济阳坳陷花沟地区火成岩重磁成像解释方法  

A method of inversing igneous rock by gravity and magnetic imaging in Huagou area of Jiyang depression

作　　者：刘展[1] 班丽[1] 魏巍[1] 王万银[2] 郭加树[1] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061 [2]长安大学地质工程与测绘工程学院,陕西西安710054

出　　处：《中国石油大学学报（自然科学版）》2007年第1期30-34,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家"973"项目(2002CB412404)

摘　　要：提出了基于单相关系数搜索的变形的n维黄金分割算法的重磁成像方法，并利用该方法反演了济阳坳陷花沟地区的视密度与视磁化强度的三维空间分布，据此结合钻井、磁力和重力异常图对该地区火成岩的三维空间分布进行了推断。花沟地区共推断出42个酸性火成岩和33个基性火成岩，并按200m的深度间隔分11层编制了深度为900～2900m内各层上的火成岩深度切片图，其结果较好地展示了该区火成岩的空间分布。A method of gravity and magnetic imaging by a n-dimensional golden section algorithm based on variational singlecorrelation coefficient search was presented, and the method was applied to inverse virtual density and magnetization in Huagou area of Jiyang depression. From the imaging results, the 3-D distribution of igneous rock was deduced, which are 42 acidic igneous rocks and 33 basic igneous rocks. For showing them, slice maps of igneous rocks were made in 200 m interval from 900 to 2 900 m danth. The results reveal the space distribution of igneous rock of the area.

关 键 词：济阳坳陷 花沟地区 火成岩 重磁成像 视密度 视磁化强度 分布特征 

分 类 号：P631.443[天文地球—地质矿产勘探]