Suite (CGS) of South Africa and the granitic and silicic volcanic rocks of central Victoria, in southeastern Australia. Within the CGS there is presently little justification for the notion that there is a clear temporal progression from early S-type, through I-type to late A-type magmatism. The I- and S-type rocks are certainly spatially separated. However, apart from a single slightly older pluton (the Hoedjiespunt Granite) there is no indication that the S- and I-type granites are temporally distinct. One dated A-type granitic sample and a syenite have poorly constrained dates that overlap with those of the youngest S-type granites. In central Victoria, the granitic magma types display neither a spatial separation nor a temporal progression from one type to another. All magma varieties are present together and were emplaced within a far narrower time window than in the CGS. Thus, a progression may or may not exist in a particular region, and the occurrence of such a progression does not hold true even in a part of southeastern Australia, which afforded the type example. Thus, the idea that, globally, there should be a progression from S- to I- to A-type magmatism is unjustified. The critical factor in determining the temporal relationship between granitic magmas of different types is probably the compositional structure of the deep crust in a particular region, a reflection of how the individual orogen was assembled. In turn, this must reflect significant differences in the tectonic settings.

Regional geophysics research provides for prospect assessment of Timor-Leste, part of the Southeast Asia Archipelago in a region embracing the Banda Arc, Timor Island, and the northwest Australia Gondwana continental margin edge. Timor Island is a microcontinent with several distinct tectonic provinces that developed initially by rifting and drifting away from the Australian Plate. A compressive convergence began in the Miocene whereby the continental edge of the large craton collided with the microcontinent, forming a subduction zone under the island. The bulk of Timor Island consists of a complex mélange of Tertiary, Cretaceous, Jurassic, Triassic, Permian, and volcanic features over a basal Gondwana craton. Toward the north, the offshore consists of a Tertiary minibasin facing the Banda Arc Archipelago, with volcanics interspersed onshore with the basal Gondwana pre-Permian. A prominent central overthrust nappe of Jurassic and younger layers makes up the mountains of Timor-Leste, terminating south against an accretionary wedge formed by this ongoing collision of Timor and Australia. The northern coast of the island is part of the Indonesian back arc, whereas the southern littoral onshore plus shallow waters are part of the accretionary prism. Deepwater provinces embrace the Timor Trough and the slope of the Australian continental margin being the most prospective region of Timor-Leste. Overall crust and mantle tectonic structuring of Timor-Leste is interpreted from seismic and potential field data, focusing mostly on its southern offshore geology where hydrocarbon prospectivity has been established with interpretation of regional seismic data and analyses of gravity, magnetic, and earthquake data. Well data tied to seismic provides focal points for stratigraphic correlation. Although all the known producing hydrocarbon reservoirs of the offshore are Jurassic sands, interpretation of Permian and Triassic stratigraphy provides knowledge for future prospect drilling risk assessment, both onshore and offshore.

Abstract Ashgillian graptolites have been described and recorded globally from 15 different paleoplates. The most diverse graptolite faunas are from the Yangtze region, South China, including 28 genera and 96 species. Among them, 25 genera and 73 species belong to the DDO fauna (Dicranograptidae – Diplograptidae – Orthograptidae fauna), and only three genera but 23 species belong to the N fauna (Normalograptidae fauna). Among the Yangtze graptolite fauna there are six endemic genera and 51 endemic species, which represent 21% and 52%, respectively, of the Ashgillian fauna in the region. This is an unusually high level of endemism. Endemic species are present in both the endemic and the cosmopolitan genera. A late Ashgillian stepwise extinction event has recently been recognized, based on graptolite diversity changes and graphic correlation. This begins with a major extinction from the Diceratograptus mirus Subzone to the middle Normalograptus extraordinarius-N. ojsuensis Zone, and ends with a minor extinction prior to the end of the Normalograptus persculptus Zone. Graptolite faunal replacement of the DDO fauna by the N fauna occurred throughout this interval. A comparison of Ashgillian graptolite diversity between the Yangtze region and other regions indicates that two different biogeographical realms existed in mid-Ashgillian time. A moderate-diversity graptolite fauna is present in the low-middle latitude realm, which includes South Scotland, Kazakhstan, Kolyma, Nevada, Yukon, Canadian Arctic, SE Australia. The Yangtze region was located in this realm, but was characterized by a very high-diversity fauna. Some other localities, including eastern Avalonia (Wales and England), the Argentina Precordillera, and Bohemia, which mainly represent the mid- to high-latitude realm, contain the lower-diversity mid-Ashgillian assemblages. This biogeographical distribution suggests a latitudinal diversity gradient, which may be controlled mainly by water temperature. This climate gradient becomes much less evident by late Hirnantian time in which most parts of the world have a relatively low diversity fauna totally dominated by normalograptid species, many of which appear to have been eurytopic. Throughout the Ashgillian, however, the Yangtze platform shows a high diversity and long persistence of DDO taxa the mass extinction interval. This may be a consequence of the semi-restricted nature of the basin in which conditions relatively favorable to graptolite survival and speciation existed throughout all or most of the Hirnantian.

As in many growing urban areas, the prevention of environmental damage as Sydney spreads westward into the Hawkesbury-Nepean River basin is a major challenge for planners, managers and the local community, We surveyed macroinvertebrates at 45 river and stream sites in April-June 1996, and reviewed data from other sources, in order to assess the issues involved in conservation of the lotic macro invertebrate fauna, Regional richness is high with 443 recorded species and morphospecies, Cluster analysis showed community pattems related mainly to waterway size (separating the Hawkesbury-Nepean River from tributary streams), geology (tributaries on shale or sandstone), tidal intrusion and urbanization (impoverished faunas in urban streams). The ability of genus richness of mites and major insect orders to reflect overall genus richness at a site was limited, and Diptera and Trichoptera appear to have the greatest value as biodiversity predictors. Urban expansion is the major threat to lotic macro invertebrate communities in the region, but agriculture, flow regulation, sand and gravel ex1raction and introduced species have probably also impacted on the fauna, Streams with high conservation value for macroinvertebrates include those few on the Cumberland Plain and surrounding slopes that retain substantial indigenous vegetation in relatively undeveloped catchments. The Hawkesbury-Nepean River sfill harbours a rich faunal community and is also important for conservation, The development of effective strategies for conservation assessment and management is problematic for several reasons, Some species in the region are known to be vulnerable, but the status of most cannot be assessed because of a lack of taxonomic and zoogeographic information, Most "biodiversity indicator" concepts are of dubious value for aquatic macroinvertebrate conservation. A multi-faceted management approach emphasizing subcatchment reserves, riparian restoration and the control of threatening processes is required.

