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Articoli di riviste sul tema "Geology, Structural South Australia Flinders Ranges"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 1 febbraio 2022

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1

Groves, I. M., C. E. Carman e W. J. Dunlap. "Geology of the Beltana Willemite Deposit, Flinders Ranges, South Australia". Economic Geology 98, n. 4 (1 giugno 2003): 797–818. http://dx.doi.org/10.2113/gsecongeo.98.4.797.

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2

Betts, Marissa J., Timothy P. Topper, James L. Valentine, Christian B. Skovsted, John R. Paterson e Glenn A. Brock. "A new early Cambrian bradoriid (Arthropoda) assemblage from the northern Flinders Ranges, South Australia". Gondwana Research 25, n. 1 (gennaio 2014): 420–37. http://dx.doi.org/10.1016/j.gr.2013.05.007.

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3

Eickhoff, K. H., C. C. Von Der Borch e A. E. Grady. "Proterozoic canyons of the Flinders Ranges (South Australia): submarine canyons or drowned river valleys?" Sedimentary Geology 58, n. 2-4 (agosto 1988): 217–35. http://dx.doi.org/10.1016/0037-0738(88)90070-x.

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4

Thomas, Matilda, Jonathan D. A. Clarke, Victor A. Gostin, George E. Williams e Malcolm R. Walter. "The Flinders Ranges and surrounds, South Australia: a window on astrobiology and planetary geology". Episodes 35, n. 1 (1 marzo 2012): 226–35. http://dx.doi.org/10.18814/epiiugs/2012/v35i1/022.

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5

Sandiford, Mike, Eike Paul e Thomas Flottmann. "Sedimentary thickness variations and deformation intensity during basin inversion in the Flinders Ranges, South Australia". Journal of Structural Geology 20, n. 12 (dicembre 1998): 1721–31. http://dx.doi.org/10.1016/s0191-8141(98)00088-1.

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6

Brugger, Joël, Ngaire Long, D. C. McPhail e Ian Plimer. "An active amagmatic hydrothermal system: The Paralana hot springs, Northern Flinders Ranges, South Australia". Chemical Geology 222, n. 1-2 (ottobre 2005): 35–64. http://dx.doi.org/10.1016/j.chemgeo.2005.06.007.

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7

Lubiniecki, D. C., R. C. King, S. P. Holford, M. A. Bunch, S. B. Hore e S. M. Hill. "Cenozoic structural evolution of the Mount Lofty Ranges and Flinders Ranges, South Australia, constrained by analysis of deformation bands". Australian Journal of Earth Sciences 67, n. 8 (9 febbraio 2020): 1097–115. http://dx.doi.org/10.1080/08120099.2019.1695227.

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8

Vidal‐Royo, Oskar, Mark G. Rowan, Oriol Ferrer, Mark P. Fischer, J. Carl Fiduk, David P. Canova, Thomas E. Hearon e Katherine A. Giles. "The transition from salt diapir to weld and thrust: Examples from the Northern Flinders Ranges in South Australia". Basin Research 33, n. 5 (23 giugno 2021): 2675–705. http://dx.doi.org/10.1111/bre.12579.

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9

Counts, John W., e Kathryn J. Amos. "Sedimentology, depositional environments and significance of an Ediacaran salt-withdrawal minibasin, Billy Springs Formation, Flinders Ranges, South Australia". Sedimentology 63, n. 5 (1 aprile 2016): 1084–123. http://dx.doi.org/10.1111/sed.12250.

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10

McMahon, William J., Alexander G. Liu, Benjamin H. Tindal e Maarten G. Kleinhans. "Ediacaran life close to land: Coastal and shoreface habitats of the Ediacaran macrobiota, the Central Flinders Ranges, South Australia". Journal of Sedimentary Research 90, n. 11 (30 novembre 2020): 1463–99. http://dx.doi.org/10.2110/jsr.2020.029.

