山东国土资源2024，Vol.40Issue(1)：9-17,9.DOI:10.12128/j.issn.1672-6979.2024.01.002
胶东地区重磁场特征及地质解释
Gravity-Magnetic Field Characteristics and Geological Interpretation in Jiaodong Area
摘要
Abstract
In this paper,physical parameters,such as magnetic susceptibility,residual magnetization and density of various strata and magmatic rocks in Jiaodong area in Shandong province have been counted sys-tematically.Characteristics of regional heavy magnetic have been analyzed from the aspects of geology and physical properties.It is showed that the overall trend of gravity and magnetic field is NE-NNE,which reflects the stratigraphic distribution,tectonic framework and magmatic activity in Jiaodong area.The in-tensity of gravity field varies greatly ranging from-40×10-5m/s2 to 40×10-5 m/s2.The gravity is low in the north and south of Jiaolai basin,and the gravity is high inside the basin.The magnetic field is mainly low magnetic field,the magnetic field intensity is low and the change is small in the north and middle.The magnetic field intensity is high and large in the southeast.The characteristics of the heavy magnetic field in Jiaodong area reflect that the magma activity in the southern and northern parts of the area is strong,and the middle crust is thin.The basement structure is EW direction,the local structure is NE direction,and the old crystalline basement with higher density and strong magnetism is zoned.关键词
磁化率/剩余磁化强度/密度/布格重力异常/磁异常/胶东地区Key words
Magnetic susceptibility/remanent magnetization/density/Bouguer gravity anomaly/magnetic anomaly/Jiaodong area分类
天文与地球科学引用本文复制引用
伊飞,马丽新,高莲玉,董健,胡韬,王金辉..胶东地区重磁场特征及地质解释[J].山东国土资源,2024,40(1):9-17,9.基金项目
科技部,国家重点研发计划"深地资源勘查开采"重点专项(2016YFC0600100) （2016YFC0600100）
地调项目:山东省自然资源厅,胶西北地区金矿成矿作用研究及深部成矿预测(鲁勘字[2021]18号) （鲁勘字[2021]18号）