Context Research on species’ habitat associations is strengthened if it combines coarse-grained landscape data with finer-scale parameters. However, due to the effort required to measure fine-scale parameters, studies on threatened species that unite these two scales remain relatively rare. Aim This study aimed to undertake a multi-scale analysis of the habitat association of the threatened Petrogale lateralis (MacDonnell Ranges race) in the Anangu Pitjantjatjara Yankunytjatjara (APY) Lands, South Australia. Method Analyses were conducted at four spatial scales: (1) across the Central Ranges IBRA Region (regional scale); (2) on hills in the APY Lands at which P. lateralis is extant and extinct (site scale); (3) at ‘core’ and ‘non-core’ areas within those hills (hillside scale); and (4) at rocky refuges. The maximum entropy approach through the software MaxEnt was used for the analysis at the regional scale. At the remaining scales, fieldwork was used to collect, and regression modelling to analyse, data. Key results At the regional scale, presence was associated with slope and geology. At the site scale, aspect, rock abundance and habitat type are likely to have facilitated animal persistence at extant sites. At the hillside scale, the aspect, vegetation type and rock complexity of core areas are likely to have contributed to their higher use. Size, exposure and accessibility were significant predictors of the use of rocky refuges. Conclusions All four spatial scales yielded novel information on the habitat associations of P. lateralis, supporting previous researchers’ suggestions that habitat modelling should be conducted at multiple spatial scales. Implications The study exemplifies the utility of combining MaxEnt modelling with fieldwork-derived data. The results may have conservation implications for this threatened race, and may also provide a model for other studies of faunal habitat associations.

New populations of the two species of calanoid copepods known to inhabit freshwater lakes in East Antarctica, Boeckella poppei (Mrázek, 1901) and Gladioferens antarcticus Bayly, 1994, have recently been discovered. The morphology of the populations of B. poppei showed significant differences, notably a reduction in the armature of the male fifth leg, when compared with typical specimens from the Antarctic Peninsula and South America. Gladioferens antarcticus had previously been recorded from a single lake in the Bunger Hills, but has now been recorded from three further lakes in this region. A recent review of Antarctic terrestrial and limnetic zooplankton suggested that neither of these species can be considered an East Antarctic endemic, with B. poppei being listed as a recent anthropogenic introduction and G. antarcticus a ‘marine interloper’. We conclude differently: B. poppei has been present in isolated populations in East Antarctica for significant lengths of time, possibly predating the current interglacial, while G. antarcticus is a true Antarctic endemic species whose ancestors have been present in the region since before Australia separated from Antarctica.

The nature of Earth’s earliest crust and the processes by which it formed remain major issues in Precambrian geology. Due to the absence of a rock record older than ∼4.02 Ga, the only direct record of the Hadean is from rare detrital zircon and that largely from a single area: the Jack Hills and Mount Narryer region of Western Australia. Here, we report on the geochemistry of Hadean detrital zircons as old as 4.15 Ga from the newly discovered Green Sandstone Bed in the Barberton greenstone belt, South Africa. We demonstrate that the U-Nb-Sc-Yb systematics of the majority of these Hadean zircons show a mantle affinity as seen in zircon from modern plume-type mantle environments and do not resemble zircon from modern continental or oceanic arcs. The zircon trace element compositions furthermore suggest magma compositions ranging from higher temperature, primitive to lower temperature, and more evolved tonalite-trondhjemite-granodiorite (TTG)-like magmas that experienced some reworking of hydrated crust. We propose that the Hadean parental magmas of the Green Sandstone Bed zircons formed from remelting of mafic, mantle-derived crust that experienced some hydrous input during melting but not from the processes seen in modern arc magmatism.

North West Java Basin is a tertiary sedimentary basin which is located in the right of the western part of the Java island. North West Java Basin is geodynamic where currently located at the rear position of the path of the volcanic arc of Java that is the result of the India-Australia plate subduction to the south towards the Eurasian plate (Explanation of Sunda) in the north. Geology structure observation is difficult to be conducted at Quaternary volcanicfield due to the classical problem at tropical region. In the study interpretation of fault structures can be done on a cross-section of Pre-Stack Depth Migration (PSDM) used prayer namely Hardware Key Device, ie Central Processing Unit: RedHat Enterprise Linux AS 5.0, prayer Monitor 24-inch pieces, Server: SGI altix 450/SuSe Linux Enterprise Server 9.0, 32 GB, 32 X 2,6 GHz Procesor, network: Gigabyte 1 Gb/s, and the software used is paradigm, product: Seismic Processing and Imaging. The third fault obtained in this study in accordance with the geological information derived from previous research conducted by geologists. The second general direction is northwest-southeast direction represented by Baribis fault, fault-fault in the Valley Cimandiri and Gunung Walat. This direction is often known as the directions Meratus (Meratus Trend). Meratus directions interpreted as directions that follow the pattern of continuous arc Cretaceous age to Meratus in Kalimantan.

