准噶尔盆地哈山南缘下侏罗统重矿物特征及地质意义

详细信息

Lower Jurassic heavy minerals from southern Mt. Hala'alate, Junggar Basin: Characteristics and geological implications

Research Center of New District in Western China, Shengli Oil Field, SINOPEC, Dongying 257015, Shangdong, China

摘要: 通过对重矿物组分、组合特征及其稳定系数、ZTR指数等资料的分析,认为准噶尔盆地哈山南缘存在西北方向两个不同母岩区物源,母岩以中性及基性岩浆岩为主,其中偏北物源母岩含有变质岩特征。早侏罗世气候温暖潮湿,雨量充沛,以洪水作用的冲积扇沉积为主。哈山侏罗系沉积时期,八道湾组沉积时期的构造活动强于三工河组沉积时期,最强烈的构造活动时期发生在早白垩世沉积前。
- 准噶尔盆地 /
- 哈拉阿拉特山 /
- 重矿物 /
- 物源 /
- 沉积环境
Abstract: The integration of compositions, assemblages, and their stable coefficients, ZTR index of the heavy minerals has disclosed that there are two NW-trending source areas of the parent rocks from southern Mt. Hala'-alate, Junggar Basin. The parent rocks dominantly consist of intermediate and basic magmatic rocks, and those from the north are characteristic of metamorphic rocks. The steep slope features and plentiful seasonal floods in the study area during the Early Jurassic facilitated the formation of the alluvial deposits. During the deposition of the Jurassic deposits, the tectonism exhibited a more severe trend in the Badaowan Formation than in the Sangonghe Formation, and a culmination prior to the deposition of the Early Cretaceous deposits.
- Junggar Basin /
- Mt. Hala'alate /
- heavy mineral /
- source area /
- sedimentary environment