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The^(40)Ar/^(39)Ar age record of formation and uplift of the blueschists and eclogites in the western Tianshan Mountains 被引量:35

The ^(40)Ar/^(39)Ar age record of formation and uplift of the blueschists and eclogites in the western Tianshan Mountains
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摘要 The <sup>40</sup>Ar/<sup>39</sup>Ar ages indicate that the eclogite facies rocks of the Hasiate slice in the western Tianshan Mountains were formed at the early stage of Devonian (401 Ma) and had been uplifted to the greenschist facies tectonic level in the middle stage of Devonian (381 Ma). The formation and uplift of the blueschists of the Akesayi slice are constrained to the late stage of Devonian (370-364 Ma). The different tectonic slices in the high-pressure metamorphic belt have experienced the different uplift history. The ^(40)Ar/^(39)Ar ages indicate that the eclogite facies rocks of the Hasiate slice in the western Tianshan Mountains were formed at the early stage of Devonian (401 Ma) and had been uplifted to the greenschist facies tectonic level in the middle stage of Devonian (381 Ma). The formation and uplift of the blueschists of the Akesayi slice are constrained to the late stage of Devonian (370-364 Ma). The different tectonic slices in the high-pressure metamorphic belt have experienced the different uplift history.
出处 《Chinese Science Bulletin》 SCIE EI CAS 2000年第11期1047-1052,共6页
关键词 western Tianshan Mountains ECLOGITE BLUESCHIST <sup>40</sup>Ar/<sup>39</sup>Ar age. western Tianshan Mountains, eclogite, blueschist, ^(40)Ar/^(39)Ar age.
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