利用重力异常研究虎林盆地的构造分区和基底形态.pdfVIP

37 ( ) Vol. 37Su . 2007 11 Journal of Jilin University(Earth Science Edition) Nov . 2007 利用重力异常研究虎林盆地的构造 分区和基底形态 刘银萍, 孟令顺 , 130026 : 首先应用MATLAB 语言, 编制了多边形法计算基底界面深度的程序, 计算了一条基底界面深 度。以区域地 资料和物性资料为依据, 对黑龙江省虎林市幅1 ∶20 万重磁场进行了综合分析。根据虎林 盆地布格异常和区域场特征, 结合重力异常和航磁异常等综合资料, 按结晶基底起伏状态, 将虎林盆地划 分为3 个隆起区, 2 个凹陷区。应用Sufer 软件以及3D 成图技术恢复出盆地基底起伏界面全貌。 : 虎林盆地; 重磁场特征; 断裂; 结晶基底 : P631. 1　　　　:A Using Gravity Anomaly Study Structure Division and Basement Morphology of the Hulin Basin LIU Yin- ing, MENG Ling-shun Co ll eg e of G eoE xp l or atio n S ci ence and Tec hnol ogy , J i li n Univ er si ty , Changchun 130026, China Abstract: The a er first a ly MATLAB language rogramming a rocedure of calculating the de th of interface basement and calculates the de th of one basement interface. A com rehensive 1200 000 - analysis is made on the characteristics of gravity and magnetic anomaly on ma area of Hulin City in Heilongjiang Province according to the geological and geo hysical data. According to the characteristic of Bouguer gravity and regional gravity anomaly , and by the study of synthetic data of aero-magnetic and gravity anomalies and the sha e of crystallization base, the Hulin Basin w as marked , . . . - three u lifts and tw de ressions i e structural units The technology of three dimension w as also used to recover the entire base by Sufer. Key words: Hulin Basin; characteristic of gravity and magnetic anomalies; fracture; crystalline base; , 0