江西龙南-石城地区干热岩资源优选  

Optimal selection of hot dry rock resources in Longnan-Shicheng area,Jiangxi Province

作　　者：张福神 陈艳 龙立学 徐荣华 潘隆虎 Zhang Fushen;Chen Yan;Long Lixue;Xu Ronghua;Pan Longhu(Basic Geological Survey of Jiangxi Geological Survey and Exploration Institute,Nanchang 330030,Jiangxi,China;Jiangxi Nonferrous Geological Mineral Exploration and Development Institute,Nanchang 330030,Jiangxi,China;Mineral Exploration of Jiangxi Geological Survey and Exploration Institute,Nanchang 330030,Jiangxi,China)

机构地区：[1]江西省地质调查勘查院基础地质调查所,江西南昌330030 [2]江西有色地质矿产勘查开发院,江西南昌330030 [3]江西省地质调查勘查院矿产勘查所,江西南昌330030

出　　处：《地质学刊》2024年第2期210-218,共9页Journal of Geology

基　　金：江西省地质项目“江西省龙南—石城地区干热岩资源调查评价”(2022HYN10)、“江西省龙南市南部干热岩资源综合地球物理勘查”(2024HYN05)。

摘　　要：通过总结前人的研究成果,划分出江西3种类型干热岩潜力区:燕山期含高放射性产热型花岗岩出露区、燕山期火山岩区(火山岩盖层+燕山期高放射性产热型隐伏花岗岩)、白垩系红盆区(沉积岩盖层+燕山期高放射性产热型隐伏花岗岩)。结合地质、地热、物探和遥感等方法,选定江西龙南南部、安远、信丰、周田和石城5个干热岩潜力区。在最具干热岩潜力的龙南南部地区开展大地电磁测深工作,推断深部发育3处隐伏花岗岩岩体。依据地质、物探和遥感成果圈定干热岩远景区面积298.44 km^(2),保守估算4.6~8.0 km深度的静态干热岩潜在资源总量为220.35×10^(18)J,折算成标准煤为75.28亿t。This study summarizes the previous research results and puts forward three types of dry hot rock potential areas in Jiangxi:Yanshanian high-radioactive heat-producing granite outcropping area,Yanshanian volcanic rock area(volcanic caprock+Yanshanian high-radioactive heat-producing hidden granite),and Cretaceous red basin(sedimentary caprock+Yanshanian high-radioactive heat-producing hidden granite).By means of geology,geothermal,geophysical prospecting and remote sensing,five hot dry rock potential areas in the Longnan South,Anyuan,Xinfeng,Zhoutian and Shicheng in Jiangxi Province were selected.Magnetotelluric bathymetry was carried out in the southern area of Longnan,where there are the most potential,and it is inferred that three hidden granite rock masses have developed in the depths.According to the results of geology,geophysical prospecting and remote sensing,the delineated area of the hot dry rock prospect area is 298.44 km^(2),and the total potential resources of static hot dry rock at a depth of 4.6-8.0 km are conservatively estimated to be 220.35×10^(18)J,which can be converted into standard coal of 7.528 billion tons.

关 键 词：干热岩 潜力区 优选标准 遥感 物探 江西龙南—石城 

分 类 号：P314.9[天文地球—固体地球物理学]