Academic literature on the topic 'Southern Arunta region'
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Journal articles on the topic "Southern Arunta region"
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SCRIMGEOUR, I., P. KINNY, D. CLOSE, and C. EDGOOSE. "High- granulites and polymetamorphism in the southern Arunta Region, central Australia: Evidence for a 1.64Ga accretional event." Precambrian Research 142, no. 1-2 (November 30, 2005): 1–27. http://dx.doi.org/10.1016/j.precamres.2005.08.005.
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Carr, Lidena, Russell Korsch, Wolfgang Preiss, Sandra Menpes, Josef Holzschuh, and Ross Costelloe. "Structural and stratigraphic architecture of Australia's frontier onshore sedimentary basins: the Arckaringa, Officer, Amadeus, and Georgina basins." APPEA Journal 51, no. 2 (2011): 703. http://dx.doi.org/10.1071/aj10083.
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The Onshore Energy Security Program—funded by the Australian Government and conducted by Geoscience Australia—has acquired deep seismic reflection data in conjunction with state and territory geological surveys, across several frontier sedimentary basins to stimulate petroleum exploration in onshore Australia. Here, we present data from two seismic lines collected in SA and NT. Seismic line 08GA-OM1 crossed the Arckaringa and Officer basins in SA and the southern-most Amadeus Basin in NT. Seismic line 09GA-GA1 crossed the northeastern part of the Amadeus Basin and the complete width of the southern Georgina Basin in NT. Structural and sequence stratigraphic interpretations of the seismic lines will be presented here, followed by an assessment of the petroleum potential of the basins. Seismic line 08GA-OM1 also crosses the Neoproterozoic to Devonian eastern Officer Basin. The basin is structurally complex in this area, being dominated by south-directed thrust faults and fault-related folds—providing potential for underthrust petroleum plays. The northern margin of the basin is overthrust to the south by the Mesoproterozoic Musgrave Province. To the north, the Moorilyanna Trough of the Officer Basin is a major depocentre of up to 7,000 m deep. Both seismic lines cross parts of the eastern Amadeus Basin. Seismic line 08GA-OM1 shows that the southern margin of the basin is overthrust to the north by the Musgrave Province with the main movement during the Petermann Orogeny. In the northeast, seismic line 09GA-GA1 crosses two parts of the basin separated by the Paleoproteroozic to Mesoproterozoic Casey Inlier (part of the Arunta Region). The northern margin of the basin is imaged seismically as a southward-verging, thinned-skinned thrust belt, showing considerable structural thickening of the stratigraphic succession. Seismic line 09GA-GA1 was positioned to cross that part of the southern Georgina Basin that was considered previously to be in the oil window. Here, the basin has a complex southern margin, with Neoproterozoic stratigraphy being thrust interleaved with basement rocks of the Arunta Region. The main part of the basin, containing a Neoproterozoic to Devonian succession, is asymmetric, thinning to the north where it overlies the Paleoproterozoic Davenport Province. The well, Phillip–2, drilled adjacent to the seismic line, intersected basement at a depth of 1,489 m, and has been used to map the stratigraphic sequences across the basin.
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KATAPA, R. S., and D. K. RWEYEMAMU. "HIV/AIDS KNOWLEDGE, ATTITUDE AND PRACTICE AMONG WOMEN IN THE LEAST AND MOST HIV/AIDS AFFECTED REGIONS OF MAINLAND TANZANIA." Journal of Biosocial Science 46, no. 2 (September 12, 2013): 168–77. http://dx.doi.org/10.1017/s0021932013000497.
