2004•Unpublished venueRequires access

UPLIFT PROCESS OF MUFUSHAN AND THERMOCHRONOLOGY OF WANGXIANG GRANITES IN NORTHEASTERN HUNAN PRO- VINCE

Peng He-qiu, Jia Bao-hua

Abstract

Northeastern Hunan area is a polycycle composite orogenic belt and exhibits basin-range structures.Thermochronological dating is used to study the thermal history of Wangxiang intrusive complex and analyze the uplift process of Jiuling-Mufushan range.Wangxiang granites intruded in approximately 140 Ma.Four fission track zircon ages of Wangxiang granites from different elevations are in the range of 74.3-85.5 Ma;four fission track apatite ages of Wangxiang granites from different elevations are in the range of 45.2-55.6 Ma.The results show Jiuling-Mufushan range has experienced stronger uplift and denude-planned process in three stages(132.0-120.0,81.1-55.6,47.0-30.0 Ma)since Mesozoic and Cenozoic era.

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Key concepts: Thermochronology, Fission track dating, Zircon, Geology, Cenozoic, Mesozoic, Geochemistry, Range (aeronautics)