. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. ^ and vertically, changing fromblack carbonaceous claj to coarse white or yellow sand and the sand beds have become cemented by iron, forminglayers of brown or red sandstone. In some places, as at the northern The Tertiary geology of southern Arkansas, by Gilbert D. Harris: Ann. Kept. Geol. Survey Arkan-sas, 1892, Vol. II. 2The Neozoic geology of southwestern Arkansas, by Robert T. Hill: Ann. Rept. Geol. SurveyArkans
. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. ^ and vertically, changing fromblack carbonaceous claj to coarse white or yellow sand and the sand beds have become cemented by iron, forminglayers of brown or red sandstone. In some places, as at the northern The Tertiary geology of southern Arkansas, by Gilbert D. Harris: Ann. Kept. Geol. Survey Arkan-sas, 1892, Vol. II. 2The Neozoic geology of southwestern Arkansas, by Robert T. Hill: Ann. Rept. Geol. SurveyArkansas, 1888, Vol. II. 3The Lafayette formation, by W J McGee: Twelfth Ann. Rept. U. S. Geol. Survey, 1890-91, Pt.
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1900, bookyear1901