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SummaryAmong women in mainland Tanzania, Iringa region in the southern highlands has the highest HIV/AIDS prevalence rate while Arusha region in the north-east has the lowest prevalence rate. In a 2007/8 survey, Iringa's HIV rate for women was 18.6% versus 0.8% in Arusha. Using data from a survey of women aged 15–49 years conducted in 2009 by the Champion project of EngenderHealth, a comparison was made of HIV/AIDS knowledge, attitude and practice between women in Iringa and Arusha regions. It was found that women in Arusha region had more knowledge of HIV/AIDS than women in Iringa region, and that more than three-quarters of the women in each region were married and 12% of the women in Arusha region had never been married compared with 8% of the women in Iringa region. The majority of women in each region had at least primary school education and there was no significant difference between their educational levels. Women in Arusha region were economically less active than women in Iringa region, a statistically significant association. More women in Arusha region than in Iringa region had never had children (24% versus 12%). Similarly, women in Arusha region had significantly fewer children compared with women in Iringa.
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Milani, Marzo, Toscano, Consoli, Cirelli, Ventura, and Barbagallo. "Evapotranspiration from Horizontal Subsurface Flow Constructed Wetlands Planted with Different Perennial Plant Species." Water 11, no. 10 (October 17, 2019): 2159. http://dx.doi.org/10.3390/w11102159.
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This paper presents the results of an experiment carried out in Southern Italy (Sicily) on the estimation evapotranspiration (ET) in pilot constructed wetlands planted with different species (Chrysopogon zizanioides, Myscanthus x giganteus, Arundo donax, Phragmites australis, and Cyperus papyrus). In the two monitored growing seasons, reference ET0 was calculated with the Penman-Monteith formula, while actual ET and crop coefficients were measured through a water balance and the FAO 56 approach, respectively. The highest average seasonal ET value was observed in Phragmites australis (17.31 mm d−1) followed by Arundo donax (11.23 mm day−1) Chrysopogon zizanioides (8.56 mm day−1), Cyperus papyrus (7.86 mm day−1), and Myscanthus x giganteus (7.35 mm day−1). For all plants, crop coefficient values showed different patterns in relation to growth stages and were strongly correlated with phenological parameters. Myscanthus x giganteus and Arundo donax showed a water use efficiency values significantly higher than those observed for the other tested species. Results of this study may contribute to select appropriate plant species for constructed wetlands located in semi-arid regions, especially when the use of reclaimed water and/or the use of aboveground biomass are planned.
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Mbwambo, Suzana G., Sixbert K. Mourice, and Akwilin J. P. Tarimo. "The Impacts of Current Climate Variability on Coffee Production in the Northern and Southern Highlands of Tanzania." Journal of Agricultural Science 14, no. 3 (February 15, 2022): 78. http://dx.doi.org/10.5539/jas.v14n3p78.
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Coffee is the most traded commodity in the world. In Tanzania, Coffee is the second largest traditional commodity. However, several climate change studies have predicted that coffee production will be reduced as a result of climate change. Therefore, the study aimed to assess the impact of current climate change on Tanzania’s Arabica coffee production and determine the most significant climatic variables, which influence coffee production in the respective regions. Global interpolated climatic database (Worldclim dataset) and official historical coffee production data from Tanzania Coffee Board for a period of 40 years (1970-2018) were used. Climatic parameters and coffee production were compared through descriptive statistics, correlation analysis, and multiple regressions. The Mann-Kendall method was used to detect significant trends in climatic data. The minimum temperature has been increasing at a higher rate than the maximum temperature in the Northern and Southern Highlands zones. A 1 °C increase in minimum temperature (Tmin) during short rains and annual mean temperature (Tmean) resulted in a significant coffee production decrease (-6,041 and -4,450 tons) in Kilimanjaro and Arusha regions respectively. In the Southern Highlands zone coffee production positively correlated with temperature. A significant reduction in coffee production due to a decline in long rains was also observed in the Kilimanjaro region. The warming and drought trends are likely to continue with significant implications on coffee production and this, calls for the development of suitable adaptation strategies to sustain production. Such strategies may include, re-adapting the coffee agronomic practices to climate change, improving water and nutrient use efficiency in coffee trees, and developing genetically improved coffee cultivars that will tolerate the impact of climate change.
