GEOL 1001 Chapter : Sedimentary Rocks
Document Summary
Sources of fe, al, and mn: rock types are based on the source of the material, detrital rocks transported sediment as solid particles, chemical rocks sediment that was once in solution. Processes forming detrital sedimentary rocks: weathering, erosion, transportation, deposition (sedimentation, burial and compaction, diagenesis. Detrital sedimentary rocks: the chief constituents of detrital rocks include: clay minerals, Texture in detrital sedimentary rocks: grain size, sorting of grains, angularity of grains. Chemical sedimentary rocks: consist of precipitated material that was once in solution, precipitation of material occurs by: Organic processes (biochemical origin: common chemical sedimentary rocks. Limestone most abundant chemical rock, comprised chiefly of the mineral calcite, marine biochemical limestones form as coral reefs, coquina (broken shells), and chalk (microscopic organisms) Chert microcrystalline quartz, varieties include flint and jasper. Evaporites evaporation triggers deposition of chemical precipitates, examples include rock salt and rock gypsum. Coal different from other rocks because it is composed of organic material, stages in coal formation 1.
