Готові списки джерел за темами / Palghat- Cauvery Shear System

Добірка наукової літератури з теми "Palghat- Cauvery Shear System"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Palghat- Cauvery Shear System"

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SANTOSH, M. "Gemstone Mineralization in the Palghat-Cauvery Shear Zone System (Karur-Kangayam Belt), Southern India." Gondwana Research 6, no. 4 (October 2003): 911–18. http://dx.doi.org/10.1016/s1342-937x(05)71035-2.

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2

KOSHIMOTO, Saori, Toshiaki TSUNOGAE, and M. SANTOSH. "Sapphirine and corundum bearing ultrahigh temperature rocks from the Palghat-Cauvery Shear System, southern India." Journal of Mineralogical and Petrological Sciences 99, no. 5 (2004): 298–310. http://dx.doi.org/10.2465/jmps.99.298.

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Santosh, M., Toshiaki Tsunogae, and Saori Koshimoto. "First Report of Sapphirine-bearing Rocks from the Palghat-Cauvery Shear Zone System, Southern India." Gondwana Research 7, no. 2 (April 2004): 620–26. http://dx.doi.org/10.1016/s1342-937x(05)70813-3.

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4

Lasitha, S., D. Twinkle, P. John Kurian, and P. R. Harikrishnan. "Geophysical evidence for marine prolongation of the Palghat-Cauvery shear system into the offshore Cauvery basin, Eastern continental margin of India." Journal of Asian Earth Sciences 184 (October 2019): 103981. http://dx.doi.org/10.1016/j.jseaes.2019.103981.

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5

TSUNOGAE, Toshiaki, M. SANTOSH, and Makoto SHIMPO. "Sodicgedrite in ultrahigh-temperature Mg-Al-rich rocks from the Palghat-Cauvery Shear Zone system, southern India." Journal of Mineralogical and Petrological Sciences 102, no. 1 (2007): 39–43. http://dx.doi.org/10.2465/jmps.060824.

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6

Collins, Alan S., Chris Clark, K. Sajeev, M. Santosh, David E. Kelsey, and Martin Hand. "Passage through India: the Mozambique Ocean suture, high-pressure granulites and the Palghat-Cauvery shear zone system." Terra Nova 19, no. 2 (April 2007): 141–47. http://dx.doi.org/10.1111/j.1365-3121.2007.00729.x.

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7

NISHIMIYA, Yuki, Toshiaki TSUNOGAE, and M. SANTOSH. "Petrology and fluid inclusions of garnet-clinopyroxene rocks from Paramati in the Palghat-Cauvery Shear Zone System, southern India." Journal of Mineralogical and Petrological Sciences 103, no. 5 (2008): 354–60. http://dx.doi.org/10.2465/jmps.080617.

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8

Collins, Alan S., M. Santosh, Louise Kropinski, Martin P. Hand, Clark Chris, K. Saieev, Stacey McKenzie, and Peter D. Kinny. "The Mozambique Ocean Suture in Southern India: Age and Significance of Granulites in the Palghat-Cauvery Shear Zone System." ASEG Extended Abstracts 2006, no. 1 (December 2006): 1–3. http://dx.doi.org/10.1071/aseg2006ab027.

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9

Tsunogae, T., and M. Santosh. "Ti-free högbomite in spinel- and sapphirine-bearing Mg-Al rock from the Palghat-Cauvery shear zone system, southern India." Mineralogical Magazine 69, no. 6 (December 2005): 937–49. http://dx.doi.org/10.1180/0026461056960300.

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AbstractWe report a new type of högbomite in a spinel- and sapphirine-bearing silica-deficient Mg-Al rock from Manavadi at the northern margin of the Madurai Block along the Palghat-Cauvery shear zone system, which defines the Archaean-Proterozoic collisional boundary in southern India. Högbomite occurs here as fine- to medium-grained euhedral to subhedral crystals enclosed within or along grain boundaries of greenish spinel. It is compositionally very unique due to the lack of TiO2 (<0.2 wt.%) and enrichment in Al2O3 (66.4—70.8 wt.%) compared to other occurrences. The variety of högbomite described in this study, confirmed by laser Raman spectroscopy, has not been reported elsewhere previously. Högbomite in this study is subdivided into three groups based on the XMg (=Mg/ (FeTotal+Mg)) ratio; 0.54—0.57, 0.61—0.73 and 0.77—0.79. Compositional data suggest a linear element substitution of 3(Fe+Mg) = 2Al for the Ti-free högbomite, a trend that is distinct from previously reported Ti-bearing högbomites. Textures and mineral chemistry data suggest that the following reaction took place at retrograde stage (T <800°C): spinel + H2O + O2 → högbomite + corundum + magnetite, implying that introduction of hydrous and oxidized fluid as well as low bulk-Ti content played an important role in the formation of Ti-free högbomite.
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Clark, Chris, Alan S. Collins, M. Santosh, Richard Taylor, and Benjamin P. Wade. "The P-T-t architecture of a Gondwanan suture: REE, U–Pb and Ti-in-zircon thermometric constraints from the Palghat Cauvery shear system, South India." Precambrian Research 174, no. 1-2 (October 2009): 129–44. http://dx.doi.org/10.1016/j.precamres.2009.07.003.