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ABSTRACT The Rawnsley Quartzite of South Australia hosts some of the world's most diverse Ediacaran macrofossil assemblages, with many of the constituent taxa interpreted as early representatives of metazoan clades. Globally, a link has been recognized between the taxonomic composition of individual Ediacaran bedding-plane assemblages and specific sedimentary facies. Thorough characterization of fossil-bearing facies is thus of fundamental importance for reconstructing the precise environments and ecosystems in which early animals thrived and radiated, and distinguishing between environmental and evolutionary controls on taxon distribution. This study refines the paleoenvironmental interpretations of the Rawnsley Quartzite (Ediacara Member and upper Rawnsley Quartzite). Our analysis suggests that previously inferred water depths for fossil-bearing facies are overestimations. In the central regions of the outcrop belt, rather than shelf and submarine canyon environments below maximum (storm-weather) wave base, and offshore environments between effective (fair-weather) and maximum wave base, the succession is interpreted to reflect the vertical superposition and lateral juxtaposition of unfossiliferous non-marine environments with fossil-bearing coastal and shoreface settings. Facies comprise: 1, 2) amalgamated channelized and cross-bedded sandstone (major and minor tidally influenced river and estuarine channels, respectively), 3) ripple cross-laminated heterolithic sandstone (intertidal mixed-flat), 4) silty-sandstone (possible lagoon), 5) planar-stratified sandstone (lower shoreface), 6) oscillation-ripple facies (middle shoreface), 7) multi-directed trough- and planar-cross-stratified sandstone (upper shoreface), 8) ripple cross-laminated, planar-stratified rippled sandstone (foreshore), 9) adhered sandstone (backshore), and 10) planar-stratified and cross-stratified sandstone with ripple cross-lamination (distributary channels). Surface trace fossils in the foreshore facies represent the earliest known evidence of mobile organisms in intermittently emergent environments. All facies containing fossils of the Ediacaran macrobiota remain definitively marine. Our revised shoreface and coastal framework creates greater overlap between this classic “White Sea” biotic assemblage and those of younger, relatively depauperate “Nama”-type biotic assemblages located in Namibia. Such overlap lends support to the possibility that the apparent biotic turnover between these assemblages may reflect a genuine evolutionary signal, rather than the environmental exclusion of particular taxa.
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11

Paul, E., T. Flöttmann e M. Sandiford. "Structural geometry and controls on basement‐involved deformation in the northern Flinders Ranges, Adelaide Fold Belt, South Australia". Australian Journal of Earth Sciences 46, n. 3 (giugno 1999): 343–54. http://dx.doi.org/10.1046/j.1440-0952.1999.00711.x.

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12

Backé, Guillaume, Graham Baines, David Giles, Wolfgang Preiss e Andrew Alesci. "Basin geometry and salt diapirs in the Flinders Ranges, South Australia: Insights gained from geologically-constrained modelling of potential field data". Marine and Petroleum Geology 27, n. 3 (marzo 2010): 650–65. http://dx.doi.org/10.1016/j.marpetgeo.2009.09.001.

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13

Laflamme, Marc, James G. Gehling e Mary L. Droser. "Deconstructing an Ediacaran frond: three-dimensional preservation of Arborea from Ediacara, South Australia". Journal of Paleontology 92, n. 3 (14 marzo 2018): 323–35. http://dx.doi.org/10.1017/jpa.2017.128.

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AbstractExquisitely preserved three-dimensional examples of the classic Ediacaran (late Neoproterozoic; 570–541 Ma) frond Charniodiscus arboreus Jenkins and Gehling, 1978 (herein referred to as Arborea arborea Glaessner in Glaessner and Daily, 1959) are reported from the Ediacara Member, Rawnsley Quartzite of South Australia, and allow for a detailed reinterpretation of its functional morphology and taxonomy. New specimens cast in three dimensions within sandy event beds showcase detailed branching morphology that highlights possible internal features that are strikingly different from rangeomorph and erniettomorph fronds. Combined with dozens of well-preserved two-dimensional impressions from the Flinders Ranges of South Australia, morphological variations within the traditional Arborea morphotype are interpreted as representing various stages of external molding. In rare cases, taphomorphs (morphological variants attributable to preservation) represent composite molding of internal features consisting of structural supports or anchoring sites for branching structures. Each primary branch consists of a central primary branching stalk from which emerge several oval secondary branches, which likely correspond to similar structures found in rare two-dimensional specimens. Considering this new evidence, previous synonymies within the Arboreomorpha are no longer justified, and we suggest that the taxonomy of the group be revised.
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14

COOPER, BARRY J., e JAMES B. JAGO. "ROBERT BEDFORD (1874–1951), THE KYANCUTTA MUSEUM, AND A UNIQUE CONTRIBUTION TO INTERNATIONAL GEOLOGY". Earth Sciences History 37, n. 2 (1 gennaio 2018): 416–43. http://dx.doi.org/10.17704/1944-6178-37.2.416.