Coprosma is perhaps the most ubiquitous plant genus in New Zealand. It belongs to the tribe Anthospermeae, which is distinctive in the family Rubiaceae through its small, simple, wind-pollinated flowers and its southern hemisphere distribution. The tribe comprises four main clades found respectively in South Africa, Africa, Australia and the Pacific. The high level of allopatry among the four subtribes is attributed here to their origin by vicariance. The Pacific clade, subtribe Coprosminae, is widespread around the margins of the South Pacific and also occurs on most of the high islands. Distributions of the main clades in the subtribe are mapped here and are shown to be repeated in other groups. The distribution patterns also coincide with features of regional geology. Large-scale volcanism has persisted in the central Pacific region since at least the Jurassic. At that time, the oldest of the Pacific large igneous provinces, the Shatsky Rise, began to be erupted in the region now occupied by French Polynesia. Large-scale volcanism in the central Pacific continued through the Cretaceous and the Cenozoic. The sustained volcanism, along with details of the clade distributions, both suggest that the Coprosminae have persisted in the central Pacific by survival of metapopulations on individually ephemeral islands. It is also likely that vicariance of metapopulations has taken place, mediated by processes such as the subsidence of the Pacific seafloor by thousands of metres, and rifting of active arcs by transform faults. It is sometimes argued that a vicariance origin is unlikely for groups on young, oceanic islands that have never been connected by continuous land, but metapopulation vicariance does not require physical contact between islands.

AbstractThis paper presents projected changes in extreme temperature and precipitation events by using Coupled Model Intercomparison Project phase 6 (CMIP6) data for mid-century (2036–2065) and end-century (2070–2099) periods with respect to the reference period (1985–2014). Four indices namely, Annual maximum of maximum temperature (TXx), Extreme heat wave days frequency (HWFI), Annual maximum consecutive 5-day precipitation (RX5day), and Consecutive Dry Days (CDD) were investigated under four socioeconomic scenarios (SSP1-2.6; SSP2-4.5; SSP3-7.0; SSP5-8.5) over the entire globe and its 26 Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX) regions. The projections show an increase in intensity and frequency of hot temperature and precipitation extremes over land. The intensity of the hottest days (as measured by TXx) is projected to increase more in extratropical regions than in the tropics, while the frequency of extremely hot days (as measured by HWFI) is projected to increase more in the tropics. Drought frequency (as measured by CDD) is projected to increase more over Brazil, the Mediterranean, South Africa, and Australia. Meanwhile, the Asian monsoon regions (i.e., South Asia, East Asia, and Southeast Asia) become more prone to extreme flash flooding events later in the twenty-first century as shown by the higher RX5day index projections. The projected changes in extremes reveal large spatial variability within each SREX region. The spatial variability of the studied extreme events increases with increasing greenhouse gas concentration (GHG) and is higher at the end of the twenty-first century. The projected change in the extremes and the pattern of their spatial variability is minimum under the low-emission scenario SSP1-2.6. Our results indicate that an increased concentration of GHG leads to substantial increases in the extremes and their intensities. Hence, limiting CO2 emissions could substantially limit the risks associated with increases in extreme events in the twenty-first century.

AbstractSulawesi is an island located in the Wallacean region of Indonesia. Geologically its lying midway between the Asian (Sunda) and Greater Australian (Sahul) continents. As a part of Wallacea islands, Sulawesi is an island that shows complexity either in biology or geology perspective. Though the distinctive quaternary vertebrate faunas has been described from Sulawesi, historical pattern of biogeography still poorly understood due to the lack of the fossil specimens. This paper describes a maxilla fragment with molar root teeth M1 from an archaic proboscidae called Stegodon that found in the conglomeratic sandstone layer, at Cangkange Area, 4 km to the east of Cabenge Archeological site of South Sulawesi, Indonesia. Based on the comparation measuring data between this specimen with the Stegodon sompoensis and the Stegodon trigonocephalus it can be concluded that this Stegodon maxilla fragment is belong to the Stegodon sompoensis, a dwarf Stegodon from Sulawesi Island. The specimen is a surface collected sample. Based on the attached matrix on the maxilla fragment, this specimen interpreted to be derived from subunit A of Beru Member, Walanae Formation. This Stegodon sompoensis is likely to be lived near the coastal-lagoon around 2,5 million years ago or Late Pliocene to Early Pleistocene. This estimated specimen age is based on the vertebrate fauna biostratigraphy of South Sulawesi. ABSTRAKPulau Sulawesi di Indonesia terletak di daerah Wallacea. Secara geologi pulau ini berada di antara Asia (paparan Sunda) dan Australia (paparan Sahul). Sebagai bagian dari kepulauan Wallacea, Pulau Sulawesi merupakan pulau yang memiliki kompleksitas baik dari segi biologi maupun geologinya. Meskipun fauna-fauna vertebrata kuarter Sulawesi sudah dideskripsi, tetapi sejarah dan pola biogeografi di pulau ini masih sangat kurang dikarenakan sedikitnya fosil-fosil yang ditemukan. Tulisan ini mendeskripsikan fragmen maxilla dari gajah purba jenis Stegodon dengan akar gigi molar M1 yang ditemukan di perlapisan batupasir konglomeratan, di daerah Cangkange, sekitar 4 km ke arah timur dari situs arkeologi Cabenge, Sulawesi Selatan, Indonesia. Berdasarkan perbandingan data pengukuran spesimen ini dengan Stegodon sompoensis dan Stegodon trigonocephalus maka disimpulkan bahwa fragmen maksila Stegodon ini berasal dari Stegodon sompoensis, jenis Stegodon kerdil dari Pulau Sulawesi. Spesimen ini merupakan temuan permukaan, tetapi berdasarkan matriks sedimen yang masih menempel di maxilla, spesimen ini diinterpretasikan berasal dari Anggota Beru subunit A. Stegodon sompoensis ini diperkirakan dahulu hidup di lingkungan lagoon dekat pantai pada sekitar 2,5 juta tahun yang lalu atau Pliosen Akhir sampai Pleistosen Awal. Penentuan umur ini didasarkan pada boistratigrafi fauna vertebrata Sulawesi Selatan.

