本文根据1∶5万贡溪幅区调资料,阐述了湖南新晃贡溪—贵州天柱坪地一带震旦—下寒武系区域埋深极低变质岩岩石宏、微观特征,结合区域震旦—下寒武系地质背景基础上,探讨了该区域的极低变质作用与极低变质岩。为贵州区域变质作用、变质相带的划分与研究提供了新的资料。
According to the regional survey information of Gongxi of the scale of 1∶50,000,the macro-micro features of the extra-low metamorphic rock of Sinian-Lower Cambrian in Gongxi of Hunan and Pingdi of Guizhou are narrated,combine with the geological background of Sinian-Lower Cambrian,the extra-low metamorphism and the extra-low metamorphic rock are discussed.It affords new information for the study and division of regional metamorphism and metamorphic band in Guizhou.