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Transcript of Idaho Batholith
is a large emplacement of
igneous intrusive (a.k.a plutonic)
rock that forms from cooled
magma deep in the Earth's crust
bathos (depth) + lithos (rock) bitterroot Lobe Sawtooths, Stanley West Central Mountains, McCall Atlanta Lobe
Kaniksu Lobe (Costal Range Batholith) Selkirk Crest Low angle of subduction Plates Collide Kaniksu Lobe
(as seen from the Montana side of the border) Middle-Late
Cretaceous (http://geology.isu.edu/Digital_Geology_Idaho/Module6/mod6.htm) (http://geology.isu.edu/Digital_Geology_Idaho/Module6/mod6.htm)
Cretaceous Greenhouse Climate -volcanoes
-extensional plate tectonics
-increased rate of tectonics
-low temperature gradient Reference: DeGrey, Laura, Myles Miller, and Paul Link. "Mesozoic Idaho Batholith." Digital Geology of Idaho. N.p., n.d. Web. 18 April, 2011. <http://geology.isu.edu/Digital_Geology_Idaho/Module6/mod6.htm>.