鄂西云盖寺地区固态流变构造群落及其对绿松石矿的控制作用

云盖寺地区位于南秦岭造山带东缘，以盛产优质绿松石而闻名。研究发现，在前人所称单斜“层”内包容有丰富的固态流变构造群落，如：顺层掩卧褶皱，鞘褶皱、顺层韧性剪切带、粘滞型石香肠及片内无根褶皱等，并认为它们是在较深构造层次中，以较高温低应变速率方式通过顺层分层剪切变形作用形成。笔者认为绿松石为低温变质热液充填成因，固态流变构造变形控制了绿松石矿床的一些容矿和配矿构造。

DISCOVERING OF RHEID STRUCTURES GROUP AND ITS TURQUOISE ORECONTROLLNG IN YUNGAISHI AREA, NORTHWESTERN HUBEI

Situated in the east margin of the south Qinling orogen, Yungaishi area is wellknown throughout the world as one of the high quality turquoise occurrences. By detailed investigation, the rheid structures group has been found in formerly so - called "monocline", which is composed of bedding recumbent folds, sheath folds, bddding ductile shear zones, sticky boudinage, intrafolial folds, etc. This type of stuctures group was developed in a lower structural level through bedding stratified shear deformation under conditions of high temperature and low strain rate. It is considered that the turquoise was formed by cavity filling with epithermal metamophic solution and the rheid deformation controled some of the host structures and supporting structures of the turquoise ore deposit.