The Olympic Cu-Au Province is a metallogenic province in South Australia that contains one of the world’s most significant Cu-Au-U resources in the Olympic Dam deposit. The Olympic Cu-Au Province also hosts a range of other iron oxide-copper-gold (IOCG) deposits including Prominent Hill and Carrapateena. This paper reviews the geology of the Olympic Cu-Au Province by investigating the lithospheric architecture, geodynamic setting and alteration systematics. In addition, since the province is almost entirely buried by post-mineral cover, the sedimentary cover sequences are also reviewed. The Olympic Cu-Au Province formed during the early Mesoproterozoic, ca. 1.6 Ga and is co-located with a fundamental lithospheric boundary in the eastern Gawler Craton. This metallogenic event was driven in part by melting of a fertile, metasomatized sub-continental lithospheric mantle during a major regional tectonothermal event. Fluid evolution and multiple fluid mixing resulted in alteration assemblages that range from albite, magnetite and other higher temperature minerals to lower temperature assemblages such as hematite, sericite and chlorite. IOCG mineralisation is associated with both high and low temperature assemblages, however, hematite-rich IOCGs are the most economically significant. Burial by Mesoproterzoic and Neoproterozoic-Cambrian sedimentary successions preserved the Olympic Cu-Au Province from erosion, while also providing a challenge for mineral exploration in the region. Mineral potential modelling identifies regions within the Olympic Cu-Au Province and adjacent Curnamona Province that have high prospects for future IOCG discoveries. Exploration success will rely on improvements in existing potential field and geochemical data, and be bolstered by new 3D magnetotelluric surveys. However, drilling remains the final method for discovery of new mineral resources.

The Heazlewood-Luina-Waratah area is a prospective region for minerals in northwest Tasmania, Australia, associated with historically important ore deposits related to the emplacement of granite intrusions and/or ultramafic complexes. The geology of the area is poorly understood due to the difficult terrain and dense vegetation. We have constructed an initial high-resolution 3D geologic model of this area using constraints from geologic maps and geologic and geophysical cross sections. This initial model is improved upon by integrating results from 3D geometry and physical property inversion of potential field (gravity and magnetic) data, petrophysical measurements, and updated field mapping. Geometry inversion reveals that the Devonian granites in the south are thicker than previously thought, possibly connecting to deep sources of mineralization. In addition, we identified gravity anomalies to the northeast that could be caused by near-surface granite cupolas. A newly discovered ultramafic complex linking the Heazlewood and Mount Stewart Ultramafic Complexes in the southwest also has been modeled. This implies a greater volume of ultramafic material in the Cambrian successions and points to a larger obducted component than previously thought. The newly inferred granite cupolas and ultramafic complexes are targets for future mineral exploration. Petrophysical property inversion reveals a high degree of variation in these properties within the ultramafic complexes indicating a variable degree of serpentinization. Sensitivity tests suggest maximum depths of 2–3 km for the contact aureole that surrounds major granitic intrusions in the southeast, whereas the Heazlewood River complex is likely to have a deeper source up to 4 km. We have demonstrated the value of adding geologic and petrophysical constraints to 3D modeling for the purpose of guiding mineral exploration. This is particularly important for the refinement of geologic structures in tectonically complex areas that have lithology units with contrasting magnetic and density characteristics.

The Barrow and Dampier Sub-basins of the Northern Carnarvon Basin developed by repeated reactivation of long-lived basement structures during Palaeozoic and Mesozoic tectonism. Inherited basement fabric specific to the terranes and mobile belts in the region comprise northwest, northeast, and north–south-trending Archaean and Proterozoic structures. Reactivation of these structures controlled the shape of the sub-basin depocentres and basement topography, and determined the orientation and style of structures in the sediments.The Lewis Trough is localised over a reactivated NEtrending former strike-slip zone, the North West Shelf (NWS) Megashear. The inboard Dampier Sub-basin reflects the influence of the fabric of the underlying Pilbara Craton. Proterozoic mobile belts underlie the Barrow Sub-basin where basement fabric is dominated by two structural trends, NE-trending Megashear structures offset sinistrally by NS-trending Pinjarra structures.The present-day geometry and basement topography of the basins is the result of accumulated deformation produced by three main tectonic phases. Regional NESW extension in the Devonian produced sinistral strikeslip on NE-trending Megashear structures. Large Devonian-Carboniferous pull-apart basins were introduced in the Barrow Sub-basin where Megashear structures stepped to the left and are responsible for the major structural differences between the Barrow and Dampier Sub-basins. Northwest extension in the Late Carboniferous to Early Permian marks the main extensional phase with extreme crustal attenuation. The majority of the Northern Carnarvon basin sediments were deposited during this extensional basin phase and the subsequent Triassic sag phase. Jurassic extension reactivated Permian faults during renewed NW extension. A change in extension direction occurred prior to Cretaceous sea floor spreading, manifest in basement block rotation concentrated in the Tithonian. This event changed the shape and size of basin compartments and altered fluid migration pathways.The currently mapped structural trends, compartment size and shape of the Barrow and Dampier Sub-basins of the Northern Carnarvon Basin reflect the “character” of the basement beneath and surrounding each of the subbasins.Basement character is defined by the composition, lithology, structure, grain, fabric, rheology and regolith of each basement terrane beneath or surrounding the target basins. Basement character can be discriminated and mapped with mineral exploration methods that use non-seismic data such as gravity, magnetics and bathymetry, and then calibrated with available seismic and well datasets. A range of remote sensing and geophysical datasets were systematically calibrated, integrated and interpreted starting at a scale of about 1:1.5 million (covering much of Western Australia) and progressing to scales of about 1:250,000 in the sub-basins. The interpretation produced a new view of the basement geology of the region and its influence on basin architecture and fill history. The bottom-up or basement-first interpretation process complements the more traditional top-down seismic and well-driven exploration methods, providing a consistent map-based regional structural model that constrains structural interpretation of seismic data.The combination of non-seismic and seismic data provides a powerful tool for mapping basement architecture (SEEBASE™: Structurally Enhanced view of Economic Basement); basement-involved faults (trap type and size); intra-sedimentary geology (igneous bodies, basement-detached faults, basin floor fans); primary fluid focussing and migration pathways and paleo-river drainage patterns, sediment composition and lithology.

