1. http://www.monmouth.com/~cathygrim/mystery.htm

2. Learning Targets 3b) I can describe the geologic laws of uniformitarianism, superposition, and original horizontality. 3c)I can use the geologic laws and cross cutting relationships to describe the sequence of events that lead to a particular rock record.

3. Essential Question How do scientists use relative dating to build a model of Earth’s history?

4. M. d’Alessio, 2004 Murder Mystery

5. Grand Canyon, Arizona, Copyright Larry Fellows http://www.earthscienceworld.org/imagebank/search/results.html?ImageID=hmwnq6 Originally Horizontal OLDER YOUNGER Timing Layers on top of layers

6. Watching Layers Form Larry Ridenhour, BLM/Jennifer Loomis, TERC http://www.classzone.com/books/earth_science/terc/content/investigations/es2903/es2903page03.cfm

7. Tilted Layers

8. USGS/Jennifer Loomis, TERCTilted limestone beds in the Mojave Desert, California http://www.classzone.com/books/earth_science/terc/content/investigations/es2903/es2903page04.cfm. Watching Layers Tilt

9. Unconformity Olympic Coast, Washington: 4th Beach near Kalaloch Copyright Patti Bleifuss http://patti.tensegrity.net/album/hoh/images/unconformity.jpg Unconformity

10. OLDER YOUNGER http://www.astro.lsa.umich.edu/users/cowley/grand33.jpg 270 Million Years Old 600+ Million Years Old TIMING: RELATIVE vs. ABSOLUTE Geologic Time

11. Fold Marin Headlands, California -- Image from Roland Bürgmann http://www.seismo.berkeley.edu/~burgmann/EPS116/labs/marin2004/Fold%20-%20John%20R%202.JPG

12. 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

13. Cross Cutting Grand Canyon, Arizona -- Copyright Ramón Arrowsmith http://activetectonics.la.asu.edu/ramon/Images/Grand_Canyon/36grandcanyon.tif.jpg Cross Cutting MOST RECENT

14. Death Valley, CA Copyright Marli Miller AGI Image Bank photo ha45z2 Zion, Utah Copyright Marli Miller AGI Image Bank photo ha45jb http://www.msnucleus.org/membership/html/jh/earth/sedimentary/lesson5/sedimentary5d.html PROCESS ANCIENT PRESENT “The present is the key to the past.” James Hutton Famous Geologist (lived 1726-1797) http://www.physicalgeography.net/ fundamentals/10c.html Wind and Process

15. M. d’Alessio, 2004 Murder Mystery