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Modeling Thermal History During Low Temperature by K-Feldspar MDD and Fission Track: Taking the Meso-Cenozoic Tectonic Evolution in Saishitengshan in the Northern Margin of Qaidam Basin as an Example
详细信息   
摘要

K-feldspar MDD (Multiple Diffusion Domain) and fission track are two commonly-used methods in low closure temperature thermal chronometry. By modeling both the feldspar 39Ar/40Ar data and the fission track age and track-length data, the thermal history that sample underwent can be revealed and the effective temperature range of both feldspar 39Ar/40Ar method and fission track method is extended. Because of the multiple resolution of modeling, it is important to restrict the modeling process to gain a reasonable result, though it seems difficult. Three rapid cooling events, occurring at 130150 Ma, 3040 Ma and 510 Ma respectively, in northern margin of Qaidam Basin are revealed by feldspar MDD method and fission track method.

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