Climate change induced sea-level rise (SLR) is on its increase globally. Regionally the lowlands of China, Vietnam, Bangladesh, and islands of the Malaysian, Indonesian and Philippine archipelagos are among the world’s most threatened regions. Sea-level rise has major impacts on the ecosystems and society. It threatens coastal populations, economic activities, and fragile ecosystems as mangroves, coastal salt-marches and wetlands. This paper provides a summary of the current state of knowledge of sea level-rise and its effects on both human and natural ecosystems. The focus is on coastal urban areas and low lying deltas in South-East Asia and Vietnam, as one of the most threatened areas in the world. About 3 mm per year reflects the growing consensus on the average SLR worldwide. The trend speeds up during recent decades. The figures are subject to local, temporal and methodological variation. In Vietnam the average values of 3.3 mm per year during the 1993-2014 period are above the worldwide average. Although a basic conceptual understanding exists that the increasing global frequency of the strongest tropical cyclones is related with the increasing temperature and SLR, this relationship is insufficiently understood. Moreover the precise, complex environmental, economic, social, and health impacts are currently unclear. SLR, storms and changing precipitation patterns increase flood risks, in particular in urban areas. Part of the current scientific debate is on how urban agglomeration can be made more resilient to flood risks. Where originally mainly technical interventions dominated this discussion, it becomes increasingly clear that proactive special planning, flood defense, flood risk mitigation, flood preparation, and flood recovery are important, but costly instruments. 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In the paleogeographic configuration of the Neoproterozoic supercontinent of Rodinia, the Tarim craton (northwestern China), traditionally seen as a single block, is placed either on the periphery near northern Australia or India or in a central position between Australia and Laurentia. To distinguish between these possibilities, we present here new primary paleomagnetic results from ca. 900 Ma volcanics in the Aksu region of the northwestern Tarim craton. The data reveal a ~28° latitudinal difference between the North Tarim and South Tarim blocks at ca. 900 Ma and constrain the age of amalgamation of the Tarim craton to between 870 and 820 Ma. Combining paleomagnetic poles from Tarim and major cratons of Rodinia with geological evidence, a two-stage orogenic model is proposed for the assembly of Rodinia. Late Mesoproterozoic orogenesis (1.3–1.0 Ga) led to the assembly of Australia–East Antarctica, Baltica, Umkondia, South Tarim, and Cathaysia with Laurentia, forming the core of Rodinia. Thereafter, the Jiangnan–Central Tarim Ocean separating North Tarim and Yangtze from South Tarim and Cathaysia was closed before ca. 820 Ma. This second Jiangnan–Central Tarim orogeny caused nearly coeval amalgamation of the peripheral Tarim and South China cratons by the welding of North Tarim and Yangtze to South Tarim and Cathaysia, respectively. The supercontinent of Rodinia was thus assembled by two orogenic phases separated by ~200 m.y.

Late Tonian to Cambrian sedimentary sequences in northwestern India and South China provide vital evidence for modeling their paleogeographic linkage, including their juxtaposition and subsequent separation during the transition from the Rodinia to the Gondwana supercontinents. Similarities in lithostratigraphy and detrital zircon U-Pb-Hf-O isotopic characteristics in the late Tonian sedimentary units from both regions underline a common provenance. A substantial decrease in zircon δ18O values from super- to sub-mantle compositions and simultaneous increase in the zircon εHf(t) values in South China and northwestern India for the 800–700 Ma time window suggest a common Neoproterozoic extensional magmatic event, corresponding with the Rodinia breakup. A distinct change in sedimentary provenance is noted during the Cryogenian period. Sedimentation along the northwestern margin of India for the remainder of the Neoproterozoic encompasses large volumes of clastic detritus dominated by old zircon ages, derived inboard from the Indian craton. In contrast, contemporaneous sedimentary units in the Yangtze region of South China are dominated by Neoproterozoic zircons. The detrital zircon age data underline a close paleogeographic linkage between northwestern India and South China (Yangtze and Cathaysia regions) in the Rodinia supercontinent configuration and argue for their separation through continental rifting during the Cryogenian. Northwestern India developed into a passive margin, whereas the South China block partially rifted, rotated, and migrated dextrally along the Gondwana margin toward northeastern India and Western Australia, such that the Cathaysia block continued to receive detritus from Gondwana continental regions.

Abstract We study the largest exposed example of an early Cambrian palaeokarst, associated with laterites and developed during rifting of the Ossa–Morena Zone. The lithostratigraphy, biostratigraphy, facies and the genesis reflect episodes of sea-level fall (Cerro del Hierro Regression) related to tectonic events and palaeoclimate. This palaeokarst can be primarily considered as the result of early Cambrian polyphase karstification in an extensional tectonic regime, later modified by Neogene–Quaternary geomorphological processes. The event may correlate with other regressive events of a similar age in Spain, Italy, United Kingdom, South America and Australia. This episode also has local names (e.g. Cerro del Hierro Regression in the Mediterranean region; Woodlands Regression in the UK). It is sometimes accompanied by additional karst development outside of Spain that is compared and interpreted in a global context.

The antiquity of the Australian landscape has long been the subject of debate, with some studies inferring extraordinary longevity (>108 myr) for some subaerial landforms dating back to the early Paleozoic. A number of early Permian glacial erosion surfaces in the Fleurieu Peninsula, southeastern Australia, provide an opportunity to test the notion of long-term subaerial emergence, and thus tectonic and geomorphic stability, of parts of the Australian continent. Here we present results of apatite fission track analysis (AFTA) applied to a suite of samples collected from localities where glacial erosion features of early Permian age are developed. Our synthesis of AFTA results with geological data reveals four cooling episodes (C1-4), which are interpreted to represent distinct stages of exhumation. These episodes occurred during the Ediacaran to Ordovician (C1), mid-Carboniferous (C2), Permian to mid-Triassic (C3) and Eocene to Oligocene (C4).The interpretation of AFTA results indicates that the Neoproterozoic−Lower Paleozoic metasedimentary rocks and granitic intrusions upon which the glacial rock surfaces generally occur were exhumed to the surface by the latest Carboniferous−earliest Permian during episodes C2 and/or C3, possibly as a far-field response to the intraplate Alice Springs Orogeny. The resulting landscapes were sculpted by glacial erosive processes. Our interpretation of AFTA results suggests that the erosion surfaces and overlying Permian sedimentary rocks were subsequently heated to between c. 60 and 80°C, which we interpret as recording burial by a sedimentary cover comprising Permian and younger strata, roughly 1 km in thickness. This interpretation is consistent with existing thermochronological datasets from this region, and also with palynological and geochronological datasets from sediments in offshore Mesozoic−Cenozoic-age basins along the southern Australian margin that indicate substantial recycling of Permian−Cretaceous sediments. We propose that the exhumation which led to the contemporary exposure of the glacial erosion features began during the Eocene to Oligocene (episode C4), during the initial stages of intraplate deformation that has shaped the Mt Lofty and Flinders Ranges in South Australia. Our findings are consistent with several recent studies, which suggest that burial and exhumation have played a key role in the preservation and contemporary re-exposure of Gondwanan geomorphic features in the Australian landscape.

