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M. d’Alessio, 2004Murder Mystery
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Originally Horizontal
OLDEROLDER
YOUNGERYOUNGER
Timing
Layers on top of layers
Watching Layers Form
Larry Ridenhour, BLM/Jennifer Loomis, TERChttp://www.classzone.com/books/earth_science/terc/content/investigations/es2903/es2903page03.cfm
es2903_p03_deposition.swf
Tilted Layers
USGS/Jennifer Loomis, TERCTilted limestone beds in the Mojave Desert, Californiahttp://www.classzone.com/books/earth_science/terc/content/investigations/es2903/es2903page04.cfm .
Watching Layers Tilt
Unconformity
Unconformity
Olympic Coast, Washington: 4th Beach near KalalochCopyright Patti Bleifusshttp://patti.tensegrity.net/album/hoh/images/unconformity.jpg
Geologic Time
OLDEROLDER
YOUNGERYOUNGER
http://www.astro.lsa.umich.edu/users/cowley/grand33.jpg
270 Million Years Old
600+ Million Years Old
TIMING: RELATIVE vs. ABSOLUTETIMING: RELATIVE vs. ABSOLUTE
Fold
Fold
Marin Headlands, California -- Image from Roland Bürgmannhttp://www.seismo.berkeley.edu/~burgmann/EPS116/labs/marin2004/Fold%20-%20John%20R%202.JPG
USGS/Tom Grace, TERCFolded layers in the Sangre de Cristo Range of Colorado.http://www.classzone.com/books/earth_science/terc/content/investigations/es2903/es2903page05.cfm?chapter_no=investigation
Watching Layers Fold
Cross CuttingGrand Canyon, Arizona -- Copyright Ramón Arrowsmith http://activetectonics.la.asu.edu/ramon/Images/Grand_Canyon/36grandcanyon.tif.jpg
Cross Cutting
MOST RECENT
Wind and Process
Death Valley, CACopyright Marli MillerAGI Image Bank photo ha45z2 Zion, Utah
Copyright Marli MillerAGI Image Bank photo ha45jb
http://www.msnucleus.org/membership/html/jh/earth/sedimentary/lesson5/sedimentary5d.html
PROCESSPROCESS
ANCIENTANCIENTPRESENTPRESENT
“The present is the key to the past.”
James HuttonFamous Geologist
(lived 1726-1797)http://www.physicalgeography.net/fundamentals/10c.html
M. d’Alessio, 2004Murder Mystery