石油与天然气地质 ›› 1998, Vol. 19 ›› Issue (2): 93-98.doi: 10.11743/ogg19980202

• 论文 • 上一篇    下一篇

ESR测年在石油地质研究中的应用

郑荣才   

  1. 成都理工学院沉积地质研究所“油气藏地质及开发工程”国家重点实验室, 四川成都610059
  • 收稿日期:1997-11-15 出版日期:1998-06-25 发布日期:2012-01-18

APPLICATION OF ESR DATING TO PETROLEUM GEOLOGY

Zheng Rongcai   

  1. State Laboratory of Hydrocarbon Reservoir Geology, Chengdu College of Technology, Chengdu, Sichuna
  • Received:1997-11-15 Online:1998-06-25 Published:2012-01-18

PDF (PC)

1025

被引次数

27

摘要：

ESR测年的依据为石英形成后所吸附的天然核辐射总剂量与周围物质中由K,Th,U含量计算的年辐射剂量之间的比值。石英虽是一种广布的造岩矿物,较为容易采集,但在采集时必须确定石英的产状和成因特征。不同成因特征的石英ESR年龄代表着不同的地质意义,如次生石英的ESR年龄代表着裂隙充填年龄；重结晶石英的ESR年龄代表着与构造应力作用期次相当的石英重结晶年龄。在实际研究中,石英ESR年龄主要应用于裂隙和溶蚀期次的划分和定年；构造作用期次划分与定年。结合石英结晶形态、颜色、包裹体及其他共生矿物的研究,ESR测年还可用来判别油气藏演化各阶段的地质特征,研究裂缝和溶蚀作用的发展演化规律。

关键词: ESR测年, 新技术, 油气地质, 应用

Abstract:

The basis of ESR dating is the ratio of total nuclear radiation amount absorbed by quartz to per year radiation amount that was calculated according to K,Th and U contents in surrounding substances.The ESR age of different genetic quartz may have different geological significance,so it is necessary to pay attention to the occurrence and genesis of the quartz during sampling.In practical,the ESR age of quartz is mainly used to distinguish different fissure and solution stages and ages;to distinguish tectonic periods and ages.Combined with the configuration and colour of the quartz crystal,the inclusions and the associated minerals,ESR dating could also be used to distinguish the geological features during hydrocarbon migration,to study the development and evolution rule of the fissur and solution.