过去十年中对中怀俄明格拉尼特山的花岗岩类岩石进行了广泛研究,这是因为它们可能与围绕该山脉砂岩中的第三纪铀矿床有原源联系。对格拉尼特山最初的同位素研究是全岩U-Th-pb体系研究,结果表明花岗岩为太古代年龄,地表样品在第三纪中遭受大量铀丢失。后来的研究表明,在整个地区地表样品有80％的铀丢失,且铀丢失深度超过400米。这些研究 The granite-like rocks of the Wyoming Granite Mountains have been extensively studied over the past decade as they may have an original connection with Tertiary uranium deposits in the sandstone of the range. The initial isotopic study of the Granit Hills is a U-Th-Pb system of all-rock study. The results show that the granites were of Archean age and the surface samples suffered large amounts of uranium loss during the Tertiary. Later studies showed that 80% of the uranium was lost in surface samples over the entire region and that uranium lost more than 400 meters. These studies