沉积学报2017，Vol.35Issue(4)：705-713,9.DOI:10.14027/j.cnki.cjxb.2017.04.005
吐哈盆地大河沿地区塔尔朗组细粒沉积岩特征
Characteristics of Fine-grained Sedimentary Rocks in Taerlang Formation, Daheyan Area, Turpan-Hami Basin
摘要
Abstract
With the technologies of field outcrop section description, identification of thin sections, whole rock X-ray diffraction(XRD)analysis and trace element analysis, researchers have studied mineral components, sedimentary structures, rock types and sedimentary environment of fine-grained sedimentary rocks in Taerlang Formation , Daheyan Area.The results reveal that fine-grained sedimentary rocks are mainly composed of quartz and calcite, and still contain a small amount of feldspar and clay minerals.The types of sedimentary structures contain normal graded bedding, flaser bedding, cross-beddings structure under the strong hydrodynamic and laminated structures under static water environment.It develops carbonate rocks, felsic rocks and fine-grained mixed rocks, and it is divided into 5 types of lithofacies based on factors of color, mineral composition and sedimentary structure, including grey thin-layered mixed fine-grained lithofacies, deep-black laminated clay lithofacies, grey laminated mixed fine-grained lithofacies, grey thin-layered siltstone lithofacies, and off-white laminated limestone lithofacies.The period of fine-grained sedimentary rocks was warm and humid, which belong to quiet, reductive, semi-salt and salt basin.关键词
细粒沉积岩/岩相特征/沉积构造/大河沿地区Key words
fine-grained sedimentary rocks/lithofacies features/sedimentary structure/Daheyan area分类
天文与地球科学引用本文复制引用
徐希旺,陈世悦,王越,张关龙,鄢继华,汪誉新,李佳,邓远..吐哈盆地大河沿地区塔尔朗组细粒沉积岩特征[J].沉积学报,2017,35(4):705-713,9.基金项目
国家自然科学基金项目(41072164)National Natural Science Foundation of China, No.41072164 （41072164）
