沉积学报2011，Vol.29Issue(5)：835-841,7.
重矿物资料在沉积物物源分析中的应用——以涠西南凹陷古近系流三段下亚段为例
Application of Heavy Mineral Data in the Analysis of Sediment Source：A case study in the Paleogene lower submember of the third member of the Liushagang Formation,Weixinan Depression
摘要
Abstract
Heavy mineral data are widely used in the analysis of sediment source.Source rocks of different depositional stages and different source areas can be identified based on heavy mineral suites.In this study using Q-type clustering analysis,the sample group with the same or similar features in the vertical profile is identified as sediments of the same depositional stages,so each sample group is representative of a certain depositional stage or source rock.On the basis of Q-type clustering analysis,using R-type clustering analysis,the differences among each kind of heavy mineral are available in the same depositional stage,and different heavy mineral suites are defined.The same heavy mineral suite is considered that it comes from the same source rock,and the different heavy mineral suites are used to recognize different source areas.These,the sediments with features of the same depositional stage and the same heavy mineral suite are as an independent system.Coupled with the independent system’s ZTR maps,allow robust identification of specific directions of sediment source in each depositional stage.The integrated data set shows that there are four distinct sediment sources in the submember in the study area.These are the northwest source,the southwest source,the northeast source,and the east source.The directions of different sediment sources identified are in accordance with the main building directions of fans delta or alluvial fans.Using heavy mineral suites generated from cluster analysis to identify source area in the Weixinan Depression is quite effective.关键词
重矿物/ZTR指数/聚类分析/物源/涠西南凹陷Key words
heavy mineral/ZTR maturity index/cluster analysis/provenance/Weixinan Depression分类
天文与地球科学引用本文复制引用
操应长,宋玲,王健,李俊良,刘明全,方勇..重矿物资料在沉积物物源分析中的应用——以涠西南凹陷古近系流三段下亚段为例[J].沉积学报,2011,29(5):835-841,7.基金项目
国家重大科技专项课题 （）
教育部新世纪优秀人才支持计划（编号：NECT-06-0604）资助 （）
