Late Cenozoic magnetostratigraphy (11 - 0 Ma) of the Dongshanding and Wangjiashan sections in the Longzhong Basin, western China

  • Ji-Jun Li Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Xiao-Min Fang 1 Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China;
  • Rob Van der Voo Department of Geological Sciences, the University of Michigan, Ann Arbor, MI 48109-1063, U.S.A.
  • Jun-Jie Zhu Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Conall Mac Niocaill Department of Geological Sciences, the University of Michigan, Ann Arbor, MI 48109-1063, U.S.A.
  • Ji-Xiu Cao Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Wei Zhong Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Huai-Lu Chen Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Jianli Wang Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Jian-Ming Wang Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China
  • Yie-Chun Zhang Department of Geography, Lanzhou University, Lanzhou, Gansu 730 000, China

Abstract

A paleomagnetic study of the 510-m-thick Wangjiashan section of Late Miocene and Pliocene terrestrial sediments reveals a fairly complete reversal record with ages from 1,1 to 1.8 Ma. The magnetostratigraphy of the Dongshanding section, located nearby, reveals a partially overlapping reversal record with ages from 2.2 to 0 Ma, and facilitates correlation of the Wangjiashan section with the global polarity time scale. A new stratigraphic division of the Wangjiashan section replaces the name Linxia formation by five new formation names, based on lithologic variation and mammalian fossil finds. The new formations and their magnetostratigraphically determined ages are: Dongshan Formation (c.1.75-2.6 Ma), Jishi Fm. (c. 2.6-3.6 Ma), Hewangjia Fm. (4.5-6.0 Ma), Liushu Fm. (6.0-7.6 Ma), and Dongxiang Fm. (7.6-c. 12 Ma). The Neogene stratigraphy and fossil mammals suggest that the nearby part of the Tibetan Plateau experienced a persistent denudation during the Late Miocene and Early Pliocene, but that it was uplifted more rapidly at about 3.6 Ma.

Published
1997-01-01
How to Cite
Ji-Jun Li, Xiao-Min Fang, Rob Van der Voo, Jun-Jie Zhu, Conall Mac Niocaill, Ji-Xiu Cao, Wei Zhong, Huai-Lu Chen, Jianli Wang, Jian-Ming Wang, & Yie-Chun Zhang. (1997). Late Cenozoic magnetostratigraphy (11 - 0 Ma) of the Dongshanding and Wangjiashan sections in the Longzhong Basin, western China. Netherlands Journal of Geosciences, 76, 121-134. Retrieved from https://njgjournal.nl/index.php/njg/article/view/12337
Issue
Volume 76 - 1997/1998
Section
Regular paper
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors contributing to Netherlands Journal of Geosciences retain copyright of their work, with first publication rights granted to the Netherlands
Journal of Geosciences Foundation. Read the journal's full Copyright- and Licensing Policy.