. Maryland geological survey . wavesmust have eroded large areas of the Potomac and Lafayette formationsand re-worked their materials into its own deposits. Wherever theEocene sands and marls have been used in any considerable quantity,their presence is indicated hy a peculiar greenish color imparted to thedeposit. Miocene materials cannot be so readily detected, but they werenevertheless re-worked in large quantities. The rivers also brought incontributions from the Piedmont Plateau and the mountains of westernMaryland. This material was pushed along the bottom, drifted insuspension and float
. Maryland geological survey . wavesmust have eroded large areas of the Potomac and Lafayette formationsand re-worked their materials into its own deposits. Wherever theEocene sands and marls have been used in any considerable quantity,their presence is indicated hy a peculiar greenish color imparted to thedeposit. Miocene materials cannot be so readily detected, but they werenevertheless re-worked in large quantities. The rivers also brought incontributions from the Piedmont Plateau and the mountains of westernMaryland. This material was pushed along the bottom, drifted insuspension and floated along on ice-blocks. Section on Bay Shore Two Miles South of Cove Point. Feet. Inches. Pleistocene. Sandy loam 3 Sand and gravel 20 Iron layer 3 Fine white and red sand 3 6 Drab clayey sand 1 Reddish sand 6 Drab clayey sand 1 Fine white and red sand 3 6 Drab clay 8 Fine sand 6 Drab clay 3 Red sand 2 6 Iron layer 2 Miocene. Fossiliferous sandy clay 54 Total 96 7 MARYLAND GEOLOGICAL SURVEY. PLIOCENE AND PLEISTOCENE, PLATE XI. Fig. I.—VIEW SHOWING THE SUNDERLAND FORMATION unconformably overlying lowerCRETACEOUS DEPOSITS IN BELT LINE CUT, NEAR CHARLES STREET, BALTIMORE.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1901
