摘要
通过工作，认为该区中生代构造体系以走滑构造为主，走滑断层在蓬家夼地区转换为拉张，在白垩纪莱阳组砾岩与下元古界荆山群变质杂岩之间形成一剥离断层，蓬家夼金矿产于该剥离断层内，为区内火山活动期间在大气水参与下形成的层间滑动角砾岩型金矿。通过对区内地质体变形特征的研究，认为蓬家夼金矿在三维空间上应呈倾向１５５°±１０°、倾角４５°±１０°的大的复式透镜体，可望成为大型金矿。
It is indicated that the structure in this area is characterized by NE-trending strike slip fault which was transformed into extension structure in the Pengjiakuang area and formed a detached fault between conglomerate of Cretaceous Laiyang Formation and metamorphic complex of Lower Proterozoic Jingshan Group which hosts the Pengjiakuang gold deposit. It is genetically a gold deposit hosted in conglomerate and concerning with meteoric water formed in volcanic period. The orebodies feature the large compplex lens dipping 155°+10° at angle of 45°+10°. The geology of the deposit indicates that it will be expected to be a large-sized gold deposit.
出处
《地质与勘探》
CAS
CSCD
北大核心
1998年第5期3-7,13,共6页
Geology and Exploration
关键词
金矿床
地质特征
找矿方向
走滑构造系
Pengjiakuang gold deposit, gold-bearing interstratified gliding conglomerate, transformation of structure, structural lense