This Tropospheric Ozone Assessment Report (TOAR) on the current state of knowledge of ozone metrics of relevance to vegetation (TOAR-Vegetation) reports on present-day global distribution of ozone at over 3300 vegetated sites and the long-term trends at nearly 1200 sites. TOAR-Vegetation focusses on three metrics over vegetation-relevant time-periods across major world climatic zones: M12, the mean ozone during 08:00–19:59; AOT40, the accumulation of hourly mean ozone values over 40 ppb during daylight hours, and W126 with stronger weighting to higher hourly mean values, accumulated during 08:00–19:59. Although the density of measurement stations is highly variable across regions, in general, the highest ozone values (mean, 2010–14) are in mid-latitudes of the northern hemisphere, including southern USA, the Mediterranean basin, northern India, north, north-west and east China, the Republic of Korea and Japan. The lowest metric values reported are in Australia, New Zealand, southern parts of South America and some northern parts of Europe, Canada and the USA. Regional-scale assessments showed, for example, significantly higher AOT40 and W126 values in East Asia (EAS) than Europe (EUR) in wheat growing areas (p &lt; 0.05), but not in rice growing areas. In NAM, the dominant trend during 1995–2014 was a significant decrease in ozone, whilst in EUR it was no change and in EAS it was a significant increase. TOAR-Vegetation provides recommendations to facilitate a more complete global assessment of ozone impacts on vegetation in the future, including: an increase in monitoring of ozone and collation of field evidence of the damaging effects on vegetation; an investigation of the effects on peri-urban agriculture and in mountain/upland areas; inclusion of additional pollutant, meteorological and inlet height data in the TOAR dataset; where not already in existence, establishing new region-specific thresholds for vegetation damage and an innovative integration of observations and modelling including stomatal uptake of the pollutant.

