秦岭地区丹风群蛇绿岩古地磁研究及其大地构造意义  

PALEOMAGNETIC STUDY ON THE DANFENG GROUP OPHIOLITE IN QINLING AREA AND ITS TECTONIC SIGNIFICANCE

作　　者：吴汉宁[1] 朱日祥[2] 刘椿[2] 常承法[2] 

机构地区：[1]西北大学地质研究所 [2]中国科学院地质研究所

出　　处：《地震地质》1990年第1期79-85,共7页Seismology and Geology

摘　　要：本文对秦岭造山带内丹风群蛇绿岩进行了较为详尽的古地磁研究,通过对剩磁分量成因形成时代及变质变形作用对特征分量的影响的讨论,初步确定了丹风群古地磁极位置和古纬度值,并对丹风群的形成演化作了初步探讨。This paper presents the results of detailed paleomagnetic study on the ophiolite of Danfeng group in Qinling erogenic zone. The paleomagnetic pole position and paleolati-tude of Danfeng group have been located on the basis of the origin and formation age of remanence, as well as the impact of metamorphism and deformation on the characteristic component. The origin and evolution of Danfeng group have also been discussed.

关 键 词：蛇绿岩 古地磁 大地构造 丹风群 

分 类 号：P318.4[天文地球—固体地球物理学]