Does the deposition of varied shale lithofacies in the Subathu shale of Parwanoo area (H.P) represent an occurrence of an oceanic anoxic events?

Oceanic Anoxic Events (OAEs) are the past historical phenomena that was due to the change in the in global climatic pattern for a short interval of time. The widespread of marine matter-rich sediments and a significant disruption in the global carbon cycle characterize this. A comprehensive study of...

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Hauptverfasser: Singh, Bhart, Singh, Seema, Singh, Deepak, Bhan, Uday, Ranganathan, Arunkumar, Pandey, Gaurav, Goswami, Lalit, Singh, Yashvir
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:Oceanic Anoxic Events (OAEs) are the past historical phenomena that was due to the change in the in global climatic pattern for a short interval of time. The widespread of marine matter-rich sediments and a significant disruption in the global carbon cycle characterize this. A comprehensive study of anoxic events has been done in the regional to global context. But this is limited when comes to Indian arena especially in Himalayan foreland basin sediments. There are variety of evidences shown by researchers for the occurrence of OAEs on the basis of various tools like colour, Geochemical, maturation of organic content, and deposition of shale. In this paper we are showing the Subathu has occurrence of black, gray, olive-green shale. Which is indicator of anoxic events along with other geochemical proxies. This deposition of Paleocene – Eocene time is associated with Indian Eurasian collision and thermal maxima. Some good sections of shale exposure and their total organic content lies between 0.8 to 2.4% which is very much similar in other well-defined sides of anoxic events. to support this, we also use XRF data and use the proxies of The Ni/Co ratio (av. 5.5) and V/(V+Ni) ratio (av. 5.0) confirms to sub-oxic to anoxic depositional settings.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0115942