December 9, 2009 BReading Ch. 15 (Cenozoic History) BFinal Exam date: TU, Dec. 15 Material covered:...
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Transcript of December 9, 2009 BReading Ch. 15 (Cenozoic History) BFinal Exam date: TU, Dec. 15 Material covered:...
December 9, 2009
Reading Ch. 15 (Cenozoic History) Final Exam date: TU, Dec. 15
• Material covered: Ch. 13, 14, 15, 16(?) + movie
Firefighters rescue boy with tongue stuck to post
BOISE, Idaho — It’s become an annual winter tale: A young boy gets his tongue stuck to a metal pole, perhaps as the result of a dare. This year, the scene straight out of the movie “A Christmas Story” unfolded Tuesday morning in Boise with a boy of about 10. Boise firefighters used a glass of warm water to free the unidentified boy from the metal fence pole, according to the Idaho Statesman newspaper. Fire Capt. Bill Tinsley says the boy’s tongue was bleeding a little, but he was OK and allowed to continue walking to school. Rescue workers responded after a woman driving by saw the boy and called police dispatchers. Last year, the unlucky boy was a 10-year-old from Hammond, Indiana — especially apt, since the 1983 movie is set in a fictional city based on Hammond.
Cenozoic Era Remaining 65 my
• Only 1.5% of time
Better fossil record• More divisions
http://www.bgs.ac.uk/Education/britstrat/cenozoic.htmlhttp://hoopermuseum.earthsci.carleton.ca/evolution/equidae/cenozoicera.html
Early Cenozoic (Paleocene & Eocene)
Laramide orogeny (#3 of Cordilleran)
• Formed intermontane basinsCoal swamps (Ex: Powder River Basin)Limestones (Ex: Bryce Canyon, UT)Shales (Ex: Green River Fmn, WY)
sec.edgar-online.com/.../05/10/Section5.aspxhttp://geoinfo.nmt.edu/tour/state/storrie_lake/home.htmlhttp://from50000feet.wordpress.com/2007/12/17/dolan-media-pre-christmas-rush/
Bryce Canyon
Green River Fmn
Mid-Late Cenozoic
(Oligocene & Miocene)
Change of subduction angle• Volcanism intensified again• Ash deposits prevalent
Ex: San Juan Mtns, COEx: Badlands, SD
• Meanwhile, Rockies getting buried by basin filling
http://www.scenicusa.net/010906.html
Badlands, SD
San Juan Mtns, CO
Late Cenozoic (Miocene & Pliocene)
Change in plate motion• Convergent to transform
San Andreas fault
• Basin and Range province formed
Rifting due to hot spot• Columbia R. basalts
Uplifting• Colorado Plateau• Rocky Mtns uncovered
http://www.fas.org/irp/imint/docs/rst/Sect6/Sect6_8.htmlhttp://www.naturalphotos.com/sekercioglu/colorado_plateau/pages/ARZ1-Clrd-Horseshoe.htm
Cenozoic Events on other Continents
Europe-Africa collision• Closing of Tethys ocean• Alps & Pyrenees Mtns• East Africa rifts
India-Asia collision• Himalayan Mtns
Antarctica chilled
http://www.travelpod.com/travel-photo/zenpeace/leh_ladakh/1184149500/100_3860.jpg/tpod.html
Cenozoic Climate Early greenhouse climate
http://www.geo.arizona.edu/Antevs/ecol438/lect07.htmlhttp://www.nist.gov/public_affairs/colloquia/20050121.htm
http://www7430.nrlssc.navy.mil/7432/hydrates/background.htm
Eocene warm peak• Evidence
Oxygen isotopes Leaf features Cold water extinctions
• Cause Methane hydrates