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Robert Bedford (1874–1951), based in the isolated community of Kyancutta in South Australia, was a unique contributor to world geology, specifically in the field of meteorites and fossil archaeocyatha. Born Robert Arthur Buddicom in Shropshire, UK, he was an Oxford graduate who worked as a scientist in Freiberg, Naples, Birmingham and Shrewsbury as well as with the Natural History Museum, Kensington and the Plymouth Museum in the United Kingdom. He was a Fellow of the Geological Society of London, 1899–1910. In 1915, Buddicom changed his surname to Bedford and relocated to South Australia. During the 1920s, Bedford expanded his geological interests with the establishment of a public museum in Kyancutta in 1929. This included material previously collected and stored in the United Kingdom before being sent to Australia. Bedford was very successful in collecting material from the distant Henbury meteorite craters in Australia's Northern Territory, during three separate trips in 1931–1933. He became an authority on meteorites with much Henbury material being sent to the British Museum in London. However, Bedford's work on, and collecting of, meteorites resulted in a serious rift with the South Australian scientific establishment. Bedford is best known amongst geologists for his five taxonomic papers on the superbly preserved lower Cambrian archaeocyath fossils from the Ajax Mine near Beltana in South Australia's Flinders Ranges with field work commencing in about 1932 and extending until World War II. This research, describing thirty new genera and ninety-nine new species, was published in the Memoirs of the Kyancutta Museum, a journal that Bedford personally established and financed in 1934. These papers are regularly referenced today in international research dealing with archaeocyaths.
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15

Haberlah, David, Martin A. J. Williams, Galen Halverson, Grant H. McTainsh, Steven M. Hill, Tomas Hrstka, Patricio Jaime, Alan R. Butcher e Peter Glasby. "Loess and floods: High-resolution multi-proxy data of Last Glacial Maximum (LGM) slackwater deposition in the Flinders Ranges, semi-arid South Australia". Quaternary Science Reviews 29, n. 19-20 (settembre 2010): 2673–93. http://dx.doi.org/10.1016/j.quascirev.2010.04.014.

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16

Gannaway Dalton, C. Evelyn, Katherine A. Giles, Mark G. Rowan, Richard P. Langford, Thomas E. Hearon e J. Carl Fiduk. "Sedimentologic, stratigraphic, and structural evolution of minibasins and a megaflap formed during passive salt diapirism: The Neoproterozoic Witchelina diapir, Willouran Ranges, South Australia". Journal of Sedimentary Research 90, n. 2 (20 febbraio 2020): 165–99. http://dx.doi.org/10.2110/jsr.2020.9.

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ABSTRACT This study documents the growth of a megaflap along the flank of a passive salt diapir as a result of the long-lived interaction between sedimentation and halokinetic deformation. Megaflaps are nearly vertical to overturned, deep minibasin stratal panels that extend multiple kilometers up steep flanks of salt diapirs or equivalent welds. Recent interest has been sparked by well penetrations of unidentified megaflaps that typically result in economic failure, but their formation is also fundamental to understanding the early history of salt basins. This study represents one of the first systematic characterizations of an exposed megaflap with regards to sub-seismic sedimentologic, stratigraphic, and structural details. The Witchelina diapir is an exposed Neoproterozoic primary passive salt diapir in the eastern Willouran Ranges of South Australia. Flanking minibasin strata of the Top Mount Sandstone, Willawalpa Formation, and Witchelina Quartzite, exposed as an oblique cross section, record the early history of passive diapirism in the Willouran Trough, including a halokinetically drape-folded megaflap. Witchelina diapir offers a unique opportunity to investigate sedimentologic responses to the initiation and evolution of passive salt movement. Using field mapping, stratigraphic sections, petrographic analyses, correlation diagrams, and a quantitative restoration, we document depositional facies, thickness trends, and stratal geometries to interpret depositional environments, sequence stratigraphy, and halokinetic evolution of the Witchelina diapir and flanking minibasins. Top Mount, Willawalpa, and Witchelina strata were deposited in barrier-bar-complex to tidal-flat environments, but temporal and spatial variations in sedimentation and stratigraphic patterns were strongly influenced from the earliest stages by the passively rising Witchelina diapir on both regional (basinwide) and local minibasin scales. The salt-margin geometry was depositionally modified by an early erosional sequence boundary that exposed the Witchelina diapir and formed a salt shoulder, above which strata that eventually became the megaflap were subsequently deposited. This shift in the diapir margin and progressive migration of the depocenter began halokinetic rotation of flanking minibasin strata into a megaflap geometry, documenting a new concept in the understanding of deposition and deformation during passive diapirism in salt basins.
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17