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Дисертації з теми "Palghat- Cauvery Shear System"

1

Chowdhury, Priyadarshi [Verfasser], Sumit [Gutachter] Chakraborty, and Taras V. [Gutachter] Gerya. "Thermal and tectonic style of evolution of Precambrian crust : an example for Palghat-Cauvery Shear Zone, South India / Priyadarshi Chowdhury ; Gutachter: Sumit Chakraborty, Taras V. Gerya ; Fakultät für Geowissenschaften." Bochum : Ruhr-Universität Bochum, 2018. http://d-nb.info/1158499280/34.

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2

Rowe, S. E. "Mechanism of formation and age of the Ayyarmalai A-type charnockite – granite association from the south-eastern Palghat- Cauvery Shear System, southern India." Thesis, 2010. http://hdl.handle.net/2440/104030.

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The Ayyarmalai A-type charnockite and A-type alkali granite lies on the south-eastern margin of the Palghat-Cauvery Shear System and provides an example of co-magmatism that was later overprinted with granulite facies metamorphism at ~2.45-2.5Ga. The Palghat-Cauvery Shear System represents an intriguing zone with Neoproterozoic aged granulites (~800-500 Ma) to the south and Archaean granulites (~3000-2500 Ma) to the north; the origins of which are still often disputed. This study presents whole rock major and trace element compositions, mineral chemistry, pressure-temperature estimates and whole rock Sm-Nd, Rb-Sr, Pb-Pb and δ18O isotopic compositions of this A-type charnockite-granite association found at Ayyarmalai, Tamil Nadu, Southern India. The subsequent data from this study suggests that: (1) the Ayyarmalai charnockites from the Palghat-Cauvery Shear System have zircon ages that are synchronous with events in the Northern Granulite Terrain; (2) The Dharwar Craton is a strong candidate for the protolith of these rocks; (3) Evidence of a Neoproterozoic-Cambrian granulite metamorphic event (~520 Ma) appears to be absent in these rocks questioning the existence or location of a Neoproterozoic - Cambrian suture zone proposed for the Palghat-Cauvery Shear System recently. U-Pb zircon ages show zoned igneous cores ~2.65-2.68 Ga ages in both rock types defining the crystallisation age, while the large metamorphic rim overgrowths date the Archaean granulite metamorphic event at ~2.45 - 2.5 Ga. Geochemical data of the Ayyarmalai charnockites reveal a very primitive, unfractionated REE pattern with no Eu-anomaly, ferroan, high K-calc-alkaline, with moderate enrichment of LREE with respect to HREE and fall within the field of high Ba-Sr type granitoids. Extraction of Pyroxene- Hornblende rich cumulates resulted in an intermediate charnockites driving the crystallisation towards the final A-type alkali granite. The A-type alkali granites show a more fractionated REE pattern with a significant Eu-anomaly, ferroan, high-K- calc-alkaline, with enrichment of LREE and depletion in the low Ba-Sr type granitoids. εNd and Nd model ages indicate a highly evolved protolith (εNd(0) =-25.15 to -33.14) that encountered a crustal Archaean source (2.89-3.09 Ga) causing contamination as the magmas ascended. Harker diagrams, Nd data (isochron age, ~2519 Ma) and U-Pb zircon crystallisation ages suggest a co-magmatic relationship between the charnockite and alkali granite. Conventional geothermometry/barometry suggest minimum pressure-temperature conditions existed at 740 – 750°C and P=5.61 – 5.84 kbar. The data presented from this study is consistent with a magmatic origin of these charnockites favouring the early crystallisation of orthopyroxene. The correlation with the data from the Dharwar Craton suggest that the study region may have encountered Dharwar Craton on magmatic ascent causing crustal contamination
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2010
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Metz, E. A. S. "Metamorphic and geochronological constraints from a proposed continental suture in southern India." Thesis, 2010. http://hdl.handle.net/2440/103991.

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The Palghat-Cauvery Shear System (PCSS) has been proposed as a major suture in the assembly of Gondwana, delineating the site of closure of the Mozambique Ocean. Evidence of an 830 °C and 14 kbar peak metamorphic event has been identified in the Namakkal area, central PCSS. This event is associated with late Mesoproterozoic to early Neoproterozoic Sm-Nd age constraints recorded in the cores of 3000 and 5000 μm diameter garnets. Further P-T constraints, retrieved from structurally-defined younger mineral assemblages associated with partially reset Sm-Nd ages varying between 870.7±3.9 Ma and 683.3±3.0 Ma and moderately prolonged cooling periods of ~30 Myr, indicate that the central PCSS underwent a long-lived period of high-pressure amphibolite facies metamorphism, eventually heating to granulite facies, consistent with the Gondwana-forming suture hypothesis. This evidence supports the model for an early Neoproterozoic protolith metamorphosed during the Pan-African in a collision event for the Palghat-Cauvery Shear System.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2010
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