Refining stratigraphic ages of Northern Hsuehshan Range in northern Taiwan by detrital zircon U-Pb dating
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Le résumé fourni par la source
Taiwan is located on northern margin of South China Sea, which evolved from rifting basin to passive margin from Paleocene to Miocene.The northern Hsuehshan Range exposes the Eocene to Miocene strata, which offers a unique place to study the rifting basin history.However, the strata ages in the northern Hsuehshan Range are controversial, particularly for the Hsitsun Formation and Szeleng Sandstone that may correlate with a proposed break-up unconformity in the Eocene and Oligocene.Previously, the Hsitsun Formation was considered to be pre-Early to Middle Eocene in age based on the presence of Nummulites junbarensis in the overlying Szeleng Sandstone.In this paper, we present new U-Pb ages of detrital zircon grains from the Hsitsun Formation and Szeleng Sandstone to constrain the depositional ages of these units.In the Hsitsun Formation, ca.8% of zircon U-Pb grains are Cenozoic in age and have a mean age of 35 Ma indicating that the maximum deposition age of late Eocene for this formation.Combining these results with the ca.30 Ma age for Paling Formation indicates the Szeleng Sandstone is between 30 -35 Ma.The new ages determinations suggest that the deposition was continuous with no evidence of a break-up unconformity from Szeleng Sandstone to Paling Formation.Finally, because much of the stratigraphic interpretations and correlations are based on what were interpreted to be "in situ" biostratigraphic markers, the new U-Pb dates argue for recycling and reworking of several key fossil assemblages.This result has important implications for other stratigraphic interpretations both in Taiwan and in other orogenic systems around the world.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Refining stratigraphic ages of Northern Hsuehshan Range in northern Taiwan by detrital zircon U-Pb dating
- Date Crossref
- 01/01/2018
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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National Chung Cheng University Department of Earth and Environmental Sciences pays non établi dans la noticeUniversité ou école supérieure
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National Museum of Natural Science pays non établi dans la noticeInstitution
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Central Geological Survey pays non établi dans la noticeOrganisme public
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National Taiwan University Department of Geosciences pays non établi dans la noticeUniversité ou école supérieure
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National Taipei University Department of Materials and Mineral Resources Engineering pays non établi dans la noticeUniversité ou école supérieure
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National Taipei University of Technology pays non établi dans la noticeUniversité ou école supérieure
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Institute of Geology pays non établi dans la noticeStructure de recherche
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China Earthquake Administration pays non établi dans la noticeStructure de recherche
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AbsTRAcT pays non établi dans la noticeInstitution
Department of Earth and Environmental Sciences — National Chung Cheng University, National Museum of Natural Science et Central Geological Survey, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.