IntroductionI work at a regional campus of La Trobe University, Australia. More precisely, I work at the Bendigo campus of La Trobe University. At Bendigo, we are often annoyed when referred to and addressed as ‘regional’ students and staff. Really, we should not be. After all, Bendigo campus is an outpost of La Trobe’s metropolitan base. It is funded, run, and directed from Bundoora (Melbourne). The word ‘regional’ simply describes the situation. A region is an “administrative division of a city or a district [… or …] a country” (Brown 2528). And the Latin etymology of region (regio, regere) includes “direction, line”, and “rule” (Kidd 208, 589). Just as the Bendigo campus of La Trobe is a satellite of the metropolitan campus, the town of Bendigo is an outpost of Melbourne. So, when we are addressed and interpellated (Althusser 48) as regional, it is a reminder of the ongoing fact that Australia is (still) a colony, an outpost of empire, a country organised on the colonial model. From central administrative hubs, spokes of communication, and transportation spread to the outposts. When Bendigo students and staff are addressed as regional, in a way we are also being addressed as colonial.In this article, the terms ‘region’ and ‘regional’ are deployed as inextricably associated with the Australian version of colonialism. In Australia, in the central metropolitan hubs, where the colonial project is at its most comprehensive, it is hard to see what remains, to see what has escaped that project. The aim of this article is to explore how different aspects of the country escape the totalising project of Australian colonialism. This exploration is undertaken primarily through a discussion of the ways in which some places on this continent remain not regional (and thus, not colonial) how they keep the metropolis at bay, and how they, thus, keep Europe at bay. This discussion includes a general overview of the Australian colonial project, particularly as it pertains to First Nations Peoples, their knowledge and philosophies, and the continent’s unique ecologies. Then the article becomes more speculative, imagining different ways of seeing and experiencing time and place in this country, ways of seeing the remains and refuges of pre-1788, not-regional, and not-colonial Australia. In these remains and refuges, there persist the flourishing and radical difference of this continent’s ecologies and, not surprisingly, the radical suitedness of tens of thousands of years of First Nations Peoples’ culture and thinking to that ecology, as Country. In what remains not regional, I argue, are answers to the question: How will we live here in the Anthropocene?A Totalising ProjectSince 1788, in the face of the ongoing presence and resistance of First Nations cultures, and the continent’s radically unique ecologies, the Australian colonial project has been to convert the continent into a region of Europe. As such, the imposed political, administrative, scientific, and economic institutions are largely European. This is also so, to a lesser extent, of social and cultural institutions. While the continent is not Europe geologically, the notion of the Anthropocene suggests that this is changing (Crutzen and Stoermer). This article does not resummarise the vast body of scholarship on the effects of colonisation, from genocide to missionary charity, to the creation of bureaucratic and comprador classes, and so on. Suffice to say that the different valences of colonisation—from outright malevolence to misguided benevolence–produce similar and common effects. As such, what we experience in metropolitan and regional Australia, is chillingly similar to what people experience in London. Chilling, because this experience demonstrates how the effects of the project tend towards the total.To clarify, when I use the name ‘Australia’ I understand it as the continent’s European name. When I use the term ‘Europe’ or ‘European’, I refer to both the European continent and to the reach and scope of the various colonial and imperial projects of European nations. I take this approach because I think it is necessary to recognise their global effects and loads. In Australia, this load has been evident and present for more than two centuries. On one hand, it is evident in the social, cultural, and political institutions that come with colonisation. On another, it is evident in the environmental impacts of colonisation: impacts that are severely compounded in Australia. In relation to this, there is vital, ongoing scholarship that explores the fact that, ecologically, Australia is a radically different place, and which discusses the ways in which European scientific, aesthetic, and agricultural assumptions, and the associated naturalised and generic understandings of ‘nature’, have grounded activities that have radically transformed the continent’s biosphere. To name but a few, Tim Flannery (Eaters, “Ecosystems”) and Stephen Pyne, respectively, examine the radical difference of this continent’s ecology, geology, climate, and fire regimes. Sylvia Hallam, Bill Gammage, and Bruce Pascoe (“Bolt”, Emu) explore the relationships of First Nations Peoples with that ecology, climate, and fire before 1788, and the European blindness to the complexity of these relationships. For instance, William Lines quotes the strikingly contradictory observations of the colonial surveyor, Thomas Mitchell, where the land is simultaneously “populous” and “without inhabitants” and “ready for the immediate reception of civilised man” and European pastoralism (Mitchell qtd. in Lines 71). Flannery (Eaters) and Tim Low (Feral, New) discuss the impacts of introduced agricultural practices, exotic animals, and plants. Tom Griffiths tells the story of ‘Improving’ and ‘Acclimatisation Societies’, whose explicit aims were to convert Australian lands into European lands (32–48). The notion of ‘keeping Europe at bay’ is a response to the colonial assumptions, practices, and impositions highlighted by these writers.The project of converting this continent and hundreds of First Nations Countries into a region of Europe, ‘Australia’, is, in ambition, a totalising one. From the strange flag-plantings, invocations and incantations claiming ownership and dominion, to legalistic conceptions such as terra nullius, the aim has been to speak, to declare, to interpellate the country as European. What is not European, must be made European. What cannot be made European is either (un)seen in a way which diminishes or denies its existence, or must be made not to exist. These are difficult things to do: to not see, to unsee, or to eradicate.One of the first acts of administrative division (direction and rule) in the Port Phillip colony (now known as Victoria) was that of designating four regional Aboriginal Protectorates. Edward Stone Parker was appointed Assistant Protector of Aborigines for the Loddon District, a district which persists today for many state and local government instrumentalities as the Loddon-Mallee region. In the 1840s, Parker experienced the difficulty described above, in attempting to ‘make European’ the Dja Dja Wurrung people. As part of Parker’s goal of Christianising Dja Dja Wurrung people, he sought to learn their language. Bain Attwood records his frustration:[Parker] remarked in July 1842. ‘For physical objects and their attributes, the language readily supplies equivalent terms, but for the metaphysical, so far I have been able to discover scarcely any’. A few years later Parker simply despaired that this work of translation could be undertaken. ‘What can be done’, he complained, ‘with a people whose language knows no such terms as holiness, justice, righteousness, sin, guilt, repentance, redemption, pardon, peace, and c., and to whose minds the ideas conveyed by those words are utterly foreign and inexplicable?’ (Attwood 125)The assumption here is that values and concepts that are ‘untranslatable’ into European understandings mark an absence of such value and concept. Such assumptions are evident in attempts to convince, cajole, or coerce First Nations Peoples into abandoning traditional cultural and custodial relationships with Country in favour of individual private property ownership. The desire to maintain relationships with Country are described by conservative political figures such as Tony Abbott as “lifestyle choices” (Medhora), effectively declaring them non-existent. In addition, processes designed to recognise First Nations relationships to Country are procedurally frustrated. Examples of this are the bizarre decisions made in 2018 and 2019 by Nigel Scullion, the then Indigenous Affairs Minister, to fund objections to land claims from funds designated to alleviate Indigenous disadvantage and to refuse to grant land rights claims even when procedural obstacles have been cleared (Allam). In Australia, given that First Nations social, cultural, and political life is seamlessly interwoven with the environment, ecology, the land–Country, and that the colonial project has always been, and still is, a totalising one, it is a project which aims to sever the connections to place of First Nations Peoples. Concomitantly, when the connections cannot be severed, the people must be either converted, dismissed, or erased.This project, no matter how brutal and relentless, however, has not achieved totality.What Remains Not Regional? If colonisation is a totalising project, and regional Australia stands as evidence of this project’s ongoing push, then what remains not regional, or untouched by the colonial? What escapes the administrative, the institutional, the ecological, the