地质科技情报2017，Vol.36Issue(5)：40-47,8.DOI:10.19509/j.cnki.dzkq.2017.0506
秦岭造山带东段中新生代的隆升:洛南、山阳盆地碎屑颗粒磷灰石裂变径迹记录
Mesozoic-Cenozoic Uplift-Exhumation History of East Qinling: The Record of Detrital Apatite Fission Track Data in Luonan and Shanyang Basins
摘要
Abstract
Many structural and thermochronological studies are focused on West and Center Qinling and Dabie Orogenic Belt,while related studies are few for the East Qinling.It is still unclear whether the uplift-exhumation processes of the whole Qinling Orogenic Belt were contemporaneous during the Meso-Cenozonic times.In order to obtain information of the uplift-exhumation history of the East Qinling,we studied the apatite fission-track thermochronology of clastic particles in Luonan Basin and Shanyang Basin located in the Shangdan suture zone north and south on the both basins.The results show that the mean cooling rate and exhumation rate in the Kuanping Group and Taowan Group of Luonan Basin provenance were 4.05℃/Ma and 0.18 km/Ma respectively during the Cretaeeous period(from 104.4-68 Ma).The mean cooling rate and exhumation rate in the Liuling Group of Shanyang Basin provenance were 2.95℃/Ma and 0.12 km/Ma respectively during the Cretaeeous and the Eocene epoch period(from 129.6-64 Ma).This suggests that the heterogeneity of the uplift-exhumation processes of the North and South Qinling orogenic belt during the Cretaeeous and the Paleocene times.The exhumation rate in the North Qinling plate is higher than that in the South Qinling plate.关键词
磷灰石/裂变径迹/东秦岭/断陷盆地/隆升—剥露Key words
apatite/fission track/East Qinling/fault basin/uplift-exhumation分类
地质学引用本文复制引用
徐世钊,余尚江,李玮,宁奥杰,郑成鹏..秦岭造山带东段中新生代的隆升:洛南、山阳盆地碎屑颗粒磷灰石裂变径迹记录[J].地质科技情报,2017,36(5):40-47,8.基金项目
国家自然科学基金项目(41372204) （41372204）