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Hale, I. L., I. Mamuya, and D. Singh. "Sr31-Virulent Races (TTKSK, TTKST, and TTTSK) of the Wheat Stem Rust Pathogen Puccinia graminis f. sp. tritici are Present in Tanzania." Plant Disease 97, no. 4 (April 2013): 557. http://dx.doi.org/10.1094/pdis-06-12-0604-pdn.
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Since the first detection of race TTKSK (syn. Ug99) in Uganda in 1999 (2), the migration and evolution of Sr31-virulent races of Puccinia graminis f. sp. tritici [Pgt] have been closely monitored, particularly in Kenya and countries north, along the likely trajectory of migration to major wheat-producing regions of Asia. More recently, surveillance efforts have been undertaken to the south as well, and Ug99-related races have been detected in South Africa and Zimbabwe (3,4). Here we report for the first time results of a survey conducted in Tanzania. Systematic race surveillance provides data not only on the current distribution of the Ug99 race group, but also on the possible points of origin as well as the pace and probable paths of dispersal of future races from the region. In this context, the presence or absence of the Ug99 group of wheat stem rust races in adjacent countries like Tanzania assumes regional, and possibly global, relevance. A preliminary survey conducted in September 2006 indicated the presence of Sr31-virulent races of Pgt outside Slahhamo Village (3°15′S, 35°48′E) in the Ngorongoro highlands of northern Tanzania, based on compatible reactions with cv. K-Mamba (a.k.a. Mwamba), a cultivar whose pedigree indicates the presence of Sr31. A broader survey was conducted in August 2009, during which infected tissue was collected from currently-grown cultivars in research plots and on large estates, as well as from the mixes of older cultivars common on smallholder farms. In all, Pgt-infected samples were collected from one site in the Arusha region [Monduli (3°16′ S, 36°24′E)], three sites in the Ngorongoro highlands [Karatu (3°20′ S, 35°40′ E), Upper Kitete (3°14′ S, 35°53′ E), and Slahhamo], one site in the Manyara region [Hanang (4°43′ S, 35°40′ E)], and one site in the Mbeya region [southern highlands (8°87′ S, 33°40′ E)], thereby giving representation to all four major wheat growing areas in the country. Sample storage, inoculation, incubation, disease assessment, and derivation of single-pustule cultures were all performed according to the methods described by Jin et al. (1). In addition to the 20 differentials in the expanded Pgt differential set of North America, we included two supplemental tester lines: Siouxland (Sr24 + Sr31) and Sisson (Sr31 + Sr36). Each single-pustule-derived isolate was evaluated for virulence on the differential and supplemental lines at least twice. A total of 39 single-pustule isolates were derived from the six collection sites. All 39 isolates were identified as belonging to the Ug99 race group, with six identified as TTKSK (all four regions), 30 identified as TTKST (Sr31 + Sr24 virulence; Arusha region and the Ngorongoro highlands), and three identified as TTTSK (Sr31 + Sr36 virulence; Manyara region and the Ngorongoro highlands). The results of this study suggest that, to more precisely locate the “hot spots” and thereby gain a better understanding of the mechanisms of novel race emergence in East Africa, it would be prudent to include Tanzania, heretofore a blank area on the wheat rust surveillance map, in future systematic race monitoring efforts. References: (1) Y. Jin et al. Plant Dis. 92:923, 2008. (2) Z. A. Pretorius et al. Plant Dis. 84:203, 2000. (3) Z. A. Pretorius et al. Plant Dis. 94:784, 2010. (4) Z. A. Pretorius et al. Plant Dis. 96:590, 2012.
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Haworth, Matthew, Giovanni Marino, Ezio Riggi, Giovanni Avola, Cecilia Brunetti, Danilo Scordia, Giorgio Testa, et al. "The effect of summer drought on the yield of Arundo donax is reduced by the retention of photosynthetic capacity and leaf growth later in the growing season." Annals of Botany 124, no. 4 (December 19, 2018): 567–79. http://dx.doi.org/10.1093/aob/mcy223.
