Apatite Fission Track Study of Cenozoic Uplifting and Exhumation of Wutai Mountain, China

Wutai Mountain is the highest mountain in Taihang Mountain‐chain, which is one of the important boundaries of the three grade physiognomy in China. The study on its uplifting history is important in confirming the forming age of the three grade physiognomy. We collected a series of rock samples alon...

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Bibliographic Details
Published in:Chinese journal of geophysics 2008-03, Vol.51 (2), p.256-264
Main Authors: QING, Jian‐Chun, JI, Jian‐Qing, WANG, Jin‐Duo, PENG, Qing‐Lan, NIU, Xiang‐Long, GE, Zhi‐Hong
Format: Article
Language:English
Subjects:
Cenozoic
Fission track
Regional tectonic evolution
Uplifting
Wutai Mountain
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Summary:Wutai Mountain is the highest mountain in Taihang Mountain‐chain, which is one of the important boundaries of the three grade physiognomy in China. The study on its uplifting history is important in confirming the forming age of the three grade physiognomy. We collected a series of rock samples along two sections, one is from the Beitai peak of Wutai Mountain northwards and downwards to its foot, and the other is from the maximal altitude of the Changchengling region, Fuping county, eastwards and downwards to its foot. Then we selected 16 samples to make apatite fission track study. The histogram of length distribution of the confined fission track shows that the samples in Wutai Mountain had been cooling monotonously since the end of late Cretaceous, i.e. Wutai Mountain had been uplifting since then. The analysis of the fission track age‐height plot of samples, the inverse modeling of thermal history and Excel data fitting reveal that the uplifting of Wutai Mountain was a episodic course since the end of late Cretaceous, which included three rapid uplifting periods, 74~58 Ma, 46~31 Ma and about 15 Ma. The uplifting of Wutai Mountain since the end of late Cretaceous correspond to the uplifting of other regions in Taihang Mountain‐chain and its peripheral mountains, such as Zhangxuan Uplift and Taishan Mountain etc. in time, indicating Cenozoic uplifting of Wutai Mountain is a part of regional tectonic evolution.
ISSN:0898-9591
2326-0440
DOI:10.1002/cjg2.1217