应用磷灰石裂变径迹求取地层剥蚀量  

Application of Apatite Fission Tracks in Seeking Eroded Strata Thickness

作　　者：赵俊青[1] 纪友亮[2] 王金友[1] 邹伟宏 

机构地区：[1]石油大学地球资源与信息学院,山东东营257061 [2]同济大学海洋与地球科学学院,上海200092 [3]中国石油华北油田分公司地质科学研究院,河北任丘062552

出　　处：《新疆石油地质》2003年第6期579-581,共3页Xinjiang Petroleum Geology

基　　金：国家973项目;渤海湾盆地中生代地层剥蚀量恢复;新生代盆地叠合关系探讨(编号G1999043304)

摘　　要：应用磷灰石裂变径迹长度分析技术,选定澳大利亚扇形模型,沿可能性最大的3种不同热史路径,对冀南地区Q-5井下白垩统的磷灰石裂变径迹长度分布进行了数值模拟。通过与实测磷灰石裂变径迹长度分布的比较,确定了该井合理的地质演化历史。模拟研究结果表明,Q-5井在距今70×106a时,白垩系达到其演化历史上的最大埋深(3500m);之后发生构造抬升并遭受剥蚀,白垩系的最大剥蚀量为2500m.Applying the technique of apatite fission-track length analysis,selecting Australia fanlike model,and along three most possible paths of thermal history,this paper makes numerical simulation of the analytical length distribution of Lower Cretaceous in Q-5Well,Jinan area.Through comparison with the measured length distribution,the reasonable geological evolution history of this well is determined.The simulation study shows that Cretaceous of Q-5Well has ever been in the maximum burial depth(3500m)of its evolution history70million years ago,followed by undergoing tectonic uplift and denudation,and resulting in the maximum eroded thickness of it is2500m.

关 键 词：磷灰石 裂变径迹年龄测定 数值模拟 白垩纪 

分 类 号：P619.213[天文地球—矿床学] TE121.34[天文地球—地质学]