史家地区地球物理特征浅析

A Brief Analysis of Geophysical Characteristics in Shijia Area

史家地区地处招(远)平(度)断裂和牟平--即墨断裂(桃村断裂)之间。历经多次构造运动,地质构造复杂。区内广泛分布以中--基性喷发为主的火山沉积建造、胶东岩群、同期侵入的TTG质片麻岩为玄武质岩浆分异产物与之后形成的古元古代荆山群、粉子山群地层一起构成区内初始矿源层。本文主要对史家地区地球物理特征展开探讨,旨在为区内找矿提供参考。

The Shijia area is situated between Zhao (far) Ping (degree) fault and Mouping-Jimo (Taocun) fault. After many tectonic movements, the geological structure is complex and the magmatic activity is frequent. Volcanic sedimentary formations dominated by intermediate-basic eruptions, Jiaodong Group and TTG gneiss intruded in the same period are widely distributed in the area, which are the products of basaltic magma differentiation. The strata of Paleoproterozoic Jingshan Group and Fanzishan Group formed thereafter constitute the initial source beds in the area. This paper mainly discusses the geophysical characteristics of Shijia area in order to provide reference for prospecting in this area.