Pleistocene onset of rapid, punctuated exhumation in the eastern Central Range of the Taiwan orogenic belt

Wei Hao Hsu, Timothy B. Byrne, William Ouimet, Yuan Hsi Lee, Yue Gau Chen, Matthijs Van Soest, Kip Hodges

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14 Scopus citations

Abstract

The Taiwan orogenic belt is often treated as a steady, southward-propagating orogenic system with an essentially constant erosion rate of 4-6 mm/yr over the past 5 m.y. We present 4 new age-elevation transects from the Central Range based on 19 new and 86 previously published fission track and (U-Th)/He dates of completely reset detrital zircon and apatite grains. The age-elevation curves and thermal models imply slow cooling prior to ca. 2-1.5 Ma (at exhumation rates of ~0.1 mm/yr), an increase in exhumation rates from ca. 2-1.5 Ma to ca. 0.5 Ma (2-4 mm/yr), and possibly a further acceleration in exhumation from ca. 0.5 Ma to present (4-8 mm/yr). Three transects from three different latitudes in the eastern Central Range yield similar results, each showing punctuated exhumation with progressively faster rates.

Original languageEnglish (US)
Pages (from-to)719-722
Number of pages4
JournalGeology
Volume44
Issue number9
DOIs
StatePublished - Sep 1 2016

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ASJC Scopus subject areas

  • Geology

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