试验四(师长教师)熟悉罕见的聚积岩(国外英文资料).docVIP

实验四(学生)认识常见的沉积岩(国外英文资料) Experimental four common sedimentary rocks One, the purpose of the experiment The method of observing and describing the color, structure and structure of sedimentary rocks. Understanding the naming of sedimentary rocks and naming common sedimentary rocks. 3, learn to the naked eye identification method of sedimentary rocks, deepen the understanding of the sedimentation process and sedimentary rock formation environment, grasp the identification characteristics of clastic rocks, carbonate rocks. Experiment equipment Experiment tools: magnifying glass, ruler, knife, and rare hydrochloric acid Experimental specimens: breccia, quartz sandstone, breccia, siltstone, mudstone, calcareous shale, dolomite, mudstone, limestone Third, experimental content Sedimentary rocks are divided into: clastic rocks, chemical and biochemical rocks, and special sedimentary rocks. (1) clastic rock 1, color Refers to the overall color of the surface of the sedimentary rock, not the color of a single mineral. The rock is named after the standard chromatography or physical comparison method. Structure of 2. (1) clastic texture: the clastic texture is the structural type of the clastic rock class. According to the size of the clastic particle size, (2) degree of grinding: the degree of grinding of a particle by the naked eye or with a magnifying glass. It is divided into five levels (angular, subangular, round, round, and round). The observation of the grinding degree is that the rock in the middle sand and the granule is greater than the middle sand. 3, The structure of sedimentary rocks refers to the spatial distribution and arrangement of materials in sedimentary rocks. It is divided into stratified structure, layer structure, tuberculosis, biological fossils and block structure. Bedding structure: (1) in the process of deposition, the sedimentary rocks due to climate, seasonal changes in sediment in the vertical direction, due to the different composition, color, s