Detrital zircon evidence for the antiquity of Taiwan

Ching Ying Lan*, Tadashi Usuki, Kuo Lung Wang, Tzen Fu Yui, Kazuaki Okamoto, Yuan Hsi Lee, Takafumi Hirata, Yoshitaka Kon, Yuji Orihashi, Juhn G. Liou, Chun Sun Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

In-situ U-Pb geochronology and Hf isotopic studies of zircons from the Pre-Tertiary basement complex and Eocene rocks of the Central Range of Taiwan were carried out to elucidate the history of detrital zircons older than 2.3 Ga. Zircons from the eastern Backbone Range and Eastern Central Range show Paleoproterozoic to late Neoarchean ages (2.3-≥2. 5 Ga), whereas those from the Hsuehshan Range yield Neoarchean to Mesoarchean ages (2.6-3. 2Ga). The εHf(T) for the Paleoproterozoic to late Neoarchean zircons varies from -7.4 to +5.1, implying both juvenile crustal growth and reworking of old crusts. This dual origin could extend back to Mesoarchean-Paleoarchean (3.0-3.4 Ga) based on Hf isotopic model ages. Consistent but narrower εHf(T) values and Hf crustal model ages for zircons from Taiwan compared to Cathaysia suggest a possible common origin for these zircons, although Taiwan has a generally younger crustal evolution history than SE China.

Original languageEnglish
Pages (from-to)233-243
Number of pages11
JournalGeosciences Journal
Volume13
Issue number3
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

Keywords

  • Cathaysia
  • Hf isotope
  • In-situ U-Pb age
  • Taiwan
  • Zircon

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    Lan, C. Y., Usuki, T., Wang, K. L., Yui, T. F., Okamoto, K., Lee, Y. H., ... Lee, C. S. (2009). Detrital zircon evidence for the antiquity of Taiwan. Geosciences Journal, 13(3), 233-243. https://doi.org/10.1007/s12303-009-0023-3