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Abstract Background and Aims The development of Arundo donax as a biomass crop for use on drought-prone marginal lands in areas with warm to hot climates is constrained by the lack of variation within this species. We investigated the effect of morphological and physiological variation on growth and tolerance to drought under field conditions in three ecotypes of A. donax collected from habitats representing a climate gradient: a pre-desert in Morocco, a semi-arid Mediterranean climate in southern Italy and a warm sub-humid region of central Italy. Methods The three A. donax ecotypes were grown under irrigated and rain-fed conditions in a common garden field trial in a region with a semi-arid Mediterranean climate. Physiological and morphological characteristics, and carbohydrate metabolism of the ecotypes were recorded to establish which traits were associated with yield and/or drought tolerance. Key Results Variation was observed between the A. donax ecotypes. The ecotype from the most arid habitat produced the highest biomass yield. Stem height and the retention of photosynthetic capacity later in the year were key traits associated with differences in biomass yield. The downregulation of photosynthetic capacity was not associated with changes in foliar concentrations of sugars or starch. Rain-fed plants maintained photosynthesis and growth later in the year compared with irrigated plants that began to senescence earlier, thus minimizing the difference in yield. Effective stomatal control prevented excessive water loss, and the emission of isoprene stabilized photosynthetic membranes under drought and heat stress in A. donax plants grown under rain-fed conditions without supplementary irrigation. Conclusions Arundo donax is well adapted to cultivation in drought-prone areas with warm to hot climates. None of the A. donax ecotypes exhibited all of the desired traits consistent with an ‘ideotype’. Breeding or genetic (identification of quantitative trait loci) improvement of A. donax should select ecotypes on the basis of stem morphology and the retention of photosynthetic capacity.
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Rachmat, Beben, Ediar Usman, and Dida Kusnida. "POTENSI ARUS LAUT DAN KONVERSI DAYA LISTRIK SEBAGAI ENERGI BARU TERBARUKAN DI PERAIRAN PALALAWAN DAN INDRAGIRI HILIR, PROVINSI RIAU." JURNAL GEOLOGI KELAUTAN 10, no. 2 (February 16, 2016): 69. http://dx.doi.org/10.32693/jgk.10.2.2012.217.
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Kecepatan arus pada saat kondisi air surut di bagian utara daerah penelitian berkisar antara 1 – 1,5 m/s dan di selatan berkisar antara 0,1 – 0,5 m/s dengan arah menuju tenggara - selatan. Pada saat kondisi air pasang pada kedua daerah tersebut (bagian utara dan selatan) kecepatan arus berkisar antara 0,5 – 1,2 m/s dengan arah menuju barat daya - utara.
Secara umum kecepatan arus dari utara ke selatan semakin berkurang kecepatannya, hal ini bisa dilihat dari perbedaan kecepatan arus di bagian utara dan selatan daerah penelitian pada kondisi air laut surut. Kondisi tersebut disebabkan oleh perbedaan morfologi bawah laut pada ke dua daerah tersebut. Di bagian utara, lebar lembah relatif lebih sempit (daerah selat) dengan morfologi membentuk alur bawah laut. Di bagian selatan merupakan daerah perairan terbuka, menyebabkan aliran air laut dan arus terdistribusi pada daerah yang lebih luas dan kecepatan arusnya makin berkurang.
Potensi daya listrik untuk Turbin Kobold saat surut mencapai 60 – 65 kW, dan 20 kW saat pasang selama 13 jam, sedangkan saat neap tide maksimum mencapai 8 kW saat surut dan 4 kW saat pasang dengan waktu efektif selama 11 jam. Potensi daya listrik untuk Turbin Marine Current saat surut mencapai 3 – 3,2 kW dan 1 kW saat pasang dengan masa kerja selama 13 jam dalam sehari semalam, sedangkan saat neap tide maksimum mencapai 0,4 kW saat surut dan 0.2 kW saat pasang dengan waktu efektif selama 10 jam. Jenis turbin ini cukup optimal dan dapat bekerja dengan baik untuk menghasilkan listrik dengan potensi arus yang ada di perairan Pelalawan – Indragiri Hilir.
