Simultaneous mountain building in the Taiwan orogenic belt

Yuan Hsi Lee, Tim Byrne, Wei Hau Wang, Wei Lo, Ruey-Juin Rau, Hsueh Yu Lu

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Abstract

The obliquity of the arc-continent collision in Taiwan is thought to have produced a southward- propagating orogenic system starting as early as 8 Ma. We combine 62 new zircon fission- track ages with timing of rapid subsidence in the foreland basin to identify the timing of the onset of exhumation and orogenesis. The oldest completely reset zircon fission-track ages and the onset of rapid tectonic subsidence in both the northern and southern parts of the foreland basin are ca. 5-6 Ma. We propose that north-south rifting in the South China Sea created a north-trending continental margin before the collision rather than the commonly assumed northeast-trending margin. Consequently, both this north-trending continental margin and the Luzon arc of the Philippine Sea plate were subparallel, resulting in an initial collision that was simultaneous along strike.

Original languageEnglish
Pages (from-to)451-454
Number of pages4
JournalGeology
Volume43
Issue number5
DOIs
Publication statusPublished - 2015 Mar 27

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All Science Journal Classification (ASJC) codes

  • Geology

Cite this

Lee, Y. H., Byrne, T., Wang, W. H., Lo, W., Rau, R-J., & Lu, H. Y. (2015). Simultaneous mountain building in the Taiwan orogenic belt. Geology, 43(5), 451-454. https://doi.org/10.1130/G36373.1