Abstract
This paper reports 40Ar-39Ar ages of northwestern China’s Tarim Basin Permian basalts. 40Ar-39Ar age dating for basaltic samples from the Yingan section, Keping area and Damusi section of the southwestern part of Tarim Basin yields plateau ages of (281.8±4.2) Ma and a weighted mean value of (290.1±3.5) Ma respectively. This study combined with previous data indicates that the basaltic rocks from the studied area formed during 282∼290 Ma. 40Ar-39Ar age dating from the basalts addresses a tectonothermal event in the Tarim Basin that occurred during the Early Permian of 278∼290 Ma.
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Project supported by the National Natural Science Foundation of China (Nos. 40472120 and 40472040) and the National Basic Research Program (973) of China (No. 2001CB409801)
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Yang, Sf., Li, Zl., Chen, Hl. et al. 40Ar-39Ar dating of basalts from Tarim Basin, NW China and its implication to a Permian thermal tectonic event. J. Zhejiang Univ. - Sci. A 7 (Suppl 2), 320–324 (2006). https://doi.org/10.1631/jzus.2006.AS0320
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DOI: https://doi.org/10.1631/jzus.2006.AS0320