Analysis on the Tieling Formation Characteristics of Marble Sheath Folds at Yangshigou
详细信息
- 责任者：Zhang Yipeng (School of Earth and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Gao Xue
- 刊名：North China Earthquake Sciences
- 出版年：2012
- 卷期：30(3)
- 关键词：鞘褶皱 ; sheath folds ; 北京 ; Beijing
- 页码：p.51-53
- 图表：1 illus., 8 refs.
- 分类号：0300
- issnNo：ISSN1003-1375
- isbnNo：CN13-1102/P
摘要
In the marble of Tieling Formation at Yangshigou, the sheath folds that are perpendicular to the maximum principal strain axis X and perpendicular to the intermediate strain axis Y are found and the deformation characteristics and mechanics are analyzed in this paper. The results show that sheath folds reflect the ductile shearing direction generally in SSE direction 150°~160°, and formed later than formation time of the marble of Tieling Formation.