胶莱盆地地质解译及金矿床地质--地球物理-地球化学背景

从出露基底找金走向隐伏基底找金的新思路出发，对胶莱盆地内的地层、构造、岩浆岩运用物—化探信息和深钻资料给予深刻明晰的解译，发现其与胶北隆起区有着相似的地、物、化背景条件。指出胶莱盆地是座落在太古—元古宙基底之上的中新生代盆地，具有基底与盖层的双层结构，它们分别形成金矿的矿源层和衍生矿源层，展示了胶莱盆地的找矿前景。结合矿化信息以及典型矿床实例的地、物、化特点的解剖，指出矿化规律和控矿因素，建立了矿床地质一地球物理一地球化学找矿模型，并圈定了1：20万预测靶区以及靶区中可能出现的主要矿床类型，为进一步勘查工作指出了方向。

GEOLOGICAL EXPLANATION OF JIAOLAI BASIN AND GEOLOGICAL-GEOPHYSICS-GEOCHEMICAL BACKGROUND OF GOLD DEPOSITS

It has been found that Jiaolai Basin bears the similar geological, geophysical and geochemical background with Jiaobei rising zone according to the close explanation based on geophysical, geochemical and deep boring data of strata, structures and magmatic rocks within the basin from a new concept of gold exploration in concealed basement instead of in exposed basement. It is pointed out that Jiaolai Basin is situated in the Mesozoic to Cenozoic basin above the Archean to Proterozoic basement, which bears double layer structure of both the basement and the capping that formed a source bed and a deviated source bed respectively, showing strong prospecting potential of the Jiaolai Basin. The metallogeny and constraints of the mineralzation is pointed out, resulted in aii ore mineralogy-geophysical-geochemical exploration modei from the explanation of the geophysical and geochemical characteristics of the classic derposit cases and mineralization Information. 1:200000 scale predicting targets and the possible main deposit types have been outlined for further exploration.