Gregory, Courtney. "Geothermal Energy Potential at Paralana, Northern Flinders Ranges, South Australia". Journal of the Virtual Explorer 20 (2005). http://dx.doi.org/10.3809/jvirtex.2005.00135.

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18

U. Singh. "Ooids and Cements from the Late Precambrian of the Flinders Ranges, South Australia". SEPM Journal of Sedimentary Research Vol. 57 (1987). http://dx.doi.org/10.1306/212f8ac1-2b24-11d7-8648000102c1865d.

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19

LEMON, NICHOLAS M., and ANDREW McG. "Late Proterozoic Source Rocks Associated with Diapirs in the Central Flinders Ranges, South Australia". AAPG Bulletin 76 (1992). http://dx.doi.org/10.1306/f4c8fc50-1712-11d7-8645000102c1865d.

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20

LEMON, NICHOLAS M. "Abstract: Sea Level Influence On Diapir Movement: Enorama Diapir, Flinders Ranges, South Australia ". AAPG Bulletin 83 (1999) (1999). http://dx.doi.org/10.1306/c9ebbf9b-1735-11d7-8645000102c1865d.

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21

Gehling, James G., e Bruce Runnegar. "Phyllozoon and Aulozoon: key components of a novel Ediacaran death assemblage in Bathtub Gorge, Heysen Range, South Australia". Geological Magazine, 29 luglio 2021, 1–14. http://dx.doi.org/10.1017/s0016756821000509.

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Abstract The recognition of fossiliferous horizons both below and above the classical Ediacara levels of the Flinders Ranges, South Australia, significantly expands the potential of this candidate World Heritage succession. Here we document a small window into the biology and taphonomy of the late Ediacaran seafloor within the new Nilpena Sandstone Member of the Rawnsley Quartzite in Bathtub Gorge, northern Heysen Range. A 1 m2 slab extracted from the gorge, now on permanent display at the South Australian Museum, has a death assemblage dominated by the erniettomorph Phyllozoon hanseni Jenkins and Gehling 1978 and a newly named macroscopic tubular body fossil – Aulozoon soliorum gen. et sp. nov. – on its fine sandstone bed sole. The orientations and juxtaposition of these taxa suggest overprinting of an in situ benthic Phyllozoon community by sand-filled tubes of Aulozoon carried in by a storm wave-base surge. Phyllozoon hanseni is a widespread species that is restricted to the Nilpena Sandstone Member of the Rawnsley Quartzite, whereas Dickinsonia costata ranges from the underlying Ediacara Sandstone Member into the Nilpena Sandstone Member. Fundamental differences in the ways these two vendobiont taxa are constructed and preserved may provide insights into their biology and phylogenetic affinities. In the Nilpena Sandstone Member, D. costata is joined by Dickinsonia rex Jenkins 1992, which appears to be confined to the member, and is here re-described to clarify its taxonomic status and stratigraphic distribution.
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22

N. M. Lemon (2). "Physical Modeling of Sedimentation Adjacent to Diapirs and Comparison with Late Precambrian Oratunga Breccia Body in Central Flinders Ranges, South Australia". AAPG Bulletin 69 (1985). http://dx.doi.org/10.1306/ad462c59-16f7-11d7-8645000102c1865d.

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23

Holford, Simon P., Paul F. Green, Ian R. Duddy, Richard R. Hillis, Steven M. Hill e Martyn S. Stoker. "Preservation of late Paleozoic glacial rock surfaces by burial prior to Cenozoic exhumation, Fleurieu Peninsula, Southeastern Australia". Journal of the Geological Society, 21 giugno 2021, jgs2020–250. http://dx.doi.org/10.1144/jgs2020-250.

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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.
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