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地球科学进展  2009, Vol. 24 Issue (8): 942-946    DOI: 10.11867/j.issn.1001-8166.2009.08.0942
研究简报     
大别造山带与毗邻沉积盆地间剥蚀沉积关系的裂变径迹热史模拟定量对比
丁汝鑫1,2,王利3,许长海3,周祖翼3
1.中国石油化工股份有限公司石油勘探开发研究院,北京 100083; 2.中国地质大学(北京),北京 100083;
3.同济大学海洋地质国家重点实验室,上海 200092
Quantitative Contrast of Dabie Orogenic Erosion and Adjacent Sedimentary Basins Deposition through Thermal History Modelling of Fission Track
Ding Ruxin1,2, Wang Li3, Xu Changhai3, Zhou Zuyi3
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
 全文: PDF(12176 KB)  
摘要:

通过利用裂变径迹热史模拟来探讨山盆之间剥蚀沉积关系为定量对比山盆之间剥蚀沉积关系提供了一种可能的途径。其原理主要是通过裂变径迹热史曲线,求取造山带区域平均剥露速率,再将其与毗邻盆地沉积速率对比,进而判断山盆之间剥蚀沉积比例关系。通过计算可以得到大别造山带65~25 Ma区域体积平均剥露速率为1 189.67 km3/Ma(当古地温梯度为25℃/km时)、1 487.08 km3/Ma(当古地温梯度为20℃/km时)。其剥蚀速率至少占到了毗邻盆地古近纪平均总沉积速率的一半以上。其原理主要是通过裂变径迹热史曲线,求取造山带区域平均剥露速率,再将其与毗邻盆地沉积速率对比,进而判断山盆之间剥蚀沉积比例关系。

关键词: 裂变径迹热史模拟剥蚀沉积关系大别造山带新生代盆地    
Abstract:

      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.

Key words: Fission track    Thermal history modelling    Relationship of erosion and deposition    Dabie orogen    Cenozoic basin
收稿日期: 2009-02-20 出版日期: 2009-08-10
:  P512.2  
基金资助:

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.

通讯作者: 丁汝鑫     E-mail: jiowr@sohu.com
作者简介: 丁汝鑫(1978-),男,辽宁海城人,博士后,主要从事构造热史及综合石油地质研究. E-mail:jiowr@sohu.com
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引用本文:

丁汝鑫,王利,许长海,周祖翼. 大别造山带与毗邻沉积盆地间剥蚀沉积关系的裂变径迹热史模拟定量对比[J]. 地球科学进展, 2009, 24(8): 942-946.

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. Advances in Earth Science, 2009, 24(8): 942-946.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2009.08.0942        http://www.adearth.ac.cn/CN/Y2009/V24/I8/942

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