论文部分内容阅读
为了预测评价古河谷的含铀性,必须不断完善找矿准则。在这方面有希望的途径之一是在分析预先决定古河谷展布的地史成因的基础上,查明和总结含矿古河谷形成的主要因素。由于中生代或最新的构造活化,由酸性岩浆岩组成的巨型隆起和穹隆构造的抬升是含矿古河谷形成的主要前提。古河谷成矿的另一个重要因素是发生在穹形断块活化之前的构造宁静、地形准平原化和形成风化壳的时期。古河谷成矿与主岩沉积在时间上十分接近,控矿的后生氧化作用是层间-潜水性质的。成矿结束后要有必要的保矿条件。
In order to predict and evaluate the uranium content of the ancient valley, we must continuously improve the prospecting criteria. One of the promising ways in this respect is to identify and summarize the main factors that led to the formation of the ore-bearing ancient river valley, based on the analysis of the geological causes that pre-determined the distribution of the ancient river valley. Due to the Mesozoic or the latest tectonic activation, the uplift of mega uplift and vault structure composed of acidic magmatic rocks is the main prerequisite for the formation of ore-bearing ancient valleys. Another important factor in the mineralization of the ancient valleys was the period of tectonic calm, terrain quasi-plagiarization and formation of weathering crust before the activation of the dome block. Ancient valley mineralization and the main rock deposition in time is very close to the post-oxidation of ore control is inter-submarine nature. Mineralization after the end of the necessary conditions.