CAJ | 학술논문

浙江省丽水市关塘―蛤湖地区位于江山―绍兴拼接带与余姚―丽水深断裂之间的变质基底隆起区，成矿地质条件较好。为研究区内基底构造形态、火山构造、隐伏岩体等基础地质问题，开展了1∶5万重力调查。重力成果表明，西岱―西溪―季岱梯级带为基底断陷与隆起区的界线，剩余重力正异常为基底隆起的反映，负异常为基底凹陷的反映。区内矿产分布与基底构造关系密切，变质热液型铅锌、多金属矿多分布在变质基底出露区，金银矿多位于基底浅覆盖区，基底凹陷区内多金属矿与侵入岩或火山构造有关。综合地质物化探资料，圈定5个成矿远景区，为区内地质找矿工作的部署提供了地球物理依据。
절강성려수시관당―합호지구위우강산―소흥병접대여여요―려수심단렬지간적변질기저륭기구，성광지질조건교호。위연구구내기저구조형태、화산구조、은복암체등기출지질문제，개전료1∶5만중력조사。중력성과표명，서대―서계―계대제급대위기저단함여륭기구적계선，잉여중력정이상위기저륭기적반영，부이상위기저요함적반영。구내광산분포여기저구조관계밀절，변질열액형연자、다금속광다분포재변질기저출로구，금은광다위우기저천복개구，기저요함구내다금속광여침입암혹화산구조유관。종합지질물화탐자료，권정5개성광원경구，위구내지질조광공작적부서제공료지구물리의거。
Lying in side the metamorphic basement uplift area between Jiangshan-Shaoxing suture belt and Yuyao-Lishui deep fracture,Guantang-Gehu area has relatively favorable metallogenic and geological condi-tions.The gravity survey at the scale of 1 ∶50000 is performed to research on the basic geological issues, such as basement structures and morphologies,volcanic structures,and concealed rock bodies in the area. The research findings indicat that Xidai-Xixi-Jidai gradient zone is the boundary line between basement fault depression and uplifted area.Positive residual gravity anomalies are reflection of basement uplift,while neg-ative anomalies are reflection of basement depression.The distribution of ore minerals in the area is closely related to basement structure:the metamorphic hydrothermal type Pb-Zn and polymetallic deposits mostly occur in the metamorphic basement outcropped area,and the Au-Ag deposits in the basement shallow over-lay area,and the polymetallic deposits(related to intrusive rock or volcanic structure)in basement depression area.In consideration of the geological,geophysical and geochemical data,the author blocks out 5 ore-form-ing prospect areas and provides geophysical basis for planning of geological prospection works in the area.