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几个重要金属矿床类型在分布上的系统时代变异反映着大陆周期性的聚合和裂解,尤其是形成于大陆盆地内或与非造山岩浆活动有关的金属矿床,主要集中于中元古代(2.0-1.4Ga),即第一个“大陆群”聚合的时代。须注意的是,大陆金属矿床发育的顶峰正好与推测的晚元古代超大陆相重合(1.0-0.8Ga),即近于联合古陆的最大范围,而形成或保留于会聚边缘造山带的金属矿床则主要分布于晚太古代(2.9-2.6Ga),此时相应的为地球高热流和大陆壳迅速稳定的时期。过去的200Ma,则与现在的构造旋回相对应,相似的成矿作用尽管少但依然发育于早元古代、晚元古代和显生宙的造山带中。认识这些旋回尤其是前寒武纪岩石记录中的旋回,运用层序地层学将有助于未来的金属矿床勘查,这在石油工业中的应用已得到了证实。
The systematic epoch variations in the distribution of several important metallogenic deposits reflect the periodic polymerisation and cracking of the continent, especially the metallogenic deposits formed in the continental basin or related to the non-orogenic magmatism, mainly in the Mesozoic (2.0- 1.4Ga), the first “continental group ” polymerization era. It should be noted that the peak of the development of the continental metal deposits just coincides with the supposed Late Proterozoic supercontinent (1.0-0.8Ga), which is close to the maximum range of the associated ancient continent and the metal formed or retained in convergent marginal orogenic belt The deposits are mainly distributed in the Late Archean (2.9-2.6Ga), corresponding to the period when the earth’s high heat flux and the continental crust are rapidly stabilized. The past 200Ma corresponds to the present tectonic cycles. Similar metallogenic processes are still developed in the Early Proterozoic, Late Proterozoic and Phanerozoic orogenic belts. Recognizing these cycles, especially the cycles of Precambrian rock records, the use of sequence stratigraphy will facilitate the prospecting of future metal deposits, which has been demonstrated in the oil industry.