Flexural subsidence by 29 Ma on the NE edge of Tibet from the magnetostratigraphy of Linxia Basin, China

Xiaomin Fang, Carmala Garzione, Rob Van der Voo, Jijun Li, Majie Fan

Research output: Contribution to journalArticlepeer-review

290 Scopus citations

Abstract

This study provides a detailed magnetostratigraphic record of subsidence in the Linxia Basin, documenting a 27 Myr long sedimentary record from the northeastern edge of the Tibetan Plateau. Deposition in the Linxia Basin began at ∼29 Ma and continued nearly uninterruptedly until ∼1.7 Ma. Increasing rates of subsidence between 29 and 6 Ma in the Linxia Basin suggest deposition in the foredeep portion of a flexural basin and constrain the timing of shortening in the northeastern margin of the plateau to Late Oligocene-Late Miocene time. By Late Miocene-Early Pliocene time, a decrease in subsidence rates in the Linxia Basin associated with thrust faulting and a ∼10° clockwise rotation in the basin indicates that the deformation front of the Tibetan plateau had propagated into the currently deforming region northeast of the plateau.

Original languageEnglish (US)
Pages (from-to)545-560
Number of pages16
JournalEarth and Planetary Science Letters
Volume210
Issue number3-4
DOIs
StatePublished - May 30 2003
Externally publishedYes

Keywords

  • Asia
  • Flexural basin
  • Fold and thrust belt
  • Magnetostratigraphy
  • Tibetan Plateau

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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