EAS 2600 Lecture 9: Sedimentary Rocks
26 Mar 2021
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Lecture nine: f finishing up volcanoes h y. H volcanic pipes . short conduits that connect a magma chamberto (cid:15482) volcanic necks . the surface. Forms from pediment (weathered products: n"75 "t of all rock outcrops on the continents are nedimehtaly. Economically important - coal , iron deposits. * physical weathering - breaking rock into smaller pieces. * chemical weathering - rainwateretc . dissolving rock . * diagenesis cd after burial - cementation ) rivers & other water masses . itlirficatrin - turning loose sediment into a wet . kinds of sediments. Biological formed w/ help of organisms cruella , teeth) one group . Chemical 1biological (cid:8869) material that once was in solution &precipitates ( to form sediment carbonate ( e cf u r e w i w e rocks. Sedimentary current khength & distance of transport effect. Mire of particles: shape of particles - sharp edges ? longerdistance transported makes rocks smoother , porting (variation of sites)
