Redwall Limestone: Difference between revisions

In 1875, Gilbert<ref name="Gilbert1875a">Gilbert, G.K., 1875. ''Report upon the geology of portions of Nevada, Utah, California, and Arizona, Chapter 6.'' In Wheeler, G.M., ed., pp. 17-187, ''Report on the Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian'', vol. 3. U.S. Geological and Geographical Survey, Publication of the Wheeler Survey, Washington, D.C., 681 pp.</ref> recognized and named the Redwall Limestone for the red coloration of its [[escarpment]] on either side of Grand Canyon. As originally defined by him, it included some [[strata]] younger and older than as it is currently defined. Later in 1910, Darton<ref name="Darton1910a">Darton, N. H., 1910. ''A reconnaissance of parts of northwestern New Mexico and northern Arizona''. ''U.S. Geological Survey Bulletin''. 435, 88p.</ref> selected a canyon that he named the ''Redwall Canyon'' in the Shinumo drainage basin, on north side of the Grand Canyon, as the [[stratotype|type section]] of the Redwall Limestone. At this location, it consists ''mostly'' of the ''usual heavily bedded massive [[limestone]]'' and is circa {{convert|800|ft244|m|ft|abbr=on}} thick. Noble<ref name="Noble1914a">Noble, LF (1914) ''The Shinumo quadrangle, Grand Canyon district, Arizona.'' Bulletin no. 549, US Geological Survey, Reston, Virginia. 42 pp.</ref> subsequently redefined the Redwall Limestone in its present definition, which includes all strata of Mississippian age. As a result of studies in [[Yavapai County, Arizona]], Gutschick<ref name="Gutschlck1943a">Gutschlck, R. C., 1943. ''The Redwall Limestone (Mississippian) of Yavapai County, Arizona''. ''Plateau'', 16(1), pp. 1-11.</ref> recognized four informal members within the Redwall Limestone and McKee<ref name="McKee1963a">McKee, E. D., 1963. ''Nomenclature for lithologic subdivisions of the Redwall Limestone, Arizona''. ''U.S. Geological Survey Professional Paper''. 475-C, pp. C21-C23.</ref> later formally named them. The most comprehensive study of the Redwall Limestone is the ''History of the Redwall Limestone of northern Arizona'' by McKee and Gutschick.<ref name="McKeeOthers1969a">McKee, E.D., and Gutschick, R.C., eds., 1969. ''History of the Redwall Limestone of northern Arizona, [with] chapters on paleontology of the Redwall Limestone by B. Skipp, W.J. Sando, H. Duncan, E.L. Yochelson, W.M. Furnish, D.B. Macurda, Jr., and J.C. Brower''. ''Geological Society of America Memoir''. 114. Boulder, Colorado, Geological Society of America. 612 pp {{ISBN|978-08-137-1114-0}}</ref>