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The Rock Cycle Where do they come from? Where do they go?

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Presentation on theme: "The Rock Cycle Where do they come from? Where do they go?"— Presentation transcript:

1 The Rock Cycle Where do they come from? Where do they go?

2 What are rocks? Naturally occurring solids made of minerals no definite chemical composition Preserve Earth’s history when formed

3 What are the 3 major rock types? Igneous Sedimentary metamorphic

4 Igneous Made from molten lava or magma (fire) magma = below ground forms intrusive igneous rocks lava = above ground forms extrusive igneous rocks Can have large or small crystals Some cool too quick for gases to escape and leave bubbles

5 How are igneous rocks classified? felsic - Light rocks that contain high amounts of silica intermediate - contain between 52 - 62 % silica mafic - Dark rocks that contain little silica ultramafic - very dense with very little silica intrusive - formed above ground extrusive - formed below ground http://www.classzone.com/books/earth_science/terc/content/investigations/ es0602/es0602page02.cfm

6 Sedimentary Formed from compaction and cementation of weathered materials sediments from weathered rock are deposited weathering - breaking down of rock erosion - carrying rock away (usually by water) Some are formed biologically - coal, limestone Often contain FOSSILS!!! http://www.classzone.com/books/earth_science/terc/content/investigations/ es0602/es0602page02.cfm

7 Fossils fossilized body parts - bones, teeth, skin, embryos, etc... fossil traces - burrows, footprints, poop, etc... ONLY occur in sedimentary rock http://www.footprints-science.co.uk/fossils.htm

8 Metamorphic Rock Formed by heat and pressure Usually form deep within Earth’s crust Can have foliation banding that occurs from great stress and pressure, flattens crystals in pre -existing rock must have parent rock http://www.classzone.com/books/earth_science/terc/content/visualizations/es0607/es06 07page01.cfm http://www.classzone.com/books/earth_science/terc/content/investigations/ es0602/es0602page02.cfm

9 Are there types of metamorphism? YES!!! contact metamorphism - parent rock comes in contact with a heat source, such as magma regional metamorphism - changes to country rock over a large area plutons - small bodies of metamorphosed country rock batholiths - very large bodies of metamorphosed country rock

10 Rock cycle The dynamic changes of rocks between different types over time changes through: heat and pressure melting weathering and erosion

11 http://www.google.com/imgres?q=rock+cycle&hl=en&client=safari&sa=X&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=97D97nKo- yGC1M:&imgrefurl=http://www.meridianschools.org/MHS/TeachersStaff/MP/Nawrocki/Pages/Unit2RockCycle.aspx&docid=ut49RbuYWPJl8M&imgurl=http://www.meridianschools.org/MHS/TeachersStaff/MP/Nawrocki/PublishingImages/rock- cycle.jpg&w=510&h=400&ei=znL-UK--BZOy8ASTpYDQAw&zoom=1&iact=hc&vpx=443&vpy=171&dur=399&hovh=150&hovw=192&tx=118&ty=107&sig=115953012663293382693&page=1&tbnh=145&tbnw=185&start=0&ndsp=31&ved=1t:429,r:3,s:0,i:159

12 What is the rock cycle driven by? heat from Earth’s core mantle convection - circular motion of heat in Earth’s mantle mechanical energy - movement of rocks and pieces of rock downward by gravity http://www.youtube. com/watch?v=53lMd HzvGCQ

