Calcium carbonate contents and carbon and oxygen isotope compositions of bulk carbonate, ODP Leg 165 sediments

Two recently drilled Caribbean sites contain expanded sedimentary records of the late Paleocene thermal maximum, a dramatic global warming event that occurred at ca. 55 Ma. The records document significant environmental changes, including deep-water oxygen deficiency and a mass extinction of deep-sea fauna, intertwined with evidence for a major episode of explosive volcanism. We postulate that this volcanism initiated a reordering of ocean circulation that resulted in rapid global warming and dramatic changes in the Earth's environment.

近期钻探的两处加勒比海域点位保存了古新世晚期热极大事件（late Paleocene thermal maximum）的完整展布沉积记录。该事件为发生于约55 Ma的全球性剧烈变暖事件。这套沉积记录记录了多项显著的环境变化，包括深水缺氧与深海动物群集群灭绝，同时伴生有大规模爆发性火山活动的相关证据。我们提出假说，此次火山活动引发了大洋环流的重组，进而导致快速全球变暖与地球环境的剧烈变迁。