用电子自旋共振(ESR)测年法测定断层活动年代的探讨

地震地质 ›› 1994, Vol. 16 ›› Issue (3): 269-274.

用电子自旋共振(ESR)测年法测定断层活动年代的探讨

黄培华

中国科学技术大学地球和空间科学系, 合肥 230026

收稿日期:1992-03-01 修回日期:1994-03-01 出版日期:1994-09-07 发布日期:2009-11-25

STUDY ON ELECTRON SPIN RESONANCE(ESR)DATING OF FAULT MOVEMENT

Huang Peihua

Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026

Received:1992-03-01 Revised:1994-03-01 Online:1994-09-07 Published:2009-11-25

摘要/Abstract

摘要： 阐述了断层泥石英颗粒ESR信号达到零化的温度和压力环境,通过4个具体ESR测年实例,论述了测年样品的不同零化程度和测年数据的可靠性。对ESR信号与TL(热释光)信号零化环境的差别及其原因进行了初步的探讨。介绍了断层测年样品ESR信号达到零化的验证的方法。同时,提出了断层测年样品采集时应注意的有关问题。

关键词: ESR测年法, 零化环境, 断层活动年代

Abstract: The results of pressure and heating experiments on quartz grams from hault gouge show thatthe frictional shearing stress and thermal stress for fault activity are important in resetting of ESRsignals. We found the that difference of resetting conditions of ESR and TL signals are maincause because of difference in energy level of trapped elections excited by fault frictional and thermal stresses. The TL signals reset to zero level easier than ESR signals under the same a faultmovement because TL signals are related to shallow energy level of trapped elections. Therefore,the ESR dating of fault movement is releable when the ESR age coincides with TL age for thesarne sample of fault gouge. The opinions of further study on ESR dating of fault movement arealso discussed in this paper.

Key words: ESR dating method, Reset environment, Fault activity age

黄培华. 用电子自旋共振(ESR)测年法测定断层活动年代的探讨[J]. 地震地质, 1994, 16(3): 269-274.

Huang Peihua. STUDY ON ELECTRON SPIN RESONANCE(ESR)DATING OF FAULT MOVEMENT[J]. SEISMOLOGY AND GEOLOGY, 1994, 16(3): 269-274.