PSYC 2070 Chapter : Psych 2070 PP1
Document Summary
About sedimentation: sediments are produced on the earth"s surface as a result of weathering, sediments are transported and become sedimentary rocks after they come to rest, sedimentary rocks give evidence of ancient sedimentary environments where they formed. Processes forming detrital sedimentary rocks: weathering, erosion, transportation, deposition (sedimentation, burial and compaction, diagenesis. Dentrital sedimentary rocks: the chief constituents of detrital rocks include, clay minerals, quartz, feldspars, micas, particle size is used to distinguish among the various rock types. Texture in detrital sedimentary rocks: grain size, reflects energy, reflects transport distance, angularity of grains, sorting of grains. Different sediments result in different sedimentary rocks: mud shale, sand sandstone, gravel conglomerate. Chemical sedimentary rocks: consist of precipitated material that was once in solution, precipitation of material occurs by. Inorganic processes: organic processes (biological processes, common chemical sedimentary rocks, limestone, most abundant, composed chiefly of calcite, marine biochemical limestones form as coral reefs, coquina (broken shells), and chalk (microscopic organisms)
