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A common parentage for Deccan Continental Flood Basalt and Central Indian Ocean Ridge Basalt? A geochemical and isotopic approach

Ray, D.; Misra, S.; Widdowson, M.; Langmuir, C. H.

Authors

D. Ray

S. Misra

C. H. Langmuir



Abstract

A comparison of geochemical and Sr-Nd-Pb isotopic compositions for Deccan Continental Flood Basalts (CFBs) and Central Indian Ridge (CIR) Basalts is presented: these data permit assessment of possible parental linkages between the two regions, and comparison of their respective magmatic evolutionary trends in relation to rift-related tectonic events during Gondwana break-up. The present study reveals that Mid-Ocean Ridge Basalt (MORB) from the northern CIR and basalts of Deccan CFB are geochemically dissimilar because of: (1) the Deccan CFB basalts typically show a greater iron-enrichment as compared to the northern CIR MORB, (2) a multi-element spiderdiagram reveals that the Deccan CFBs reveal a more fractionated slope (Ba/Yb N >1), as compared to relatively flat northern CIR MORB (Ba/Yb N

Citation

Ray, D., Misra, S., Widdowson, M., & Langmuir, C. H. (2014). A common parentage for Deccan Continental Flood Basalt and Central Indian Ocean Ridge Basalt? A geochemical and isotopic approach. Journal of Asian Earth Sciences, 84, 188-200. https://doi.org/10.1016/j.jseaes.2013.12.015

Journal Article Type Article
Acceptance Date Dec 15, 2013
Online Publication Date Dec 20, 2013
Publication Date Apr 15, 2014
Deposit Date May 29, 2022
Journal Journal of Asian Earth Sciences
Print ISSN 1367-9120
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 84
Pages 188-200
DOI https://doi.org/10.1016/j.jseaes.2013.12.015
Public URL https://hull-repository.worktribe.com/output/2747124