论文部分内容阅读
在板块构造开始用于解释各种矿产尤其是各种金属矿床分布规律时,人们首先想到的是板块边缘,特别是对铀矿床的控制作用来说,只限于会聚性板块边缘(如火山岩型、花岗岩型及砂岩型等铀矿,都被认为是分布在仰冲板块一侧);就成矿时代来说,仅限于中生代与新生代板块活动时期。近几年来,随着板块构造研究的不断深入,地质学家与矿床学家对大陆内部(板内)的矿床分布与前寒武纪时期矿化特征等规律,都能逐步地应用板块构造理论统一作出解释。由于各个不同地质时代板块活动特征各异,尤其是太古代和早,中元古代板块活动悬异,加上当时特殊的大气缺氧环境,形
When plate tectonics began to be used to explain the distribution of various minerals, especially various metal deposits, the first thing that people think of is plate tectonics. In particular, the control of uranium deposits is confined to the edges of convergent plates (such as volcanic rocks, Granite-type and sandstone-type uranium deposits, are considered to be located in the side of the Yangchong plate); For the mineralization era, only in the Mesozoic and Cenozoic plate period of activity. In recent years, with the deepening of tectonic researches, geologists and mineralogists can gradually apply the tectonic theory of plate tectonics to the distribution of the intracontinental (intraplate) mineralization and the Precambrian mineralization and other laws Unified explanation. Due to the different characteristics of the activities of the plates in different geological times, especially the Archean and early Proterozoic plate hanging activities, coupled with the then special atmospheric hypoxia environment,