1. Earth History Dating geologic events like volcanic eruptions, uplift, subsidence, deposition, impacts, intrusion, ice ages, etc

6. Geologic Age Dating Relative Age Dating –Places events in a sequence –Only indicates one is older than other Absolute Age Dating –Also called: Radiometric/Radio- active Dating –Identifies actual age

7. Relative Age Dating rules/laws to follow when dating rocks Uniformitarianism Law of Original Horizontality Law of Superposition Law of Cross-cutting Relationships Law of Include Fragments Unconformities

8. Relative Age Dating Uniformitarianism –“The present is the key to the past” James Hutton –Geologic events are not catastrophic

9. Relative Age Dating Original Horizontality –sedimentary rocks form horizontal to the surface of the earth. –Sedimentary rocks usually form below sea- level

11. SEDIMENTARY ROCKS 75% of the Earth’s surface –sed Usually form below sea level form from the compaction and cementation of sediments (lithification) Weathering (breakdown of rock)  Sediment (fragments of rock)  Erosion (movement/transport of sediment)  Deposition (settling of sediment)  Burial  Compaction (pushing together of sediment  Cementation (gluing of sediments) http://www.westhamptonbeach.k12.ny.us/Teachers/cohen/sciweb/earthscience/powerpoint_notes/powerpoint_notes.htm

12. Properties of Sedimentary Rocks Layers/Strata Fragments of other rocks Fossils – remains/impression of organism Compacted crystals

13. Environment of Formation Types of fossils (marine, freshwater) Size and shape of sediment Layers/Strata of sediment, ripple marks

14. http://www.classzone.com/books/earth_scien ce/terc/content/visualizations/es2901/es2901 page01.cfm?chapter_no=visualization Fossil forming http://www.classzone.com/books/earth_scien ce/terc/content/visualizations/es0701/es0701 page01.cfm?chapter_no=visualization (coal forming) http://www.classzone.com/books/earth_scien ce/terc/content/visualizations/es0604/es0604 page01.cfm?chapter_no=visualization (sediments being deposited http://www.coaleducation.org/miningtv/default.htm Coal mining videos http://www.wwnorton.com/college/geo/egeo/animations/ch12.htm Shale becomes oil http://highered.mcgraw- hill.com/sites/0072402466/student_view0/chapter 10/animations_and_movies.html# Sediment transport http://www.classzone.com/books/earth_science/terc/content/visualizations/es0605/es0 605page01.cfm?chapter_no=visualizationhttp://www.classzone.com/books/earth_science/terc/content/visualizations/es0605/es0 605page01.cfm?chapter_no=visualization cementation

15. http://www.eram.k12.ny.us/education/sctemp/0c525861b50e177dace8b634d0e0d5f7/ 1203603040/sedimentary.swf Burrows

18. Relative Age Dating Superposition –Oldest at bottom –Youngest at top

19. Relative Age Dating Cross-cutting –Younger rocks (igneous intrustions/extrustions) or structures (folds, faults) cross-cut older rock

20. Complex Bedrock Structures Intrusions Folding (bending) Faulting (break) Tilting

21. Faults, folding, tilting Folding (bending) Tilting

24. Relative Age Dating Include Fragments –Sediment in the rock must be older than the rock itself –Ex: conglomerate

25. Relative Age Dating Unconformity –A buried break or gap in rock sequence –Missing rock record –Caused by: erosion Lack of deposition

28. http://www2.wwnorton.com/college/geo/egeo/flash/10_2.swf http://www2.wwnorton.com/college/geo/egeo/flash/10_1.swf

49. http://geography.cst.cmich.edu/Franc1M/Animations/animation_list_posted.htm alphabetical list of animations all different topics – animations http://earthguide.ucsd.edu/earthguide/diagrams.html !http://earthguide.ucsd.edu/earthguide/diagrams.html http://emvc.geol.ucsb.edu/downloads.php 9ice age, plate tectonics,etchttp://emvc.geol.ucsb.edu/downloads.php differnt topics – found 4/24/08 Earth History http://simile.mit.edu/timeline/examples/dinosaurs/dinosaurs2.html you can also make your own interactive timeline (tedious though) http://simile.mit.edu/timeline/docs/create-timelines.html#getting-started http://simile.mit.edu/timeline/examples/dinosaurs/dinosaurs2.html http://simile.mit.edu/timeline/docs/create-timelines.html#getting-started Earth History http://www.nmnh.si.edu/paleo/geotime/main/index.html geo time linehttp://www.nmnh.si.edu/paleo/geotime/main/index.html http://www.indiana.edu/~ensiweb/home.html http://www.indiana.edu/~ensiweb/evol.fs.html evolutionhttp://www.indiana.edu/~ensiweb/home.html http://www.indiana.edu/~ensiweb/evol.fs.html You can get glossaries at http://www.litstudies.com/bilingual_esl/BilingualGlossaries/index.htm The main part of the screen will be white, but you can click on the languages on the left. It is actually from the remains of the http://www.litstudies.com/bilingual_esl/index.htm and then http://www.litstudies.com/bilingual_esl/BilingualGlossaries/index.htm http://www.litstudies.com/bilingual_esl/index.htm http://www.gly.uga.edu/railsback/GeologicalDiagrams1.html geology diagramshttp://www.gly.uga.edu/railsback/GeologicalDiagrams1.html

50. Sedimentary Rocks Texture (3 types) 1. Clastic – fragments of rocks cemented Land-derived sediments eroded, and deposited(usually in water), buried, compacted and cemented. Ex: sandstone 2. Crystalline (Chemical) – compacted minerals Dissolved minerals/salts precipitate out of water, settle, buried, compacted and cemented 3. Bioclastic (organic) – have fossils (shells, plant matter) Form from something once living ex: coal, coral http://www.wiley.com/college/strahler/0471480533/animations/ch12_animations/animation2.html

51. CLASTIC CRYSTALLINE BIOCLASTIC

54. http://geography.cst.cmich.edu/Franc1M/Animations/animation_list_posted.htmhttp://geography.cst.cmich.edu/Franc1M/Animations/animation_list_posted.htm - go to watersheds MISS