东南沿海火山岩区地质找矿科技工作新进展

NEW ACHIEVEMENTS OF SCIENTIFIC RESEARCHES ON GEOLOGICAL PROSPECTING IN MESOZOIC VOLCANIC BELT OF THE SOUTHEAST COAST OF CHINA

本文介绍东南沿海火山岩区新—轮地质找矿科研工作阶段性成果一基本查明下扬子亚板块和华夏亚板块基底杂岩的差异、基底性质和成因以及地壳生长过程；总结了政和一大埔断裂带变形变质特征及其演化模式；分析并类比了主要构造—成矿区（带）控制区域成矿的地质条件．并以实际资料为依据提出了一批效矿靶区；新编了1：100万东南沿海地质图：建立了适合于储存中、大型矿床以及矿点地质信息的数据库．

This paper presents the stage achieverpents of key task scientific researches in the new round ofgeological prospecting work in the Mesozoic volcanic rock belt of the souhbet coast of China.The differences in characters of basement metamorphic complexes, natures and origins of basements and growth processes of the cruSt for Lower Yangtze subplate and Cathaysinn subplate havebeen ascertained; the deformation and metheorphism features and their evolution models ofZhenghe -Dapu fault zone have been summarised ; the geological settings controlling regional mineralisations in 11 main tectonomagmatic metallogenic bets have been analysed and analogized, andbasing on practical geological data, a number of prospectng targets for Au, Ag, CU, Pb, Zn de-peits have been proposed a new : 1000, 000 scale geologhal map of the southeast coast of Chinahas been compiled; moreover, 13 detabaas suitable for stotage of geologhal information of mediumand large scale mineral deposits or mineral occurrences and a System of datubase manasement havebeen estublished.