24 - GSC 3/22/2008 12:30:00 AM Sedimentary Rock Rock formed...

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GSC 21/03/2008 23:30:00 Sedimentary Rock  Rock formed at or near earth’s surface from fragments or dissolved  constituents of pre-existing rocks …. 1.  clastic sedimentary rocks rock fragments (sediments) cemented together sediment      …       rock gravel or larger       conglomerate sand                       sandstone mud/clay                shale Gold     Precipitates w/ quartz in veins associated w/ silicic magmas nuggets in placer  deposits Process of extracting gold from ore veins uses  mercury or cyanide, both of  which are highly toxic when released into the environment 2.  Chemical sedimentary rock  rocks formed by  precipitation of minerals  out of water solutions a. evaporites formed from evaporation of salty water
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This note was uploaded on 04/07/2008 for the course GSC 106 taught by Professor Dr.hood during the Spring '08 term at University of Miami.

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24 - GSC 3/22/2008 12:30:00 AM Sedimentary Rock Rock formed...

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