Analysis of cause characteristics of Pisha-sandstone in Mu US Desert — Based on Sedimentary Environment Perspective

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Cao, Shiliu^1,2,3,4

Shaan Xi Provincial Land Engineering Construction Group Co. Ltd., China^1

Inst. of Land Eng. and Technology Shaanxi Provincial Land Engineering Construction Group Co. Ltd, China^2

Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources of China, China^3

Shaan Xi Provincial Land Engineering Consolidation Engineering Technology Research Center, Xi'an

710075, China^4

关键词: Clastic rock;    Erosion characteristics;    High plasticity;    Rock composition;    Sedimentary environment;    Sedimentary evolution;    Simple structures;    Thick layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022179/pdf
DOI  :  10.1088/1755-1315/170/2/022179

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Pisha-sandstone, located in the southeastern margin of the Ordos Basin, which is the thick sandstone, sand shale and argillaceous sandstone interbedded rocks of Paleozoic Permian Triassic and Jurassic Cretaceous Mesozoic, mainly composed of continental clastic rock. The study found that when the hard Pisha-sandstone are anhydrous water, such as sludge, vulnerable to erosion characteristics which due to its good permeability, high plasticity index, good hydrophilicity. From the micro perspective, the rock composition has mainly the quartz that due to its simple structure, low degree of cementation, poor construction strength. In addition, through the analysis of Pisha-sandstone lithic-facies characteristics, composition, characteristics of sedimentary evolution in the various strata of Paleozoic and Mesozoic, to restore Pisha-sandstone formed in different sedimentary environment during the period, in order to explain the causes of the different thick layer of Pisha-sandstone.