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Topic: Exfoliation geology

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	Yosemite National Park - Wikipedia, the free encyclopedia
		The geology of the Yosemite area is characterized by granitic rocks and remnants of older rock.
		Exfoliation (caused by the tendency of crystals in plutonic rocks to expand at the surface) acting on granitic rock with widely spaced joints is responsible for creating domes such as Half Dome and North Dome and inset arches like Royal Arches.
		The uplifting and increased erosion exposed granitic rocks in the area to surface pressures, resulting in exfoliation (responsible for the rounded shape of the many domes in the park) and mass wasting following the numerous fracture joint planes (cracks; especially vertical ones) in the now solidified plutons.
	en.wikipedia.org /wiki/Yosemite_National_Park (6184 words)

	Exfoliation (Site not responding. Last check: 2007-11-01)
		In geology, exfoliation is a erosive process, caused by freeze-thaw cycles.
		Exfoliation causes rock, such as granite, to erode in large, thin sheets.
		Half Dome is an excellent example of a exfoliation.
	calif-journal.com /ref/exfoliation.html (243 words)

	LCC Geology WEB LINKS Page 04/01/05 (Site not responding. Last check: 2007-11-01)
		Geology in North Dakota - North Dakota State University
		Geology of the Loess Hills, Iowa - USGS
		Reyes Geology (San Andreas Fault north of San Francisco, CA)
	www.lcc.ctc.edu /departments/natural_sciences/links/linksGEOL.xtm (748 words)

	Overview of Belizean History
		Royal Palms Hotel: small muzzle loading swivel cannon on display in front of the bar.
		The severe exfoliation has revealed on the top side a mark, AB/AP, that, according to Peterson's "History Under the Sea", may be that of the Aker works in Copenhagen, Denmark, 1794.
		This cannon was originally found in the early 60's along with a hand forged grapnel hook, provenance unknown.
	ambergriscaye.com /fieldguide/history2.html (7867 words)

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