【作者】 杨双； 曾佐勋； 李绍凡；

【Author】 Shuang YANG;Zuoxun ZENG;Shaofan LI;School of Earth Sciences,China University of Geosciences;Huazhong Tectonomechanical Research Center;

【机构】 中国地质大学地球科学学院； 中国地质大学(武汉)华中构造力学研究中心；

【摘要】 湖北铁山是亚洲首个发现骨节状石香肠的地区,本文以褶皱叠加型骨节状石香肠为研究对象,获得基质层运动学涡度值的分布,表明:早期的两次纯剪切作用形成骨节状石香肠构造,晚期受到纵弯褶皱作用,由于岩层间力学性质的差异,在香肠构造的基础上叠加褶皱。通过对褶皱形态的测量计算褶皱岩层与周围介质的黏度比下限值为242.12。更多还原

【Abstract】 Tieshan in Hubei is the first areas in Asian where the bone shaped boudins were found.This paper has obtained the map of kinematic vorticity in the matric.It is shown that folding of bone-shaped boudins was formed by twice pure shear during early period;then,folding of bone-shaped boudins was formed by buckling,because of the diffenence of layer’s brittle and ductile.Measuring shape of fold calculate the viscous ratio of fold layer and matrix,and the lower limit is 242.12.Tieshan in Hubei is the first location in Asian where thebone shaped boudins were found.This paper has obtained the kinematic vorticity distribution in the matrix layer.It is shown that the folded bone-shaped boudins was formed by twice pure shear during early periods;then,folded by buckling.By use of the fold rheometer,the viscous ratio of the folded layer tothe matrix is less than 242.12.更多还原