Sedimentary Facies and Provenance Analysis of Upper Triassic Goulushankecuo Formation in Tuotuohe Area of Qinghai Province
-
摘要: 通过野外实测地层剖面、沉积相标志识别、薄片鉴定和粒度分析等手段,研究了沱沱河地区三叠纪苟鲁山克措组的沉积相类型和沉积特征.结果表明苟鲁山克措组为一套三角洲-浅海陆棚体系.物源分析采用碎屑岩类法,研究表明工作区三叠纪砂岩多为长石岩屑砂岩和岩屑石英砂岩,结构成熟度和成分成熟度均较低,显示了沉积物快速堆积,近物源的特征.通过对碎屑矿物的成分分析,揭示其物源源于再旋回造山带.Abstract: Through field profile measuring, sedimentary facies signs identification, thin section authentification and grading analysis, we studied the categories and features of sedimentary facies of Upper Triassic Goulushankecuo Formation. The results show that the Goulushankecuo Formation is a Delta-Neritic shelf facies system. Based on clasolite petrographic study, the statistics from provenance analysis show that the sedarenite of Triassic Goulushankecuo Formation in workspace are mainly feldspathic litharenite and lithic quartz sandstone. Lower textural and compositional maturity indicates a rapid accumulation of sediments, which is a characteristic of nearby provenance. By detrital composition analysis, it is revealed that the provenance of Upper Triassic Goulushankecuo Formation came from recycled orogen.
-
Keywords:
- sedimentary facies /
- provenance analysis /
- Goulushankecuo Formation /
- Tuotuohe /
- Late Triassic
-
-
于炳松, 裘愉卓. 贵州地区新元古代—三叠纪沉积岩中稀土元素地球化学特征与地壳演化 [J]. 现代地质, 1998, 12(2): 173-179. Yu Bingsong, Qiu Yuzhou. Ree characteristics in neoproterozoic to triassic sed imentary rocks and its relation to crustal evol ution in Guizhou province [J]. Geoscience, 1998, 12(2): 173-179.
陈全红, 李文厚, 刘昊伟, 等. 鄂尔多斯盆上石炭统—中二叠统砂岩物源分析 [J]. 古地理学报, 2009, 11(6): 629-640. Cheng Quanhong, Li Wenhou, Liu Haowei, et al. Provenance analysis of sandstone of the upper Carboniferous to Middle Pormian in Ordos Basin [J]. Journal of Palaeogeography, 2009, 11(6): 629-640.
闫义, 林舸, 王岳军, 等. 盆地陆源碎屑沉积物对源区构浩背景的指示意义 [J]. 地球科学讲展, 2002, 17(1): 85-90. Yan Yi, Lin Ge, Wang Yuejun, et al. The indication of continental detrital sediment to tectonic setting [J]. Advance in Earth Sciences, 2002, 17(1): 85-90.
杜元生. 西秦岭造山带泥盆纪沉积地质学和动力沉积学研究: 西秦岭中带泥盆纪小型克拉通盆地的沉积特征及盆地格局 [J]. 岩相古地理, 1995, 15(5): 55-70. 江小燕, 刘永江, 周冰, 等. 大兴安岭南段兴-蒙草原区三叠纪砂岩物源分析 [J]. 地质通报, 2011, 30(7): 1085-1098. Jiang X Y, Liu Y J, Zhou B, et al. Aprovenance analysis of Permian sandstones in southern DaHinggan Mountains-Inner Mongolia steppe zone [J]. Geolegical Bulletin of China, 2011, 30(7): 1085-1089.
梁积伟, 肖丽. 鄂尔多斯盆地晚三叠世早期物源分析 [J]. 西北地质, 2008, 41(2): 81-86. Liang Jiwei, Xiao Li. Source analasis during the early late triassic in Ordos basin [J]. Northwestern Geology, 2008, 41(2): 81-86.
刘宝珺, 曾允孚. 岩相古地理基础和工作方法 [M]. 北京: 地质出版社, 1985: 271-276. 曾允孚. 沉积岩石学 [M]. 北京: 地质出版社, 1986. 王成善, 李祥辉. 沉积盆地分析原理与方法 [M]. 北京: 高等教育出版社, 2003. 姜在兴. 沉积学 [M]. 北京: 石油工业出版社, 2003. 青海省地质调查院. 1:25万可可西里湖幅区域地质调查报告 [R]. 2003. 青海省地质调查院. 1:25万沱沱河幅区域地质调查报告 [R]. 2005. 青海省地质矿产局. 青海省岩石地层 [M]. 武汉: 中国地质大学出版社, 1997. Dickinson W R, Suczek C A. Plate tectonics and sandstone composition [J]. AAPG B, 1979, 3: 2164-2182.
Dickinson W R, Beard L S, Brakenridge G R, et al. Provenance of North American Phanerozoic sandstones in relation to tectonic setting [J]. Bull. Geo. Soc. Amer., 1983, 94: 222-235.
计量
- 文章访问数: 2838
- HTML全文浏览量: 0
- PDF下载量: 3346
下载:
