摘要
从昆阳群内刺穿构造时、空分布特征出发 ,详细研究刺穿体边界特征及其性质 ,体内物质组成与结构、构造和变质变形特点。分析地层高孔隙流体作用在刺穿构造发生和成长中的地位和作用 ,提出地层高孔隙流体压力的波动和局部化作用是导致刺穿的重要因素 ,逆冲推覆断裂作用应是继因民组地层岩石水力破裂、碎裂作用之后所发生。昆阳群刺穿构造经历了本区地壳岩石圈由拉张体制下的张性破裂、断裂 (刺穿 )过程向挤压体制下的缩短、增厚过程的转化演化。最后 。
Based on the temporal and spatial changes of diapir bodies in Kunyang group, we have a study in detail on the boundary characteristics, composition, structure, deformation and metamorphism of them. In our opinions, the formation and development of diapirs are controlled by the high pore fluid pressure in strata. The thrust fracturing happened after the hydrau fracturing in rocks of Yinmin Formation. An evolution model of the diapir formation is put forward in this paper.
出处
《云南地质》
2002年第3期230-249,共20页
Yunnan Geology
关键词
形成机制
刺穿构造
水力破裂
塑冲推覆
演化模型
昆阳群
Diapir Structure
Hydraulic Fracturing
Thrusting
Evolution Model
Kunyang Group Central Yunnan
