中国地球化学学报（英文版）2006，Vol.25Issue(2)：143-151,9.
Fission track evidence for the Mesozoic-Cenozoic tectonic uplift of Mt. Bogda, Xinjiang, Northwest China
Fission track evidence for the Mesozoic-Cenozoic tectonic uplift of Mt. Bogda, Xinjiang, Northwest China
SHEN Chuanbo 1MEI Lianfu 1PENG Lei 1ZHANG Shiwan 2LIU Lin 2TANG Jiguang1
作者信息
- 1. China University of Geosciences, Wuhan 430074, China
- 2. Jianghan Oilfield Company, SINOPEC, Qianjiang 433124, China
- 折叠
摘要
Abstract
Fission-track dating evidence from 5apatite samples and 4 zircon samples, and modeled time-temperature thermal history indicate that since Late Jurassic-Cretaceous (150 -106 Ma), the uplift process of Mt. Bogda can be divided into four stages of thermal evolution: 150 - 106, 75 -65, 44 -24and 13 -9 Ma. Before 44- 24 Ma, the cooling rate and uplifting rate of the southern and northern segments of Mt. Bogda are almost the same, showing that the uplifting of Mt. Bogda is an overall process.Since 44 - 24 Ma, the uplifting of the southern and northern segments of Mt. Bogda has shown differences. During 42 - 11 Ma, the northern segment of Mt. Bogda was at a steady stage, with the cooling rate being 0.03℃/Ma and the uplifting rate being 0. 001 mm/a. From 11 Ma to the present, the northern segment of Mt. Bogda was at a rapid cooling and uplifting stage, with the cooling rate being 5.72℃/Ma and the uplifting rate being 0.19 mm/a. However, the southern segment of Mt. Bogda has been at a rapid cooling and uplifting stage since 26 Ma, with the cooling rate being 1.24℃/Ma and the uplifting rate being 0.041 mm/a during 26 -9 Ma; 4.88℃/Ma and 0. 163 mm/a from 9 Ma till now.关键词
fission track/thermal history/uplift/Mesozoic-Cenozoic/Mt. BogdaKey words
fission track/thermal history/uplift/Mesozoic-Cenozoic/Mt. Bogda分类
天文与地球科学引用本文复制引用
SHEN Chuanbo ,MEI Lianfu,PENG Lei,ZHANG Shiwan,LIU Lin,TANG Jiguang..Fission track evidence for the Mesozoic-Cenozoic tectonic uplift of Mt. Bogda, Xinjiang, Northwest China[J].中国地球化学学报（英文版）,2006,25(2):143-151,9.
