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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sajan sarthak Best Answer
1.Paleocene-Eocene Thermal Maximum (PETM), also called Initial Eocene Thermal Maximum (IETM), a short interval of maximum temperature lasting approximately 100,000 years during the late Paleocene and early Eocene epochs (roughly 55 million years ago). The interval was characterized by the highest global temperatures of the Cenozoic Era (65 million years ago to the present). 2 ..theories suggest that PETM with the sudden release of methane hydrates from ocean sediments .