Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range
Abstract The evolution of the Taiwan orogen, an active arc–continent collision zone between the North Luzon Arc (NLA) and the Eurasian continent, is recorded in arc volcanic and sedimentary rocks from the Taiyuan retro‐foredeep basin of the Coastal Range, eastern Taiwan. Arc volcanism in the norther...
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| Format: | Article |
| Language: | English |
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Wiley
2023-03-01
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| Series: | Geochemistry, Geophysics, Geosystems |
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| Online Access: | https://doi.org/10.1029/2022GC010787 |
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| author | Tsai‐Wei Chen Mei‐Fei Chu Wen‐Shan Chen Sun‐Lin Chung Hao‐Yang Lee Yoshiyuki Iizuka |
| author_facet | Tsai‐Wei Chen Mei‐Fei Chu Wen‐Shan Chen Sun‐Lin Chung Hao‐Yang Lee Yoshiyuki Iizuka |
| author_sort | Tsai‐Wei Chen |
| collection | DOAJ |
| description | Abstract The evolution of the Taiwan orogen, an active arc–continent collision zone between the North Luzon Arc (NLA) and the Eurasian continent, is recorded in arc volcanic and sedimentary rocks from the Taiyuan retro‐foredeep basin of the Coastal Range, eastern Taiwan. Arc volcanism in the northern NLA experienced a magmatic culmination at 9–7 Ma and a cessation at 5.3–4.3 Ma, based on new U‐Pb zircon ages. Young zircon U‐Pb ages (1.74, 1.58, and <1.2 Ma) and low Hf isotope signatures also indicate that three biotite‐bearing lapilli tuff layers deposited in the retro‐foredeep basin are associated with eruptions of the Lutao volcano in the southern NLA. NLA volcanism terminated progressively from ∼5.3 to <1.2 Ma in response to a southward‐propagating collision zone that followed the uplift of the orogenic wedge by <3 myr. The detrital zircon U‐Pb age spectra suggest no significant shift in provenance during the Plio‐Pleistocene period and indicate that the synorogenic sediments in the Taiyuan Basin were mainly derived from the Yuli Belt, a Miocene accretionary complex in the eastern Taiwan orogen. The accumulation rate of synorogenic deposits varies from 0.53 to 5.14 km/myr, with an abrupt increase at ∼2 Ma. This new rate is higher than the previously proposed rates and that of the pro‐foreland basin to the west, suggesting asymmetric and rapid uplift of the Taiwan orogen. |
| first_indexed | 2024-03-11T12:59:13Z |
| format | Article |
| id | doaj.art-21c4b5f7656f4ceb8d58d0f077d771b0 |
| institution | Directory Open Access Journal |
| issn | 1525-2027 |
| language | English |
| last_indexed | 2024-03-11T12:59:13Z |
| publishDate | 2023-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geochemistry, Geophysics, Geosystems |
| spelling | doaj.art-21c4b5f7656f4ceb8d58d0f077d771b02023-11-03T16:55:24ZengWileyGeochemistry, Geophysics, Geosystems1525-20272023-03-01243n/an/a10.1029/2022GC010787Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal RangeTsai‐Wei Chen0Mei‐Fei Chu1Wen‐Shan Chen2Sun‐Lin Chung3Hao‐Yang Lee4Yoshiyuki Iizuka5Department of Geosciences National Taiwan University Taipei TaiwanDepartment of Geosciences National Taiwan University Taipei TaiwanDepartment of Geosciences National Taiwan University Taipei TaiwanDepartment of Geosciences National Taiwan University Taipei TaiwanInstitute of Earth Sciences Academia Sinica Taipei TaiwanInstitute of Earth Sciences Academia Sinica Taipei TaiwanAbstract The evolution of the Taiwan orogen, an active arc–continent collision zone between the North Luzon Arc (NLA) and the Eurasian continent, is recorded in arc volcanic and sedimentary rocks from the Taiyuan retro‐foredeep basin of the Coastal Range, eastern Taiwan. Arc volcanism in the northern NLA experienced a magmatic culmination at 9–7 Ma and a cessation at 5.3–4.3 Ma, based on new U‐Pb zircon ages. Young zircon U‐Pb ages (1.74, 1.58, and <1.2 Ma) and low Hf isotope signatures also indicate that three biotite‐bearing lapilli tuff layers deposited in the retro‐foredeep basin are associated with eruptions of the Lutao volcano in the southern NLA. NLA volcanism terminated progressively from ∼5.3 to <1.2 Ma in response to a southward‐propagating collision zone that followed the uplift of the orogenic wedge by <3 myr. The detrital zircon U‐Pb age spectra suggest no significant shift in provenance during the Plio‐Pleistocene period and indicate that the synorogenic sediments in the Taiyuan Basin were mainly derived from the Yuli Belt, a Miocene accretionary complex in the eastern Taiwan orogen. The accumulation rate of synorogenic deposits varies from 0.53 to 5.14 km/myr, with an abrupt increase at ∼2 Ma. This new rate is higher than the previously proposed rates and that of the pro‐foreland basin to the west, suggesting asymmetric and rapid uplift of the Taiwan orogen.https://doi.org/10.1029/2022GC010787TaiwanCoastal Rangezircon U‐Pb geochronologyretro‐foredeep basinsediment accumulation rate |
| spellingShingle | Tsai‐Wei Chen Mei‐Fei Chu Wen‐Shan Chen Sun‐Lin Chung Hao‐Yang Lee Yoshiyuki Iizuka Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range Geochemistry, Geophysics, Geosystems Taiwan Coastal Range zircon U‐Pb geochronology retro‐foredeep basin sediment accumulation rate |
| title | Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range |
| title_full | Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range |
| title_fullStr | Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range |
| title_full_unstemmed | Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range |
| title_short | Retro‐Foredeep Basin Evolution in Taiwan: Zircon U‐Pb and Hf Isotope Constraints From the Coastal Range |
| title_sort | retro foredeep basin evolution in taiwan zircon u pb and hf isotope constraints from the coastal range |
| topic | Taiwan Coastal Range zircon U‐Pb geochronology retro‐foredeep basin sediment accumulation rate |
| url | https://doi.org/10.1029/2022GC010787 |
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