摘要
通过对华容地区特别是岩体中构造特征研究及构造应力场分析,认为该区小墨山、桃花山岩体均为无根岩体,是在本区燕山早、晚两期受到挤压变形过程中混合岩化作用及由江南断裂带由南向北的推覆作用引起的断裂变质和超变质作用的结果。这一研究成果为该区构造特征研究和找矿提供了新的思路,也为中扬子地块南缘油气勘探提供了新的线索。
The study on the structural features of Huarong region, especially of the rock masses, and the structural stress field analysis indicate that the Xiaomo Mountain and Taohua Mountain plutonic rock masses are rootless, which result from the fault metamorphism and ultrametamorphism caused by the overthrust of Jiangnan fault zone from south to north, and from the migmatization of the compresso-deformation process in the Early and Late Yanshanian Periods. This result provided a new basis for the study of the structural features and for the prospection of mineral resources, and also provided new clues for the oil and gas exploration in the southern margin of the middle Yangtze massif.
出处
《湖南地质》
1991年第3期189-196,共8页
Hunan Geology
关键词
地质构造
江南
断裂带
华容地区
Jiangnan fault zone
Thrust-nappe structure
Structural stress field
Fault metamorphism
Rootless pluton
Oil and gas
