摘要
Biostratigraphic,chemostratigraphic, and magnetostratigraphic studies of the Paleocene and early Eocene sediments in the Nanxiong Basin of Guangdong, Chijiang Basin of Jiangxi Province, Qianshan Basin of Anhui Province, Hengyang Basin of Hunan Province, and Erlian Basin of Inner Mongolia, China, provide the first well-resolved geochronological constraints on the stratigraphic framework for the early Paleogene of Asia. A sudden appearance of modern mammalian orders at the Gashatan-Bumbanian boundary is the same pattern as observed in North America and Europe, indicating the faunal turnover is related to the transient global warming event at the Paleocene-Eocene boundary known as the Paleocene-Eocene Thermal Maximum (PETM).