Organic carbon isotope records of the Paleocene- Eocene thermal maximum event in India provide new insights into mammal origination and migration

TitleOrganic carbon isotope records of the Paleocene- Eocene thermal maximum event in India provide new insights into mammal origination and migration
Publication TypeJournal Article
Year of Publication2021
AuthorsKhozyem, H, Adatte, T, Keller, G, Spangenberg, JE
JournalJournal of Asian Earth Sciences
Volume212
Pagination104736
ISSN1367-9120
KeywordsETM2, India, Lignite, Mammal, PETM, δC
Abstract

Early Eocene rift basins sediments in western and northwestern India contain deposits including lignite. These rift basins were formed during the early stage of the India - Eurasia collision. The Sedimentary successions in the studied five lignite mines are stratigraphically similar. In these successions, there are two thick lignite units, called the lower and upper lignite units, separated by early Eocene marine transgression deposits. Two organic carbon isotopes excursions are present, based on biostratigraphic age control, the lower carbon isotope excursion is linked to the Paleocene Eocene Thermal Maximum (PETM) and an upper one represents the Eocene Thermal Maximum-2 (ETM2). The correlation of obtained results to the global isotopic records from both marine and terrestrial environments indicates that mammal bearing intervals from India’s lignite mines were deposited in the late early Eocene, and that lends support to the hypothesis of mammal migration into India.

URLhttps://www.sciencedirect.com/science/article/pii/S1367912021000742
DOI10.1016/j.jseaes.2021.104736