Kata kunci: kecepatan arus, energi, potensi daya listrik, turbin
Current speed during the low waters level in the northern part of survey area range between 1 to 1.5 m/s with southeast and south direction. During the high waters level (HWL) in the both areas range from 0.1 – 0.5 m/s with southwest and north direction.
Generally, the current speed from the north to the south in the survey area is decrease, it can be seen from difference value of current speed at the northern and the southern of the survey area during the low waters level (LWS) condition. These condition caused by the difference of under sea morphology at bothside of areas. At the northern part of survey area, the wide of valley morphology is smaller (straits region) forming the submarine channel. At the southern part in an opening waters region, causing the sea current distributed in regions and the speed more decreasing.
Electrical potency for Kobold Turbine during ebb tide reach 60 - 65 kW, and 20 kW during the flood as long as 13 hours, while during maximum neap tide reach 8 kW during the ebb and 4 kW during the flood with effective time as long as 11 hours. Electrical Potential for Marine Current Turbine during ebb reach 3 – 3.2 kW, and 1 kW during the flood as long as 13 hours, while during maximum neap tide reach 0.4 kW during the ebb and 0.2 kW during the flood with effective time as long as 10 hours. This kind of the turbine is optimum enough and can work well to produce the electricity with existing current potential in waters of Pelalawan – Indragiri Hilir.
Keywords: current speed, energy, electrical potency, turbine
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Cappelli, Giovanni Alessandro, Fabrizio Ginaldi, Davide Fanchini, Sebastiano Andrea Corinzia, Salvatore Luciano Cosentino, and Enrico Ceotto. "Model-Based Assessment of Giant Reed (Arundo donax L.) Energy Yield in the Form of Diverse Biofuels in Marginal Areas of Italy." Land 10, no. 6 (May 21, 2021): 548. http://dx.doi.org/10.3390/land10060548.
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Giant reed is a promising perennial grass providing ligno-cellulosic biomass suitable to be cultivated in marginal lands (MLs) and converted into several forms of renewable energy. This study investigates how much energy, in the form of biomethane, bioethanol, and combustible solid, can be obtained by the cultivation of this species in marginal land of two Italian regions, via the spatially explicit application of the Arungro crop model. Arungro was calibrated in both rainfed/well-irrigated systems, under non-limiting conditions for nutrient availability. The model was then linked to a georeferenced database, with data on (i) current/future climate, (ii) agro-management, (iii) soil physics/hydrology, (iv) land marginality, and (v) crop suitability to environment. Simulations were run at 500 × 500 m spatial resolution in MLs of Catania (CT, Southern Italy) and Bologna (BO, Northern Italy) provinces, characterized by contrasting pedo-climates. At field scale, Arungro explained 85% of the year-to-year variability of measured carbon accumulation in aerial biomass. At the provincial level, simulated energy yields progressively increased from bioethanol, to biomethane, and finally to combustible solid, with average values of 92-115-264 GJ ha−1 in BO and 105-133-304 GJ ha−1 in CT. Mean energy yields estimated for 2030 remained unchanged compared to the baseline, although showing large heterogeneity across the study area (changes between −6/+15% in BO and −16/+15% in CT). This study provides site-specific indications on giant reed current productions, energy yields, and natural water consumption, as well as on their future trends and stability, ready-to-use for multiple stakeholders of the agricultural sector involved in bioenergy planning.
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Jeffrey V. Wells, Elly Albers, Michiel Oversteegen, Sven Oversteegen, Henriette de Vries, and Rob Wellens. "Status of the Red-billed Tropicbird (Phaethon aethereus) on and around the islands of Aruba, Curaçao, and Bonaire." Journal of Caribbean Ornithology 35 (November 4, 2022): 83–88. http://dx.doi.org/10.55431/jco.2022.35.83-88.
