试论航磁异常与北疆裂谷系  

ON AEROMAGNETIC ANOMALY AND RIFT SYSTEM IN NORTHERN XINJIANG

作　　者：王宜昌[1] 

机构地区：[1]石油地球物理勘探局,河北涿州072751

出　　处：《新疆石油地质》1997年第4期295-301,共7页Xinjiang Petroleum Geology

摘　　要：北疆裂谷系包括准噶尔、吐哈、伊犁三大盆地以及它们之间的部分山区.东西总长1200km,南北宽约400km,面积约25×10~4km^2.三个盆地被天山山系分割各在一方.但是航磁异常图却将三个盆地连结在一起,组成一个复杂的“三联式”强磁异常带.从异常特征及沉积建造分析,它很可能是北疆晚古生代裂谷系的反映.Rift system in northern Xinjiang includes Junggar, Turpan - Hami, Ili basins and some mountainous area among them, with length of 1 200 km in EW direction, width of 400 km in NS direction, the area of 25×104 km2. These basins are seperated by Tianshan mountains system, but three basins connected by aeromagnetic anomaly map, and formed a complex 'trifurcate' strong magnetic anomaly belt. According to analyses of anomaly characteristics and sedimentary formation, it might be a reflection of Late Paleozoic rift system in northern Xinjiang.

关 键 词：航磁勘探 准喝尔盆地 油气勘探 裂谷带 航磁异常 

分 类 号：P618.130.8[天文地球—矿床学] P631.222[天文地球—地质学]