摘要
岩浆热液矿床是在地壳浅部形成的,恰好位于浅源地震的震源深度范围。文章将地震机制中的微裂隙群区理论引入到岩浆热液矿床成矿过程中,地震组合模式中闭锁带必须在下一次断裂滑动之前破坏,所以这个带为微裂群区和它相关的震源区的核心。文章认为微裂群区理论不但揭示了孕震机制,同时也揭示了岩浆热液矿床形成过程,岩浆热液侵位与断裂形成过程中微裂群区的形成发展密切相关,成矿期矿体范围内应力场与区域应力场呈共轭关系。微裂群区即为岩浆热液矿床的矿化富集场,控矿的隐爆角砾岩带也与微裂群区密切相关。
Magmatic hydrothermal fluid ore deposit is formed at the shallow crust and occurs just in the extent of shallow earthquake center. This paper introduces the theory of micro-crack group area to the metallogenic process of magmatic hydrothermal fluid deposit. The theory is that the closed zone of the earthquake combination model must be destroyed before next fault slip and the closed zone is the core of the micro-crack group area and related earthquake center area. The theory of micro-crack group area dose not reveal the seimogenic mechanism but also metallogenic process of magmatic hydrothermal fluid ore de- posit. During faulting emplacement of magmatic hydrothermal fluid is closely related to formation of the micro-crack group area. The stress field in the extent of ore body during mineralization is conjugate with the regional stress field. The micro-crack group area is closely related to the enrichment field of the miner- alization of magmatic hydrothermal fluid ore deposit and the ore controlling crypto-explosive breccia.
出处
《地质找矿论丛》
CAS
CSCD
2013年第4期535-539,共5页
Contributions to Geology and Mineral Resources Research
关键词
微裂群区
闭锁带
震源区
像力
岩浆热液
隐爆角砾岩
micro-crack group area
closed zone
earthquake center
image force
magmatic hydrothermal fluid
crypto-explosive breccia
