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First results of the biostratigraphy and geochronology of the classic Nihewan Fauna, China

Published version
Peer-reviewed

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Authors

Farjand, A 
Zhang, Z 
Gibbard, PL 
Bi, S 

Abstract

jats:pThe Nihewan Basin is infilled by a relatively complete Pliocene to Pleistocene sequence, rich mammalian fossils and containing many Palaeolithic artefacts, implying that it is a unique location for Quaternary multidisciplinary study. Fossil excavations in these deposits have been carried out for nearly a century. The systematic study of the fossils by Teilhard de Chardin and Piveteau in 1930 laid the foundations for the classic Nihewan Faunal assemblage, which has been widely followed as a standard for the Early Pleistocene biochronology in eastern Asia. With the availability of magnetostratigraphic analyses on several sections in the Nihewan basin, a comprehensive geochronological study is timely pending. Here we report the results of a comprehensive survey of the Xiashagou section, where the classic Nihewan Fauna was discovered. By synthesising the lithostratigraphical, biostratigraphical, and magnetostratigraphical information, together with measurements taken by the authors, the total thickness of the Nihewan Formation in the Xiashagou section being 116 m. Furthermore, the geochronological study demonstrates that the classic Nihewan Fauna was originally recovered from at least 6 fossil horizons, spanning from ∼2.4 Ma to ∼1.8 Ma, i.e., the early Early Pleistocene. The new evidence from the Xiashagou section also suggests several cycles of fluctuations in the biodiversity and population of the classic Nihewan Fauna during the early Pleistocene. The preliminary correlation of these cycles matches the short periods of glaciation in the early Pleistocene.</jats:p>

Description

Peer reviewed: True


Acknowledgements: The authors thank Professor Deng Chenglong for his significant commentary on the sedimentology and palaeomagnetism of the Xiashagou section during field season 2019. We also thank the TNHM management, Mrs. Zheng Min for providing access to their precious collection, Dr. Joonas Wasilijef for his constructive arguments on the geochemical properties of sediments, Professor Tong Haowen and Dr. Jiangzuo Qigao for validating the list of Classic Nihewan Fauna and its carnivores, respectively.

Keywords

37 Earth Sciences, 3705 Geology

Journal Title

Frontiers in Earth Science

Conference Name

Journal ISSN

2296-6463
2296-6463

Volume Title

11

Publisher

Frontiers Media SA