加拿大西加盆地中西部重磁异常及构造特征  

Gravity and Magnetic Anomalies and Tectonic Features of the Central and Western Region of the Western Canada Basin in Canada

作　　者：张春灌 廖炜诺 张法世 贺高峰 黄姗 ZHANG Chun-guan;LIAO Wei-nuo;ZHANG Fa-shi;HE Gao-feng;HUANG Shan(School of Earth Sciences and Engineering and Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’ an Shiyou University, Xi’ an 710065, China)

机构地区：[1]西安石油大学地球科学与工程学院,陕西省油气成藏地质学重点实验室,西安710065

出　　处：《西安文理学院学报（自然科学版）》2021年第1期91-95,共5页Journal of Xi’an University(Natural Science Edition)

基　　金：陕西省自然科学基础研究计划资助项目(2017JM4007);陕西省大学生创新创业训练计划项目(S201910705011)联合资助。

摘　　要：为了深入研究加拿大西加盆地中西部重磁异常及构造特征,利用滑动平均方法对布格重力异常及磁力化极异常进行了异常的分解,获取了西加盆地中西部地区剩余重力异常及剩余磁力异常.结合已有的地质研究成果,对重力异常及磁力异常特征进行了深入分析,探讨了本区断裂构造分布特征.研究结果表明,研究区剩余重力异常及剩余磁力异常具有明显的分区性,大致以大卡什-欣顿-卡尔加里一线为界,分为西南和西北2个异常区,分别对应落基山构造带和西加盆地2个构造单元.研究区主要发育北东向、北西向、近南北向、近东西向等4组断裂.In order to study the gravity and magnetic anomalies and tectonic features of the central and western region of the western Canada basin,the Bouguer gravity anomaly and the aeromagnetic anomaly by reduction to the pole are resolved by using the moving average method,and the residual gravity anomaly and the residual magnetic anomaly in the study area are obtained.Combined with the existing geological studies,the features of the gravity anomaly and the magnetic anomaly are analyzed,and the distribution features of the fault structures are discussed.The results showed that the residual gravity anomalies and the residual magnetic anomalies are obvious zoning.Bounded by the Grande Cache-Hinton-Calgary area,the gravity anomalies and the magnetic anomalies are divided into two anomaly regions,the southwest anomaly region and the northwest anomaly region,corresponding to the Rocky Mountain tectonic belt and the western Canada basin.There are four groups of faults extending Northeast,Northwest,near South-North,and near East-West in the study area.

关 键 词：断裂构造 重力异常 磁力异常 西加盆地 

分 类 号：P54[天文地球—构造地质学]