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Abstract Red-billed Tropicbirds have historically been considered rare visitors to the waters around the islands of Aruba, Curaçao, and Bonaire in the southern Caribbean. However, in recent years there has been an increase in documented records. We summarize all known Red-billed Tropicbird records for the region and review broader regional population and movement data to place this increase in records in context. We recommend continued careful documentation of Red-billed Tropicbird records on and around the islands of Aruba, Curaçao, and Bonaire and the implementation of a standardized monitoring program across the Caribbean range for the species to better understand the species' population status, trends, and breeding and at-sea distribution.
Keywords Aruba, Bonaire, Curaçao, Dutch Caribbean, Phaethon aethereus, Red-billed Tropicbird
Resumen Estado de Phaethon aethereus en las islas de Aruba, Curazao y Bonaire y sus alrededores • Históricamente, Phaethon aethereus ha sido considerada como una visitante rara en las aguas que rodean las islas de Aruba, Curazao y Bonaire, en el sur del Caribe; sin embargo, en los últimos años ha habido un aumento en el número de observaciones documentadas. Resumimos todos los registros conocidos de esta especie para la región e hicimos una revisión de los datos poblacionales regionales más amplios y de los de movimiento, para así ubicar en contexto dicho incremento. Recomendamos continuar con la documentación minuciosa de los registros de presencia de P. aethereus en las islas de Aruba, Curazao y Bonaire, así como de sus alrededores, e implementar un programa de monitoreo estandarizado en toda el área de distribución de la especie en el Caribe, con el fin de comprender mejor el estado y las tendencias poblacionales, su reproducción y distribución en el mar.
Palabras clave Aruba, Bonaire, Caribe neerlandés, Curazao, Phaethon aethereus
Résumé Statut du Phaéton à bec rouge (Phaethon aethereus) sur les îles d’Aruba, de Curaçao, et de Bonaire, ainsi qu’aux alentours • Le Phaéton à bec rouge a toujours été considéré comme un visiteur rare autour des îles d’Aruba, de Curaçao et de Bonaire dans le sud de la Caraïbe. Cependant, ces dernières années, le nombre d’observations documentées a augmenté. Nous faisons la synthèse de toutes les mentions connues de Phaéton à bec rouge dans la région et examinons des données régionales plus larges sur la population et les déplacements afin de replacer cette augmentation dans son contexte. Nous recommandons la poursuite d’une documentation minutieuse des mentions de Phaéton à bec rouge sur les îles d’Aruba, de Curaçao et de Bonaire, ainsi qu’aux alentours, et la mise en œuvre d’un programme de suivi normalisé dans l’ensemble de l’aire de répartition de l’espèce dans la Caraïbe, afin de mieux comprendre l’état et les tendances de sa population, ainsi que sa reproduction et sa répartition en mer.
Mots clés Aruba, Bonaire, Caraïbes néerlandaises, Curaçao, Phaethon aethereus, Phaéton à bec rouge
Dissertations / Theses on the topic "Southern Arunta region"
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Wong, Y. H. "Detrital constraints on the southern Amadeus Basin –new analysis of zircon and apatite samples for detrital provenance and thermal evolution." Thesis, 2018. https://hdl.handle.net/2440/133693.
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This item is only available electronically.The Amadeus Basin is a Late Proterozoic to early Phanerozoic basin in central Australia, which records a complex sedimentation and thermal history throughout the basin. This study presents new analysis of zircon and apatite samples for detrital provenance and thermal evolution, focused in the southern Amadeus Basin (KULGERA). While the thermal history and provenance are well constrained for the north, such data for the southern region of the basin are lacking. Nineteen outcrop samples are analysed for detrital zircon U-Pb and provenance and one BR05DD01 drill-core sample is analysed for the AUPb and AFT ages. All sampled zircons share a similar prominent peak at ca. 1086 – 1163 Ma and a second prominent peak at ca. 1554 – 1791 Ma. However, all formations do not share a similar provenance due to the major tectonic events from the Musgrave Province and Arunta Region influencing sedimentation and architecture in the Amadeus Basin. Two age peaks derived in the AFT plot at114 +/- 11 Ma and 223 +/- 13 Ma suggest an extensive thermal history in the apatite partial annealing zone. Due to the insufficient number of analysed apatite grains, this hinders the identification of age populations and more detailed age calculations. More data would be required for the apatite analysis in order to conclude a specified age population and age calculation.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, YEAR
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Lawson-Wyatt, M. A. "Regional Inkamulla-aged (ca. 1740–1755 Ma) tectonism along strike of the Mt Hay-Redbank Hill region, southern Aileron Province, central Australia." Thesis, 2012. http://hdl.handle.net/2440/92908.