incantatory, and the interpellative reach of the regional? I think that despite this reach, there are such remains. The frustration, the anger, and antipathy of Parker, Abbott, and Scullion bear this out. Their project is unfinished and the resistance to it infuriates. I think that, in Australia, the different ways in which pre-1788 modes of life persist are modes of life which can be said to be ‘keeping Europe at bay’.In Reports from a Wild Country: Ethics for Decolonisation, Deborah Bird Rose compares Western/European conceptualisations of time, with those of the people living in the communities around the Victoria River in the Northern Territory. Rose describes Western constructions of time as characterised by disjunction (for example, the ‘birth’ of philosophy, the beginnings of Christianity) and by irreversible sequence (for example, concepts of telos, apocalypse, and progress). These constructions have become so naturalised as to carry a “seemingly commonsensical orientation toward the future” (15). Orientation, in an Australian society “built on destruction, enables regimes of violence to continue their work while claiming the moral ground of making a better future” (15). Such an orientation “enables us to turn our backs on the current social facts of pain, damage, destruction and despair which exist in the present, but which we will only acknowledge as our past” (17).In contrast to this ‘future vision’, Rose describes what she calls the ‘canonical’ time-space conceptualisation of the Victoria River people (55). Here, rather than a temporal extension into an empty future, orientation is towards living, peopled, and grounded origins, with the emphasis on the plural, rather than a single point of origin or disjunction:We here now, meaning we here in a shared present, are distinct from the people of the early days by the fact that they preceded us and made our lives possible. We are the ‘behind mob’—those who come after. The future is the domain of those who come after us. They are referred to as […] those ‘behind us’. (55)By way of illustration, when we walk into a sheep paddock, even if we are going somewhere (even the future), we are also irrevocably walking behind ancestors, predecessor ecologies, previous effects. The paddock, is how it is, after about 65,000 years of occupation, custodianship, and management, after European surveyors, squatters, frontier conflict and violence, the radical transformation of the country, the destruction of the systems that came before. Everything there, as Freya Mathews would put it, is of “the given” (“Becoming” 254, “Old” 127). We are coming up behind. That paddock is the past and present, and what happens next is irrevocably shaped by it. We cannot walk away from it.What remains not regional is there in front of us. Country, language, and knowledge remain in the sheep paddock, coexisting with everyone and everything else that everyone in this country follows (including the colonial and the regional). It is not gone. We have to learn how to see it.By the Fox or the Little EagleFigure 1: A Scatter of Sulphur-Crested Cockatoo Feathers at Wehla. Image Credit: Terry Eyssens.As a way of elaborating on this, I will tell you about a small, eight hectare, patch of land in Dja Dja Wurrung Country. Depending on the day, or the season, or your reason, it could take fifteen minutes to walk from one end to the other or it might take four hours, from the time you start walking, to the time when you get back to where you started. At this place, I found a scatter of White Cockatoo feathers (Sulphur-Crested Cockatoo—Cacatua galerita). There was no body, just the feathers, but it was clear that the Cockatoo had died, had been caught by something, for food. The scatter was beautiful. The feathers, their sulphur highlights, were lying on yellow-brown, creamy, dry grass. I dwelled on the scatter. I looked. I looked around. I walked around. I scanned the horizon and squinted at the sky. And I wondered, what happened.This small patch of land in Dja Dja Wurrung Country is in an area now known as Wehla. In the Dja Dja Wurrung and many other Victorian languages, ‘Wehla’ (and variants of this word) is a name for the Brushtail Possum (Trichosurus vulpecula). In the time I spend there/here, I see all kinds of animals. Of these, two are particularly involved in this story. One is the Fox (Vulpes vulpes), which I usually see just the back of, going away. They are never surprised. They know, or seem to know, where everyone is. They have a trot, a purposeful, cocky trot, whether they are going away because of me or whether they are going somewhere for their own good reasons. Another animal I see often is the Little Eagle (Hieraaetus morphnoides). It is a half to two-thirds the size of a Wedge-tailed Eagle (Aquila audax). It soars impressively. Sometimes I mistake a Little Eagle for a Wedge-tail, until I get a better look and realise that it is not quite that big. I am not sure where the Little Eagle’s nest is but it must be close by.I wondered about this scatter of White Cockatoo feathers. I wondered, was the scatter of White Cockatoo feathers by the Fox or by the Little Eagle? This could be just a cute thought experiment. But I think the question matters because it provokes thinking about what is regional and what remains not regional. The Fox is absolutely imperial. It is introduced and widespread. Low describes it as among Australia’s “greatest agent[s] of extinction” (124). It is part of the colonisation of this place, down to this small patch of land in Dja Dja Wurrung Country. Where the Fox is, colonisation, and everything that goes with it, remains, and maintains. So, that scatter of feathers could be a colonial, regional happening. Or maybe it is something that remains not regional, not colonial. Maybe the scatter is something that escapes the regional. The Little Eagles and the Cockatoos, who were here before colonisation, and their dance (a dance of death for the Cockatoo, a dance of life for the Little Eagle), is maybe something that remains not regional.But, so what if the scatter of White Cockatoo feathers, this few square metres of wind-blown matter, is not regional? Well, if it is ‘not regional’, then, if Australia is to become something other than a colony, we have to look for these things that are not regional, that are not colonial, that are not imperial. Maybe if we start with a scatter of White Cockatoo feathers that was by the Little Eagle, and then build outwards again, we might start to notice more things that are not regional, that still somehow escape. For example, the persistence of First Nations modes of land custodianship and First Nations understandings of time. Then, taking care not to fetishise First Nations philosophies and cultures, take the time and care to recognise the associations of all of those things with simply, the places themselves, like a patch of land in Dja Dja Wurrung Country, which is now known as Wehla. Instead of understanding that place as something that is just part of the former Aboriginal Protectorate of Loddon or of the Loddon Mallee region of Victoria, it is Wehla.The beginning of decolonisation is deregionalisation. Every time we recognise the not regional (which is hopefully, eventually, articulated in a more positive sense than ‘not regional’), and just say something like ‘Wehla’, we can start to keep Europe at bay. Europe’s done enough.seeing and SeeingChina Miéville’s The City and The City (2009) is set in a place, in which the citizens of two cities live. The cities, Besźel and Ul Qoma, occupy the same space, are culturally and politically different. Their relationship to each other is similar to that of border-sharing Cold War states. Citizens of the two cities are forbidden to interact with each other. This prohibition is radically policed. Even though the citizens of Besźel and Ul Qoma live in adjoining buildings, share roads, and walk the same streets, they are forbidden to see each other. The populations of each city grow up learning how to see what is permitted and to not see, or unsee, the forbidden other (14).I think that seeing a scatter of White Cockatoo feathers and wondering if it was by the Fox or by the Little Eagle is akin to the different practices of seeing and not seeing in Besźel and Ul Qoma. The scatter of feathers is regional and colonial and, equally, it is not. Two countries occupy the same space. Australia and a continent with its hundreds of Countries. What remains not regional is what is given and Seen as such. Understanding ourselves as walking behind everything that has gone before us enables this. As such, it is possible to see the scatter of White Cockatoo feathers as by the Fox, as happening in ‘regional Australia’, as thus characterised by around 200 years of carnage, where the success of one species comes at the expense of countless others. On the other hand, it is possible to See the feathers as by the Little Eagles, and as happening on a small patch of land in Dja Dja Wurrung Country, as a dance that has been happening for hundreds of thousands, if not millions, of years. It is a way of keeping Europe at bay.I think these Cockatoo feathers are a form of address. They are capable of interpellating something other than the regional, the colonial, and the imperial. A story of feathers, Foxes, and Little Eagles can remind us of our ‘behindness’, and evoke, and invoke, and exemplify ways of seeing and engaging with where we live that are tens of thousands of years old. This is both an act of the imagination and a practice of Seeing what is really there. 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