Crustal DeformationOceanic basin tectonics• http://my.execpc.com/~acmelasr/mountains/geogramsnf.htmlPlate Tectonic Settings and Magma• The type of magma generated in different plate tectonic settings is different• DIVERGENT PLATES and MANTLE PLUMES produce magma by partial melting of mantle material due to pressure release• This magma is BASALTIC (mafic) in chemical composition, and the resulting volcanism has distinct characteristics.Convergent plate boundary• http://my.execpc.com/~acmelasr/mountains/geogramsnf.html• Where plates CONVERGE, water is driven off the subducting plate, and added to the overlying lithosphere• This water acts as a FLUX to reduce the melting temperature, and cause hot solid rock to melt without a change in temperature• The lithosphere here is continental (granitic) in character, and the magma generated is GRANITIC (felsic) in chemical composition.Plate Tectonic Settings and MagmaTectonic environment of Magma• Draw a diagram showing the relationship of tectonic plate interaction and the location of magma formation. Indicate the chemistry of the magma likely to form.Passive continent-to-ocean lithosphere transition• http://www.odp.usyd.edu.au/odp_CD/slope/slindex2.htmlDuctile and brittle deformationhttp://www.geology.wisc.edu/courses/g112/lecture3.htmlIsoclinal foldshttp://www.uwsp.edu/geo/faculty/hefferan/geol320/folds.htmlfoldshttp://www-class.unl.edu/geol101i/09_structural.htmMountain of foldsNames of fold typessynclinehttp://www.whbschools.org/Teachers/Cohen/sciweb/earthscience/geologichistory/folding.htmTight v foldshttp://www.uwsp.edu/geo/faculty/hefferan/geol320/folds.htmlRecumbent anticlinehttp://home.barton.ac.uk/curriculum/sc_env/geology/Structural%20Geology/RecumAnt.htmMonoclineSan Rafael Swell monoclinehttp://www.eas.purdue.edu/physproc/HTM%20Files/monoclines.htmPlunging fold geometryPlunging fold outcrop patternPlunging anticlinehttp://www.geosciences.ou.edu/~msoreg/structure/structureintro.htmlSheep mtn: doubly plunging aniclinehttp://www.geology.wisc.edu/~rschott/g112/lecture3.htmlGeologic map of the UShttp://pubs.usgs.gov/of/2000/of00-443/Legend for Tapestry of Time and Terrain Maphttp://tapestry.usgs.gov/ages/ages.htmlValley and Ridge Provincehttp://tapestry.usgs.gov/features/06valleyridge.htmlBlack hills domehttp://tapestry.usgs.gov/features/16blackhills.htmlDrawing of Black Hillshttp://www.dakotamatrix.com/South_Dakota_Geology.aspMichigan Basinhttp://tapestry.usgs.gov/features/09michigan.htmlSmall normal fault grabenhttp://www.aucegypt.edu/faculty/hamroush/CE331/CE331-%20Rock%20Deformation%20and%20Unconformities.htmNormal fault formationNormal faultSmall normal faulthttp://www.uwsp.edu/geo/faculty/hefferan/geol320/normalfaults.htmlNormal faultshttp://www.geology.wisc.edu/courses/g112/lecture3.htmlBasin and Range Provincehttp://tapestry.usgs.gov/features/22basinrange.htmlBasin and range faultingDetachment faultinghttp://www.uwsp.edu/geo/faculty/hefferan/geol320/normalfaults.htmlComplex normal faultinghttp://www.uwsp.edu/geo/faculty/hefferan/geol320/normalfaults.htmlEast Humboldt Range Horsthttp://www.uwgb.edu/dutchs/EarthSC202Slides/EQKSLIDE.HTMOwens Valley grabenhttp://www.uwgb.edu/dutchs/EarthSC202Slides/EQKSLIDE.HTMscarphttp://www.geosci.unc.edu/faculty/glazner/Images/Structure/Faults.htmlReverse fault formationReverse faulthttp://www.uwsp.edu/geo/faculty/ritter/glossary/o_r/reverse_fault.htmlThrust fault formationsmall thrust faulthttp://earth.leeds.ac.uk/assyntgeology/geology/deformation/gallery/thrust1.htmRegional thrust faulthttp://complabs.nevada.edu/~jkula/Geowna.htmlStrike-slip fault formationOffset streamSan Andreas Fault stream offsethttp://www.geology.wisc.edu/courses/g112/lecture3.htmlStrike slip faultSan Andreas Fault orchard offsethttp://www.geology.wisc.edu/courses/g112/lecture3.htmlSan Francisco offsethttp://quake.wr.usgs.gov/info/1906/images/fenceoffset_big.htmlTectonics of Western North AmericaSan Andreas Fault SystemJoint set in flat-lying sandstonehttp://www.geology.wisc.edu/~maher/air/air05.htmSingle joint sethttp://maps.unomaha.edu/Maher/geo117/part3/structures/structureatlas.htmlJoints at Moabhttp://www.ce.berkeley.edu/~nsitar/ce281/Sierra%20Nevada%202000/Attitude%20Measurement%20Lake%20Spaulding.jpgBryce Canyon, Utahhttp://www.cs.biu.ac.il/~plot/USA/Exfoliation jointinghttp://www.ic.ucsc.edu/~casey/eart150/Lectures/Joints/JointsPics.htmlExfoliation domehttp://darkwing.uoregon.edu/~millerm/exjoints.htmlExfoliation joint formationhttp://www.ic.ucsc.edu/~casey/eart150/Lectures/Joints/joints.htmColumnar jointshttp://www.ic.ucsc.edu/~casey/eart150/Lectures/Joints/joints.htmColumnar
View Full Document
Unlocking...