PALEOTEMPERATURE BY APATITE FISSION TRACK IN THE ORDOS BASIN, NW CHINA

作     者：SUN Shaohua WANG Lu LI Xiaoming LIU Shunsheng WANG Jiyang (Changsha Institute of Geotectonics, Academia Sinica, Changsha, 410013, China)(Central-South University of Technology, Changsha, 410083, China)(Institute of Geology, Academia Sinica, Beijing, 

出 版 物：《Geotectonica et Metallogenia》 (大地构造与成矿学（英文版）)

年 卷 期：1996年第20卷第Z2期

页      面：162-170页

学科分类：0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：fission track paleotemperature Ordos basin 

摘      要：The effective heating time for apatite fission track ranges from 200 to 300 Ma in the Ordos Basin. The annealing zone in the western margin of the basin is shallow and wide,having its paleotemperature gradient (1. 5-2. 1 ℃ /100m) less than that (1. 9-2. 5 ℃ /100m) of the present time, while the annealing zone in main part of the basin is relatively deep and narrow, having its paleotemperature gradient (3. 8-4. 7℃ /100m) much bigger than that (2. 0-3. 1℃/100m) of the present time. The results of the apatite fission track analysis shows that there are three times tectonothermal events (215 Ma. 135 Ma and 72 Ma) in Ordos basin since late Paleozoic.