准噶尔盆地阜东斜坡区侏罗纪物源分析

利用研究区内各层段砂岩分区的类型、岩屑类型及含量变化、重矿物组合、砂岩百分含量、地震剖面上河道充填方向及地层倾角测井资料，综合判断准噶尔盆地车东斜坡区侏罗系各层段的主要物源方向、母岩类型及古水流方向。分析结果指出，下侏罗统八道河组-中侏罗统西山密组沉积期研究区以北部物源为主，母岩类型以基性喷出岩为主，变质岩次之，含少量中酸性喷出岩及沉积岩；中侏罗统头屯河组沉积期南部物源对研究区南部沉积区的控制作用加强，变质岩岩屑含量明显升高。

ANALYSIS OF JURASSIC SOURCES IN EAST FUKANG SLOPE OF JUNGGAR BASIN

Based on the comprehensive analysis of each section of sandstones, including petrological division, characteristics and content differentiation of debris, association of heavy minerals, percentage of sandstone, dip-log data and the channel-filling orientation on seisndc profile, the paleocurrent systems, rock types and orientation of the main sedimentary sources of the study area are determined. From the Badaowan period(J_1) to Xishanyao period(J_2), the main sedimentary sourees came from the north. The main rock types are basic eruptive rocks, and the minor are metaphormised rocks, with little netral-acid eruptive and sedimentary rocks. Since the beginning of the Toutunhe period(J_2), sedimentare source from south and southeast became prominent, with higher metaphondsed rock content.