Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India
The Palni hills form part of the granulite facies terrain of the south Indian shield which contains a variety of rock types.The Mg-Al granulites of the Palni hill display evidence of metamorphic reactions involved in the formation of diverse mineral assemblages documented in different types of react...
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Geological Institute, Yokohama National University/Geological Institute, Yokohama National University
2003
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ftnipr:oai:nipr.repo.nii.ac.jp:00003127 2023-05-15T13:49:00+02:00 Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India Prakash,Divya Arima,Makoto 2003-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3127 http://id.nii.ac.jp/1291/00003127/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3127&item_no=1&attribute_id=18&file_no=1 en eng Geological Institute, Yokohama National University/Geological Institute, Yokohama National University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3127 http://id.nii.ac.jp/1291/00003127/ AA1130866X Polar geoscience, 16, 149-175(2003-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3127&item_no=1&attribute_id=18&file_no=1 Mg-Al granulites,reaction textures,decompression,South India Departmental Bulletin Paper P(論文) 2003 ftnipr 2022-12-03T19:43:04Z The Palni hills form part of the granulite facies terrain of the south Indian shield which contains a variety of rock types.The Mg-Al granulites of the Palni hill display evidence of metamorphic reactions involved in the formation of diverse mineral assemblages documented in different types of reaction textures,coronas and symplectites.Petrographic studies show evidence for melting and decompression reactions that are preserved in individual samples.The UHT assemblage includes some of Opx,Crd,Sil,Grt,Kfs,Qtz,Spr and Bt which coexisted with melt in equilibrium at the thermal peak.In a later stage,the majority of the reactions involve cordierite formation at the expense of partial or complete breakdown of garnet.A possible correlation of similar post-peak decompression textures in the high-grade granulites in the continental fragments of southern India,Sri Lanka,Madagascar and East Antarctica support the probability that they share similar lithologies and thus form an integral part of a megacontinent. Report Antarc* Antarctica East Antarctica Polar geoscience National Institute of Polar Research Repository, Japan East Antarctica Indian |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Mg-Al granulites,reaction textures,decompression,South India |
spellingShingle |
Mg-Al granulites,reaction textures,decompression,South India Prakash,Divya Arima,Makoto Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
topic_facet |
Mg-Al granulites,reaction textures,decompression,South India |
description |
The Palni hills form part of the granulite facies terrain of the south Indian shield which contains a variety of rock types.The Mg-Al granulites of the Palni hill display evidence of metamorphic reactions involved in the formation of diverse mineral assemblages documented in different types of reaction textures,coronas and symplectites.Petrographic studies show evidence for melting and decompression reactions that are preserved in individual samples.The UHT assemblage includes some of Opx,Crd,Sil,Grt,Kfs,Qtz,Spr and Bt which coexisted with melt in equilibrium at the thermal peak.In a later stage,the majority of the reactions involve cordierite formation at the expense of partial or complete breakdown of garnet.A possible correlation of similar post-peak decompression textures in the high-grade granulites in the continental fragments of southern India,Sri Lanka,Madagascar and East Antarctica support the probability that they share similar lithologies and thus form an integral part of a megacontinent. |
format |
Report |
author |
Prakash,Divya Arima,Makoto |
author_facet |
Prakash,Divya Arima,Makoto |
author_sort |
Prakash,Divya |
title |
Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
title_short |
Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
title_full |
Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
title_fullStr |
Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
title_full_unstemmed |
Hith-temperature dehydration melting and decompressive textures in Mg-Al granulites from the Palni hills, South India |
title_sort |
hith-temperature dehydration melting and decompressive textures in mg-al granulites from the palni hills, south india |
publisher |
Geological Institute, Yokohama National University/Geological Institute, Yokohama National University |
publishDate |
2003 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3127 http://id.nii.ac.jp/1291/00003127/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3127&item_no=1&attribute_id=18&file_no=1 |
geographic |
East Antarctica Indian |
geographic_facet |
East Antarctica Indian |
genre |
Antarc* Antarctica East Antarctica Polar geoscience |
genre_facet |
Antarc* Antarctica East Antarctica Polar geoscience |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3127 http://id.nii.ac.jp/1291/00003127/ AA1130866X Polar geoscience, 16, 149-175(2003-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3127&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250364555755520 |