Section 2 Relative Dating: Which Came First?
Geologic News Write a news article from the perspective of a geologist Include all of the key terms from this week Your story must make sense Be creative and have fun!
Relative Dating Determining the age and order of particular events or objects. http://encyclopedia.laborlawtalk.com/wiki/images/thumb/1/14/250px-Grand_Canyon_geologic_column.jpeg
Superposition Younger rocks lie above older rocks in undisturbed sequences. http://earth.geol.ksu.edu/liu/g100/figures/15_superposition.jpg
The Geologic Column An ideal sequence of rock layers that contain all the known fossils and rock formations on earth, arranged from oldest to youngest. http://en.wikipedia.org/wiki/User:Maveric149/images/Idaho
http://www.nps.gov/care/resources/admin%20history/images/fig3.jpg
Disturbed Rock Layers http://www.stmarys.ca/conted/webcourses/GEO/GEO99/pubigneous/intrusion.gif http://scamp.wr.usgs.gov/scamp/photo/aug88p07JKN-26M.jpg http://www.nps.gov/care/graphics/wtrpkt1.gif http://www.utdallas.edu/dept/sci_ed/torch/bb00_geo-al_files/image018.jpg
The Missing Piece Unconformity-a surface missing part of geologic column. Nondeposition Erosion Disconformities Nonconformities Angular Unconformities