Joseph Canyon: Difference between revisions

'''Joseph Canyon''' (Nez Perce: '''an-an-a-soc-um''', meaning "long, rough canyon"<ref>{{cite web|last=Sambur | first=Jeff | title=On the Trail of the Nez Perce:Searching for the Promised Land|work=Native Peoples Magazine|url=http://www.nativepeoples.com/article/articles/238/1/On-the-Trail-of-the-Nez-Perce/Page1.html|date=1 January 2007|accessdate=2008-03-17}}</ref>) is a 2000-foot deep [[basalt]] [[canyon]] in northern [[Wallowa County]], [[Oregon]], and southern [[Asotin County]], [[Washington]], [[United States]]. It contains '''Joseph Creek''', a tributary of the [[Grande Ronde River]], which flows into the [[Snake River]] and then into the [[Columbia River|Columbia]]. The geology is typical of the [[Columbia River Basalt Group]], and the exposed canyon walls provide a striking view of [[flood basalt|flood basalt flows]] and [[Dike (geology)|dikes]]. The canyon floor contains [[sediment]]s deposited by the [[Missoula Floods]].<ref name="reidel">{{cite journal | last = Reidel | first = Stephen P. | coauthors = P. R. Hooper and S.M. Price | title = Columbia River Basalt Group, Joseph and Grande Ronde canyons, Washington | journal = Centennial Field Guide Volume 1: Cordilleran Section of the Geological Society of America | pages = 351–356| date = 1987 | url = http://www.gsajournals.org/archive/0-8137-5401-1/1/0/pdf/i0-8137-5401-1-1-0-351.pdf | accessdate = 2008-03-17}}</ref>