Report, Band 10Johns Hopkins Press, 1918 CONTENTS.--Vol. I (1897)--Vol. II (1898)--Vol. III (1899)--Vol. IV (1902)--Vol. V (1905)--Vol. VI (1906)--Vol. VII (1908)--Vol. VIII (1909)--Vol. IX (1911)--Vol. X (1918)--Vol. XI (1922)--Vol. XII (1928)--Vol. XIII (1937)--Vol. 14 (1941) |
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Seite 14
... Sandstone .. 194 194 The Shenandoah Limestone . The Newark Formation .. 194 194 Igneous Rocks 195 The Basic Volcanics . 195 The Acid Volcanics .. 195 The Diabase 195 PAGE THE APPALACHIAN REGION . 196 Sedimentary Rocks 198 The 14 CONTENTS.
... Sandstone .. 194 194 The Shenandoah Limestone . The Newark Formation .. 194 194 Igneous Rocks 195 The Basic Volcanics . 195 The Acid Volcanics .. 195 The Diabase 195 PAGE THE APPALACHIAN REGION . 196 Sedimentary Rocks 198 The 14 CONTENTS.
Seite 15
... Sandstones and Shales .. 198 The Loudon Formation .... 198 The Weverton Formation . 199 The Harpers Formation .... 199 The ... Sandstone . The Elbrook Limestone ..... The Conococheague Limestone ... Lower and Middle Ordovician Limestones ...
... Sandstones and Shales .. 198 The Loudon Formation .... 198 The Weverton Formation . 199 The Harpers Formation .... 199 The ... Sandstone . The Elbrook Limestone ..... The Conococheague Limestone ... Lower and Middle Ordovician Limestones ...
Seite 25
... sandstone ..... 238 85. Map showing Lower Cretaceous waters . 86. Map showing Upper Cretaceous waters . 87. Map showing Eocene waters .... 241 244 246 88. Map showing Lower Miocene waters . 248 89. Map showing Upper Miocene waters ...
... sandstone ..... 238 85. Map showing Lower Cretaceous waters . 86. Map showing Upper Cretaceous waters . 87. Map showing Eocene waters .... 241 244 246 88. Map showing Lower Miocene waters . 248 89. Map showing Upper Miocene waters ...
Seite 70
... sandstones and conglomerates of Mesozoic age and intruded by the diabase dikes of the same period . The threefold division of the Appalachian Region corresponds approxi- mately to the threefold division in the sequence of the Paleozoic ...
... sandstones and conglomerates of Mesozoic age and intruded by the diabase dikes of the same period . The threefold division of the Appalachian Region corresponds approxi- mately to the threefold division in the sequence of the Paleozoic ...
Seite 96
... sandstone ridges deep gorges result , but in the softer beds the channels are frequently wider , with low banks on either side . ECONOMIC PHYSIOGRAPHY OF THE APPALACHIAN REGION LINES OF COMMUNICATION . - The obstacles offered by the ...
... sandstone ridges deep gorges result , but in the softer beds the channels are frequently wider , with low banks on either side . ECONOMIC PHYSIOGRAPHY OF THE APPALACHIAN REGION LINES OF COMMUNICATION . - The obstacles offered by the ...
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30 feet Allegany County Anne Arundel County Aquia Average elevation Baltimore beds beneath the surface Blue Ridge Calvert Capacity of reservoir carried to reservoir Cecil County Chesapeake Bay Choptank City Clark Hoshall Coastal Plain Creek Cretaceous crystalline rocks Cumberland Curtis Bay Daily consumption Delaware deposits Diameter district Downin drilled Eastern Shore Elevation above source elevation above town Eocene feet beneath feet deep feet in depth Fire hydrants flow formation Frederick gallons per minute Garrett County Geological glauconite gneiss gravel gray Hagerstown Hard head inches iron limestone lower Magothy Mary's Maryland Matawan miles Miocene Mountain Municipality Nanjemoy Patapsco Patuxent peneplain Percentage of population Piedmont Plateau Pleistocene population supplied Potomac River Prince George's County Public supply sand sandstone sandy clay shales shallow Soft southern Sparrows Point springs streams SURFACE WATERS surface yields UNDERGROUND WATERS Upper valleys Washington water horizons Waterworks western Wicomico Worcester County