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6/11/2013 1 L4 - ROCKS-GENERAL CIVE 430 ENGINEERING GEOLOGY SUMMER 2013 WHAT IS A ROCK? A consolidated aggregate of minerals Three Types‐Three Main Processes Igneous: Solidification of magma Sedimentary: Deposition & cementation of loose particles Metamorphic: Changes to a preexisting rock (Igneous or Sedimentary) by squeezing it (Pressure) or heating it (Temperature)

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  • 6/11/2013

    1

    L4 - ROCKS-GENERAL

    CIVE 430 ENGINEERING GEOLOGY

    SUMMER 2013

    WHATISAROCK?Aconsolidated aggregateofmineralsThreeTypesThreeMainProcessesIgneous: SolidificationofmagmaSedimentary:Deposition&cementationoflooseparticlesMetamorphic: Changestoapreexistingrock(IgneousorSedimentary)bysqueezingit(Pressure)orheatingit(Temperature)

  • 6/11/2013

    2

    RockTYPES

    RockTYPESIGNEOUS

  • 6/11/2013

    3

    Rock TYPES SEDIMENTARY

    Rock TYPES METAMORPHIC

  • 6/11/2013

    4

    WhendoRocksMelt?WhenGeotherm CrossesMeltingCurve

    AllMaterialshaveaMeltingPoint

    TheMeltingPointchangeswithPressure&Composition

    RockCYCLE

  • 6/11/2013

    5

    RockCYCLE


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