Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India
The Pranhita-Godavari Basin in central eastern India is one of the Proterozoic “Purāna” basins of cratonic India. New geochronology demonstrates that it has a vast depositional history of repeated basin reactivation from the Palaeoproterozoic to the Mesozoic. U-Pb laser ablation inductively coupled...
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ftdoajarticles:oai:doaj.org/article:2f4c43eed70f44c8b755346350d6eda9 2023-10-09T21:46:13+02:00 Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India Udeni Amarasinghe Asru Chaudhuri Alan S. Collins Gautam Deb Sarbani Patranabis-Deb 2015-05-01T00:00:00Z https://doi.org/10.1016/j.gsf.2014.03.009 https://doaj.org/article/2f4c43eed70f44c8b755346350d6eda9 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1674987114000437 https://doaj.org/toc/1674-9871 1674-9871 doi:10.1016/j.gsf.2014.03.009 https://doaj.org/article/2f4c43eed70f44c8b755346350d6eda9 Geoscience Frontiers, Vol 6, Iss 3, Pp 453-463 (2015) LA-icpms U-Pb zircon geochronology Godavari Purāna Gondwana Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.1016/j.gsf.2014.03.009 2023-09-10T00:49:42Z The Pranhita-Godavari Basin in central eastern India is one of the Proterozoic “Purāna” basins of cratonic India. New geochronology demonstrates that it has a vast depositional history of repeated basin reactivation from the Palaeoproterozoic to the Mesozoic. U-Pb laser ablation inductively coupled plasma mass spectrometry dating of detrital zircons from two samples of the Somanpalli Group—a member of the oldest sedimentary cycle in the valley—constrains its depositional age to ∼1620 Ma and demonstrates a tripartite age provenance with peaks at ∼3500 Ma, ∼2480 Ma and ∼1620 Ma, with minor age peaks in the Eoarchaean (∼3.8 Ga) and at ∼2750 Ma. These ages are consistent with palaeocurrent data suggesting a southerly source from the Krishna Province and Enderby Land in East Antarctica. The similarity in the maximum depositional age with previously published authigenic glauconite ages suggest that the origin of the Pranhita-Godvari Graben originated as a rift that formed at a high angle to the coeval evolving late Meosproterozoic Krishna Province as Enderby Land collided with the Dharwar craton of India. In contrast, detrital zircons from the Cycle III Sullavai Group red sandstones yielded a maximum depositional age of 970 ± 20 Ma and had age peaks of ∼2550 Ma, ∼1600 Ma and then a number of Mesoproterozoic detrital zircons terminating in three analyses at ∼970 Ma. The provenance of these is again consistent with a southerly source from the Eastern Ghats Orogen and Antarctica. Later cycles of deposition include the overlying Albaka/Usur Formations and finally the late Palaeozoic to Mesozoic Gondwana Supergroup. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Enderby Land Directory of Open Access Journals: DOAJ Articles East Antarctica Geoscience Frontiers 6 3 453 463 |
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English |
topic |
LA-icpms U-Pb zircon geochronology Godavari Purāna Gondwana Geology QE1-996.5 |
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LA-icpms U-Pb zircon geochronology Godavari Purāna Gondwana Geology QE1-996.5 Udeni Amarasinghe Asru Chaudhuri Alan S. Collins Gautam Deb Sarbani Patranabis-Deb Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
topic_facet |
LA-icpms U-Pb zircon geochronology Godavari Purāna Gondwana Geology QE1-996.5 |
description |
The Pranhita-Godavari Basin in central eastern India is one of the Proterozoic “Purāna” basins of cratonic India. New geochronology demonstrates that it has a vast depositional history of repeated basin reactivation from the Palaeoproterozoic to the Mesozoic. U-Pb laser ablation inductively coupled plasma mass spectrometry dating of detrital zircons from two samples of the Somanpalli Group—a member of the oldest sedimentary cycle in the valley—constrains its depositional age to ∼1620 Ma and demonstrates a tripartite age provenance with peaks at ∼3500 Ma, ∼2480 Ma and ∼1620 Ma, with minor age peaks in the Eoarchaean (∼3.8 Ga) and at ∼2750 Ma. These ages are consistent with palaeocurrent data suggesting a southerly source from the Krishna Province and Enderby Land in East Antarctica. The similarity in the maximum depositional age with previously published authigenic glauconite ages suggest that the origin of the Pranhita-Godvari Graben originated as a rift that formed at a high angle to the coeval evolving late Meosproterozoic Krishna Province as Enderby Land collided with the Dharwar craton of India. In contrast, detrital zircons from the Cycle III Sullavai Group red sandstones yielded a maximum depositional age of 970 ± 20 Ma and had age peaks of ∼2550 Ma, ∼1600 Ma and then a number of Mesoproterozoic detrital zircons terminating in three analyses at ∼970 Ma. The provenance of these is again consistent with a southerly source from the Eastern Ghats Orogen and Antarctica. Later cycles of deposition include the overlying Albaka/Usur Formations and finally the late Palaeozoic to Mesozoic Gondwana Supergroup. |
format |
Article in Journal/Newspaper |
author |
Udeni Amarasinghe Asru Chaudhuri Alan S. Collins Gautam Deb Sarbani Patranabis-Deb |
author_facet |
Udeni Amarasinghe Asru Chaudhuri Alan S. Collins Gautam Deb Sarbani Patranabis-Deb |
author_sort |
Udeni Amarasinghe |
title |
Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
title_short |
Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
title_full |
Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
title_fullStr |
Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
title_full_unstemmed |
Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India |
title_sort |
evolving provenance in the proterozoic pranhita-godavari basin, india |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://doi.org/10.1016/j.gsf.2014.03.009 https://doaj.org/article/2f4c43eed70f44c8b755346350d6eda9 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica Enderby Land |
genre_facet |
Antarc* Antarctica East Antarctica Enderby Land |
op_source |
Geoscience Frontiers, Vol 6, Iss 3, Pp 453-463 (2015) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674987114000437 https://doaj.org/toc/1674-9871 1674-9871 doi:10.1016/j.gsf.2014.03.009 https://doaj.org/article/2f4c43eed70f44c8b755346350d6eda9 |
op_doi |
https://doi.org/10.1016/j.gsf.2014.03.009 |
container_title |
Geoscience Frontiers |
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6 |
container_issue |
3 |
container_start_page |
453 |
op_container_end_page |
463 |
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1779321856498597888 |