This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: GLG111 Study Guide Spring 2009 Chapter 7: Sediment and Sedimentary Rocks, p. 168-201 Define the following terms: Sediments: sand, gravel, mud, fossils Sorting: a measure of the variation in the range of grain sizes in a rock or sediment Degree of roundness: the process by which the sharp corners and edges of sedimentary particles are abraded during transport Diagenesis: chemical or physical process that changes sediment from loose to solid rock Lithification: hardening of sediment into rock- Cementation: chemical precipitation of mineral material between grains, binds sediment into hard rock. Chemicals act as glue (SiO2=quartz, CaCO3=calcite, Fe2O3=hematite)- Compaction: grains squeezed by the weight of overlying sediments, reduces pore space Sedimentary rock: rock composed of sediment Grain Size:- Coarse- Medium- Fine Clastic sedimentary rocks: physically transported rock fragments produced by the weathering of existing rocks Conglomerate: coarse (large) constituent particles Sandstone: medium sized sediment particles...
View Full Document
- Spring '05
- Sedimentary rocks, Clastic sedimentary