13 Resources http://www.google.com/imgres?q=gneiss&hl=en&client=safari&sa=X&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=JZdG5uXyrDcrtM:&imgrefurl=http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/gneiss.html&docid=- Yh_Ig1AgAcK7M&imgurl=http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/geopic/gneiss2.jpg&w=478&h=349&ei=omr- UOD5H5CC9gSLloHgCQ&zoom=1&iact=rc&dur=399&sig=115953012663293382693&page=1&tbnh=141&tbnw=180&start=0&ndsp=29&ved=1t:429,r:3,s:0,i:120&tx=60&ty=74 http://www.google.com/imgres?q=conglomerate&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=tJikh7m5qswCaM:&imgrefurl=http://library.thinkquest.org/05aug/00461/conglomerate.htm&docid=oCRxfFDpAh- CrM&imgurl=http://library.thinkquest.org/05aug/00461/images/conglomerate.jpg&w=450&h=338&ei=zWr- UKLOLZSC9gS2_IHYDw&zoom=1&iact=rc&dur=289&sig=115953012663293382693&page=1&tbnh=142&tbnw=197&start=0&ndsp=27&ved=1t:429,r:0,s:0,i:108&tx=112&ty=55 http://www.google.com/imgres?q=igneous&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=XxZxAtoogsd3-M:&imgrefurl=http://www.galleries.com/rocks/igneous.htm&docid=Kvs- Uv7CNULeKM&imgurl=http://www.galleries.com/rocks/igneous.jpg&w=320&h=240&ei=BGv- UKW1G5L68QTd_YGQCg&zoom=1&iact=rc&dur=284&sig=115953012663293382693&page=1&tbnh=139&tbnw=182&start=0&ndsp=27&ved=1t:429,r:0,s:0,i:134&tx=120&ty=69 http://www.google.com/imgres?q=sedimentary&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=ABpVUFku9In57M:&imgrefurl=http://www.kidsgeo.com/geology-for-kids/0027-sedimentary- rocks.php&docid=zosm1A9q5X8DSM&imgurl=http://www.kidsgeo.com/images/sedimentary-rocks.jpg&w=300&h=306&ei=PGv- UIDsMpGE8QSd7IGYAg&zoom=1&iact=rc&dur=301&sig=115953012663293382693&page=1&tbnh=141&tbnw=134&start=0&ndsp=30&ved=1t:429,r:8,s:0,i:158&tx=44&ty=76 http://www.google.com/imgres?q=metamorphic&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=lBoGVBQOga4G7M:&imgrefurl=http://www.americansouthwest.net/arizona/bill_williams_river/bwrocks_l.html&docid =FRipe3-IR7GFWM&imgurl=http://www.americansouthwest.net/arizona/photographs700/bwrocks.jpg&w=700&h=505&ei=WGv- UKrQK4WE8ASiqYBo&zoom=1&iact=hc&vpx=161&vpy=318&dur=1065&hovh=191&hovw=264&tx=135&ty=107&sig=115953012663293382693&page=1&tbnh=138&tbnw=185&start=0&ndsp=31&ved=1t:429,r:9,s:0,i:174 http://www.google.com/imgres?q=pumice&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=7lWEYQymPKFbMM:&imgrefurl=http://geology.com/rocks/pumice.shtml&docid=zL76aSqvvsOjuM&imgurl=http://geology.c om/rocks/pictures/pumice.jpg&w=560&h=420&ei=UGz-UM65MYHc8wSEr4HACg&zoom=1&iact=rc&dur=353&sig=115953012663293382693&page=1&tbnh=139&tbnw=169&start=0&ndsp=31&ved=1t:429,r:1,s:0,i:111&tx=60&ty=57 http://www.google.com/imgres?q=obsidian&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=FlKrzSUP4Ex53M:&imgrefurl=http://geology.com/rocks/obsidian.shtml&docid=CjiZ8xti8- h6QM&imgurl=http://geology.com/rocks/pictures/obsidian-380.jpg&w=380&h=285&ei=bmz- UKmtI4T69gSu2IC4CQ&zoom=1&iact=rc&dur=829&sig=115953012663293382693&page=1&tbnh=139&tbnw=198&start=0&ndsp=30&ved=1t:429,r:0,s:0,i:147&tx=154&ty=105 http://mineralsciences.si.edu/collections/rock_ore/ultramafic.htm http://www.google.com/imgres?q=sedimentary+rocks&um=1&hl=en&client=safari&sa=N&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=6HMYbzgsu- hy2M:&imgrefurl=http://en.wikibooks.org/wiki/High_School_Earth_Science/Sedimentary_Rocks&docid=dQyJlwkMIcbVUM&imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Helgoland_Lummenfelsen_22067.JPG/500px- Helgoland_Lummenfelsen_22067.JPG&w=500&h=375&ei=XG7- UMS6Co6G9QTzw4CYCA&zoom=1&iact=hc&vpx=470&vpy=318&dur=678&hovh=194&hovw=259&tx=100&ty=123&sig=115953012663293382693&page=1&tbnh=146&tbnw=192&start=0&ndsp=30&ved=1t:429,r:11,s:0,i:183

