作　　者： ; ; ; ; ;

机构地区： 西北大学地质学系大陆动力学国家重点实验室

出　　处： 《西北大学学报（自然科学版）》 2007年第2期297-300,305,共5页

摘　　要： 目的探讨古盆地沉积边界的确定方法。方法从大量的地质资料入手,利用碎屑重矿物组合、粗碎屑组分和矿物成熟度3种参数确定古盆地边界。结果确定了碎屑岩的碎屑重矿物组合、粗碎屑组分和矿物成熟度的特征及其随着搬运距离的不同而变化的规律,探索性地恢复了古盆地的沉积边界。结论沉积物从物源区到盆地搬运沉积过程中发生有规律的变化。确定古盆地原始沉积边界位置的方法,是进行沉积盆地定量化研究的有效方法。 Aim To discuss the method of ascestaining the basin sedimentary boundaries. Methods Using the three parameters of heavy mineral assemblage of detrital rock , coarse fragment component and mineralogic maturity, the basin sedimentary boundaries will be foun and studied. Results This article gives a detailed research of the characteristics of the heavy mineral assemblage of detrital rock , coarse fragment component , mineralogic maturity and the appearance of their changes according to different transport distance, the basin Sedimentary boundaries are exploringly restored. Conclusion The deposit is regularly changed from provenance to basin along with its transported deposit. Determination of sedimentary boundaries is the effective methord for quantitative research on sedimentary basin.

关 键 词： 重矿物 粗碎屑 矿物成熟度 沉积边界

领　　域： [石油与天然气工程]