Uplifting History of Meso-Cenozoic Era in the Central-Southern Part of Longmenshan Region: Evidence from the Fission-Track Ages
详细信息
- 责任者：Tang Zhemin (State Key Laboratory of Continental Tectonics and Dynamics ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Guo Xianpu
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(11)
- 关键词：隆起 ; uplifts ; 裂变径迹计时 ; fission-track dating ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.3471-3478
- 图表：4 illus., 2 tables, 9 refs.
- 分类号：0300
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Through fission track chronology method,we have analyzed apatite and zircon of the Mesozoic sequence in the central-southern Longmenshan and simulated the thermal history and got the following results: 1) the Mesozoic sequence at the Tianquan-Huaiyuan area in the central-southern Longmenshan had the strongest uplift in the late Himalayan stage, coincident with the strong structure movement in the region; 2) for the profiles at southwestern and western Huaiyuan Town, the rapid uplift in late Himalayan initiated from 20 Ma in the west to 7～5 Ma in the east and continued up to now, i.e., the beginning time of the uplift became younger from west to east, which is well corresponding with the eastwards progressive thrusting of the Longmenshan orogeny; and 3) some of local uplift events occurred at 165～155 Ma, 140～77 Ma and 55～22 Ma.