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New paleomagnetic results from Ceno-Mesozoic volcanic rocks along southern rim of the Tarim Basin, China*

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Abstract

Paleomagnetic samples were collected from four localities located in the southern rim of the Tarim basin. The samples were taken from volcanic rocks erupted between Jurassic and Quaternary. Detailed analysis of all samples has been carried out with progressive thermal demagnetization. A characteristic remanence (ChRM) with higher unblocking temperature has been isolated from all samples. The pole position from the middle Jurassic is at 52.5°N, 187.9°E(dp = 3.7°,dm =6.5°); the directions of the ChRM of Cretaceous correspond to a paleopole at 69.7°N, 211.6°E (dp = 9.8°,dm = 15.9°); the Quaternary pole from the Pulu site is at 79. 9°N, 183.1°E(dp = 1.6°.dm =2.4°). On the basis of these new paleomagnetic data, tectonic evolution of Tarim block is presented.

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Authors and Affiliations

  1. Lanzhou Institute of Geology, Chinese Academy of Sciences, 730000, Lanzhou, China

    Meng Zifang, Deng Yunshan, Ding Zhaohai & Zheng Yanpeng

  2. Institute of Geology and Mineral Resources of BGMR of Xinjiang, 830000, Urumuqi, China

    Li Yong’an & Sun Dongjiang

Authors
  1. Meng Zifang
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  2. Deng Yunshan
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  3. Ding Zhaohai
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  4. Zheng Yanpeng
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  5. Li Yong’an
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  6. Sun Dongjiang
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Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 49334050) and the National Key Task Program.

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Zifang, M., Yunshan, D., Zhaohai, D. et al. New paleomagnetic results from Ceno-Mesozoic volcanic rocks along southern rim of the Tarim Basin, China*. Sci. China Ser. D-Earth Sci. 41 (Suppl 2), 91–104 (1998). https://doi.org/10.1007/BF02984517

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  • DOI: https://doi.org/10.1007/BF02984517

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