tag:blogger.com,1999:blog-19032021.post7768992453469594577..comments2024-03-29T06:24:15.937-07:00Comments on Earthly Musings - My Travel and Geology Blog: 2008 - A Banner Year in Grand Canyon Origin ResearchWayne Ranneyhttp://www.blogger.com/profile/15571579037328414935noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-19032021.post-17555699831972958712009-01-19T19:25:00.000-07:002009-01-19T19:25:00.000-07:00Wayne, here is a paper you may have missed that, a...Wayne, here is a paper you may have missed that, at the very least, makes a strong case for no Colorado River in the reach below Grand Canyon until after 5.59 Ma:<BR/><BR/>House, P.K., Pearthree, P.A., and Perkins, M.D., 2008, Stratigraphic evidence for the role of lake-spillover in the birth of the lower Colorado River in southern Nevada and western Arizona, in Reheis, M.C., Hershler, R., and Miller, D.M., eds., Late Cenozoic Drainage History of the Southwestern Great Basin and Lower Colorado River Region: Geologic and Biologic Perspectives: Geological Society of America Special Paper 439, p. 333-351.<BR/><BR/>The outcrops described in the paper are easy to reach and clearly preclude the presence of a large river along its present course...you might want to check them out some time.Dr. Jerquehttps://www.blogger.com/profile/15934444760785537721noreply@blogger.comtag:blogger.com,1999:blog-19032021.post-33777605972431183172009-01-19T15:20:00.000-07:002009-01-19T15:20:00.000-07:00There was also a paper on geoscience education at ...There was also a paper on geoscience education at the Grand Canyon, which may be of interest to some:<BR/><BR/>Karlstrom et al., 2008. Informal geoscience education on a grand scale: the Trail of Time exhibition at Grand Canyon. Journal of Geoscience Education, v. 56, no. 4, p. 354-361.<BR/><BR/>http://www.nagt.org/nagt/jge/abstracts/sep08.htmlAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-19032021.post-83962247524421555322009-01-12T03:14:00.000-07:002009-01-12T03:14:00.000-07:00Great post Wayne and thanks for the list of papers...Great post Wayne and thanks for the list of papers. I will try to get hold of copies of them as I find the 'young/old canyon' debate particularly fascinating! Enjoy your trip! Regards, AlynAlynhttps://www.blogger.com/profile/00775391085537593025noreply@blogger.com