14 Resources http://www.google.com/imgres?q=carlsbad+caverns&um=1&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=GciONk0OurJhQM:&imgrefurl=http://www.nps.gov/cave/photosmultimedia/index.htm&docid=abOoeE6o13RZFM&imgurl=http://www.nps.go v/cave/photosmultimedia/upload/br_dolls_theater_jones.jpg&w=1800&h=1205&ei=lG7- UI7NOIa09gS52IDADA&zoom=1&iact=hc&vpx=4&vpy=168&dur=1681&hovh=184&hovw=274&tx=165&ty=105&sig=115953012663293382693&page=1&tbnh=139&tbnw=214&start=0&ndsp=28&ved=1t:429,r:0,s:0,i:147 http://www.google.com/imgres?q=fossil&hl=en&client=safari&sa=X&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=vgzOrR01VQU5kM:&imgrefurl=http://science.nationalgeographic.com/wallpaper/science/photos/permian-period/trilobite- fossil/&docid=f6zCv47kpd6XKM&imgurl=http://images.nationalgeographic.com/wpf/media-live/photos/000/012/cache/trilobite-fossil_1262_990x742.jpg&w=989&h=742&ei=Ym_-UN- WJorm8QThz4HoDA&zoom=1&iact=rc&dur=262&sig=115953012663293382693&page=1&tbnh=141&tbnw=212&start=0&ndsp=30&ved=1t:429,r:19,s:0,i:207&tx=78&ty=80 http://www.google.com/imgres?q=fossil&um=1&hl=en&client=safari&sa=N&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=z6t-cWFYjQdchM:&imgrefurl=http://www.123rf.com/photo_15603461_model-dinosaur- fossil.html&docid=BewxWxdTEa8zSM&imgurl=http://us.123rf.com/400wm/400/400/bennyartist/bennyartist1210/bennyartist121000045/15603461-model-dinosaur-fossil.jpg&w=1200&h=768&ei=XnD- UJXFG5GI9gTR4oGwAQ&zoom=1&iact=rc&dur=269&sig=115953012663293382693&page=2&tbnh=138&tbnw=220&start=30&ndsp=36&ved=1t:429,r:34,s:0,i:258&tx=84&ty=94 http://www.google.com/imgres?q=fossil+footprints&um=1&hl=en&client=safari&sa=N&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=Odkmgma0L8dXKM:&imgrefurl=http://www.statesymbolsusa.org/Massachusetts/fossil_dinotracks.html&docid=V- 7wVxSmms0o0M&imgurl=http://www.statesymbolsusa.org/IMAGES/Massachusetts/fossil-footprint-dinosaur-t.jpg&w=380&h=319&ei=hXD- UI34Kojk8gS0uICAAg&zoom=1&iact=hc&vpx=4&vpy=159&dur=340&hovh=206&hovw=245&tx=104&ty=120&sig=115953012663293382693&page=1&tbnh=144&tbnw=158&start=0&ndsp=35&ved=1t:429,r:0,s:0,i:124 http://www.google.com/imgres?q=foliation&hl=en&client=safari&sa=X&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=9Cc-yIwnvNH7GM:&imgrefurl=http://www.oldearth.org/curriculum/geology/geology_chapter_7.htm&docid=VX5z1NFvyLA- dM&imgurl=http://www.oldearth.org/curriculum/geology/images/Gneiss.jpg&w=600&h=361&ei=LHH-UKKuL4u89QS0- 4BQ&zoom=1&iact=hc&vpx=173&vpy=328&dur=1801&hovh=174&hovw=290&tx=119&ty=87&sig=115953012663293382693&page=1&tbnh=132&tbnw=210&start=0&ndsp=29&ved=1t:429,r:9,s:0,i:138 http://www.google.com/imgres?q=contact+metamorphism&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=ytC4oFJ7qQmIAM:&imgrefurl=http://academic.brooklyn.cuny.edu/geology/grocha/monument/quartzit.html&docid=j2BjpbFiaoM2JM&imgurl=h ttp://academic.brooklyn.cuny.edu/geology/grocha/monument/images/metheat.gif&w=583&h=400&ei=KXL- ULP3FY788QSEkoHoCA&zoom=1&iact=rc&dur=466&sig=115953012663293382693&page=1&tbnh=141&tbnw=200&start=0&ndsp=27&ved=1t:429,r:4,s:0,i:95&tx=51&ty=89 http://www.google.com/imgres?q=yosemite&hl=en&client=safari&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=OJLcll9EIGmaKM:&imgrefurl=http://en.wikipedia.org/wiki/File:Yosemite_20_bg_090404.jpg&docid=aGVN0ksSepUVMM&imgurl=http://upload.wikimedia.org /wikipedia/commons/8/87/Yosemite_20_bg_090404.jpg&w=1024&h=768&ei=UnL- UM2gIpOg8QSr2YC4BA&zoom=1&iact=hc&vpx=416&vpy=161&dur=198&hovh=194&hovw=259&tx=145&ty=104&sig=115953012663293382693&page=1&tbnh=135&tbnw=173&start=0&ndsp=27&ved=1t:429,r:2,s:0,i:153 http://www.google.com/imgres?q=rock+cycle&hl=en&client=safari&sa=X&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=LXwjRGNbJqNKwM:&imgrefurl=http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html&docid=mLUYm9iwuRDgjM&imgurl=http://www.cotf.e du/ete/images/modules/msese/earthsysflr/EFCycleP2.gif&w=393&h=350&ei=znL-UK--BZOy8ASTpYDQAw&zoom=1&iact=rc&dur=141&sig=115953012663293382693&page=1&tbnh=145&tbnw=163&start=0&ndsp=31&ved=1t:429,r:0,s:0,i:150&tx=95&ty=85 http://www.google.com/imgres?q=mantle+convection&um=1&hl=en&client=safari&sa=N&tbo=d&rls=en&biw=1440&bih=764&tbm=isch&tbnid=P_TRppVpgun40M:&imgrefurl=http://serc.carleton.edu/NAGTWorkshops/deepearth/visualizations/mantle_conv.html&docid=roAGfU i4CJrp3M&imgurl=http://bprc.osu.edu/education/rr/plate_tectonics/mantle_convection_cell.gif&w=661&h=369&ei=i3P- UNjHCpC68wTjsIDQCg&zoom=1&iact=hc&vpx=188&vpy=182&dur=662&hovh=135&hovw=266&tx=179&ty=118&sig=115953012663293382693&page=1&tbnh=135&tbnw=266&start=0&ndsp=27&ved=1t:429,r:1,s:0,i:101


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