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This item is only available electronically.LA-ICP-MS U-Pb monazite and zircon geochronology from granulite facies metapelites and granites indicate Inkamulla-aged metamorphism has occurred in the southern Aileron province, immediately east of the Mt Hay and Mt Chapple massifs. Gneissic metasediments and a granitic gneiss from an EW-striking structural belt in the southern Aileron Province yield ages reflective of the Inkamulla Igneous Event (1754-1741 Ma) and the Chewings Event (1593-1545 Ma), along with magmatic ages of 1627 and 1641 Ma. The Chewings age is interpreted to represent structural reworking associated with discrete shear zones along the northern margin of the EW belt. Magmatic ages of ca. 1640 Ma typically associated with Warumpi Province magmatism and deformation are found within the study area, which weakens the argument that the Warumpi terrane is exotic from the Aileron Province. The metamorphic conditions of 780-920°C and 5-10 kbars indicate an elevated geothermal gradient.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2012
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Fields, C. E. "Liebig-aged (c. 1640 Ma) magmatism and metamorphism in c. 1760 Ma crust in the Warumpi and southern Aileron Province, central Australia: a case for revising the tectonic framework of Proterozoic Australia." Thesis, 2012. http://hdl.handle.net/2440/92217.
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This item is only available electronically.The southern margin of the North Australian Craton (NAC) has been suggested to represent a long-lived (c. 1860 to 1600 Ma) active margin that preserves a cryptic record of the growth and assembly of the Australian continent. The Warumpi Province is juxtaposed against the southern Aileron Province, and has been interpreted as exotic to the NAC, though the timing of collision between the Warumpi Province and the southern Aileron Province is contentious. U-Pb zircon and monazite LA-ICP-MS geochronology from granulite facies metapelites and granitic gneisses along the southern margin of the Aileron Province and northern margin of the Warumpi Province, has shown it is characterised by c. 1780-1740 Ma magmatic rocks and c. 1640-1615 Ma magmatic and metamorphic rocks. The evidence for these events is preserved in kilometre-scale migmatitic boudins and low-strain zones enveloped by pervasive E-W trending higher strain belts. The overprinting high strain fabrics are Grenvillian age and constrained to c. 1175-1070 Ma. Phase equilibria modelling on a garnet-sillimanite-cordierite metapelite dated at c.1616 Ma, from a low-strain domain within the southern Aileron Province, indicates that peak metamorphic conditions were ~7-8 kbar and between 740-900 °C, and were associated with a down-pressure or decompressional P-T history. A metamorphic monazite age of c.1620 Ma was also preserved in a granitic gneiss located in an older, low-strain domain. The presence of the c. 1760 Ma and c. 1640 Ma timelines in both the Warumpi and Aileron Provinces calls into question the proposed exotic nature of the Warumpi Province. A speculative interpretation is that the Liebig-aged metamorphism and magmatism, seemingly associated with relatively shallow orientated, low strain fabrics, represents a period of extension rather than collision.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2012
Books on the topic "Southern Arunta region"
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Commonwealth, Regional Health Community for East Central and Southern Africa. Handbook of the activities of the Commonwealth Regional Health Community for East, Central, and Southern Africa, Arusha. Arusha, Tanzania: The Community, 1987.
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