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A mid-Cretaceous change from fast to slow exhumation of the western Chinese Altai mountains: a climate driven exhumation signal?
Journal of Asian Earth Sciences ( IF 3 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.jseaes.2020.104387 Alex Pullen , Matthew Banaszynski , Paul Kapp , Stuart N. Thomson , Fulong Cai
Journal of Asian Earth Sciences ( IF 3 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.jseaes.2020.104387 Alex Pullen , Matthew Banaszynski , Paul Kapp , Stuart N. Thomson , Fulong Cai
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Abstract The Chinese Altai Mountains in western China are bound by Cenozoic transpressional strike-slip faults, many of which show Quaternary activity. To better understand how Mesozoic–Cenozoic deformation has affected the history of exhumation and uplift of the Chinese Altai Mountains, we collected Paleozoic granitoid samples for apatite fission track and apatite U-Th-Sm/He thermochronology. Central apatite fission track ages for N = 6 samples range from 68 to 104 Ma, whereas apatite U-Th-Sm/He ages range from 56 to 272 Ma for N = 23 samples (n = 80 individual analyses) across four transects in the western Chinese Altai. Our results indicate fast cooling during the late Early Cretaceous followed by slow cooling since. Thermal modeling results suggests
更新日期：2020-08-01
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