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上围花岗岩岩体出露于江西省龙南县最南端,区域上处于闽赣后加里东隆起西南缘与湘桂粤海西-印支凹陷带的交汇部位,是南岭花岗岩带南亚带之贵东(-上围)-白沙-大坝近东西向花岗岩带的组成部位,位于产铀的贵东岩体东侧(周新民,2007)。岩体周缘仅有震旦系、泥盆系和白垩系分布,第四系冲积层在岩体内沿沟谷发育。泥盆系出露于岩体北东缘、东缘、南西缘,为一套长石石英砂岩、灰岩、砂页岩互层的复理石建造。上白垩统分布于岩体北西缘,为一套陆相、河湖相红色粗碎屑岩。上围岩体为燕山期
The upper porphyry granite is exposed at the southernmost tip of Longnan County in Jiangxi Province. It lies in the intersection of the southwestern margin of the Caledonian uplift and the belt of the western Hunan-Guangdong-Western Xiya-Indo-Fujian belt after the Fujian-Jiangxi region, East (- Upper Wai) - Baisha - Component of the near-to-east granite belt of the dam, located to the east of the Guidong body that produces uranium (Zhou Xinmin, 2007). Only Sinian, Devonian and Cretaceous distributed in the periphery of the rock mass. Quaternary alluvial layers developed along the valleys in the rock mass. Devonian system exposed in the northern margin of the rock, the eastern margin, the southern margin of the West, for a set of feldspar quartz sandstone, limestone, sand shale interbedded flysch stone. Upper Cretaceous distributed in the northern margin of the rock, as a set of continental facies, river and lake red coarse clastic rock. Rock mass on the wall for the Yanshan period