Quantitative Contrast of Dabie Orogenic Erosion and Adjacent Sedimentary Basins Deposition through Thermal History Modelling of Fission Track

doi:10.11867/j.issn.1001-8166.2009.08.0942

Advances in Earth Science ›› 2009, Vol. 24 ›› Issue (8): 942-946. doi: 10.11867/j.issn.1001-8166.2009.08.0942

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Quantitative Contrast of Dabie Orogenic Erosion and Adjacent Sedimentary Basins Deposition through Thermal History Modelling of Fission Track

Ding Ruxin ^1,2, Wang Li ³, Xu Changhai ³, Zhou Zuyi ³

1.SINOPEC Exploration & Production Research Institute , Beijing 100083,China;2.China University of Geosciences, Beijing 100083,China;3. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092,China

Received:2009-02-20 Revised:2009-05-27 Online:2009-08-10 Published:2009-08-10
Supported by:
国家自然科学基金项目“西太平洋暖池与东亚古环境：沉积记录的海陆对比”（编号40621063）资助

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Ding Ruxin, Wang Li, Xu Changhai, Zhou Zuyi. Quantitative Contrast of Dabie Orogenic Erosion and Adjacent Sedimentary Basins Deposition through Thermal History Modelling of Fission Track[J]. Advances in Earth Science, 2009, 24(8): 942-946.

Thermal history modelling of fission track opens a promising passage for the quantitative study of the relationship between the orogenic belt erosion and the sedimentary basin deposition. The working principle is to get the average exhumation rates of the orogenic belt through the thermal history modelling of fission track, then compare the exhumation rates with the average deposition rates of the adjacent basins to estimate the proportional relationship between the orogenic belt erosion and the sedimentary basin deposition. With this method, the average exhumaition rates of regional volume are 1 189.67 km³/Ma(with the paleogeothermal gradient being 25 ℃/km) and 1487.08 km³/Ma (with the paleogeothermal gradient being 20 ℃/km) between 65 and 25 Ma in Dabie orogen. They are at least half of average total deposition rates of the adjacent basins in Paleogene.

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