Smithsonian miscellaneous collections . Unconformdlile i t lictween the Cambrian (7 = Tapeats sandstone) and the tines; exprsure of ?)exposed between the \ich(_an as seen m plate 42 and the highest beds of the Algonkian shown on the nibeneath the clitts of Lanil)rian (/=lapeats) sandstone as the outcrop of the latter winds m and out aroithe Chuar series (C/i) aie beautitulh exposed on the west side of the Grand Canyon in the Canyon \ alle> gressing MidiThe lineThe local ,..„ seas covered them with its beach sands^ t(irmit> (.^() at the base of the Cambrian (r=Tapeats sandstone) cuts


Smithsonian miscellaneous collections . Unconformdlile i t lictween the Cambrian (7 = Tapeats sandstone) and the tines; exprsure of ?)exposed between the \ich(_an as seen m plate 42 and the highest beds of the Algonkian shown on the nibeneath the clitts of Lanil)rian (/=lapeats) sandstone as the outcrop of the latter winds m and out aroithe Chuar series (C/i) aie beautitulh exposed on the west side of the Grand Canyon in the Canyon \ alle> gressing MidiThe lineThe local ,..„ seas covered them with its beach sands^ t(irmit> (.^() at the base of the Cambrian (r=Tapeats sandstone) cuts across the north and west sides of the Grand Canyon of the Colorado River, Arizona, op[ VOL. 6-1, NO. 4, PU. 43. etaniorphosed strata in the world. Jully feet of the l^nkar and Chuar series of formations areite 43, beneath the Cambrian. The red sandstones of the Unkar series (Un) stand out in strong reHefinyons and projecting headlands between them. To the north the sandstones, shales and limestones ofid Nunkoweap. Everywhere erosion planed these formations down nearly to a level before the trans- in thickness of the Algonkian (C/« = Unkar) series on which it rests,^iew, and where the Colorado River flowing from the north bends to the westward. IISCELIANEOUS COLLECTIONS c Ssh


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