地震地质 ›› 1990, Vol. 12 ›› Issue (1): 79-85.

• 科研简报 • 上一篇    下一篇

秦岭地区丹风群蛇绿岩古地磁研究及其大地构造意义

吴汉宁1, 朱日祥2, 刘椿2, 常承法2   

  1. 1. 西北大学地质研究所;
    2. 中国科学院地质研究所
  • 收稿日期:1988-08-31 出版日期:1990-03-07 发布日期:2009-11-25

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

Wu Han-ning1, Zhu Ri-xiang2, Liu Chun2, Chang Cheng-fa2   

  1. 1. Institute of Geology, Northwest University;
    2. Institute of Geology, Academia Sinica
  • Received:1988-08-31 Online:1990-03-07 Published:2009-11-25

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。

关键词: 古地磁, 蛇绿岩, 秦岭造山带

Abstract: 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.

Key words: Paleomagnetism, Ophiolite, Qinling orogenic zone