安徽省区域地球化学场及其地质意义

Regional Geochemical Fields in Anhui Province and Their Geological Significance

安徽省区域地球化学场与区域构造有密切关系.北部Cu、Pb、Cr、Co地化场反映中朝准地台南缘碳酸盐岩台地沉积物与蛇绿岩或绿岩带的地化特征;大别山Cr、Ni、Cu地化场反映其具有岛弧特征;中部沿江 Cu、Pb异常场反映碳酸盐岩台地和岩浆热液矿质的叠加;南部Pb、V、Cr异常反映早古生代地层与蛇绿岩套的混合地化场.

Regional geochemical fields in Anhui province are closely related with regional tectonics respectively and manifest following characteristics: In northern area of this province geochemical fields of Cu, Pb, Cr and Co reflect the geochemical features of carbonatite terrace sediments and ophiolite or greenstone belt at the south margin of the Sino-Korean Para-platform; the geochemical fields of Cr, Ni and Cu in Dabieshan Mountains have an island-arc feature; the Cu and Pb anomaly fields along the Yantze river in the central part of the province give a responce showing the superimposition of carbonatite platform and magmatic-hydrothermal ore materials; and the Pb, V and Cr anomalies in the southern part of the province are the resultant fields of the early Palaeozoic rock formations and ophiolite suite.