Report, Band 13John Hopkins Press, 1937 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. XIV (1941) |
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Seite 110
... EXPOSURES , DRAINAGE AND TOPOGRAPHY The best exposures of the area are along the Susquehanna River which has cut a steep - walled gorge , two hundred feet deep , across the regional strike and empties into the Chesapeake Bay . Its major ...
... EXPOSURES , DRAINAGE AND TOPOGRAPHY The best exposures of the area are along the Susquehanna River which has cut a steep - walled gorge , two hundred feet deep , across the regional strike and empties into the Chesapeake Bay . Its major ...
Seite 152
... exposures . Tributary streams which have considerable gradients for a short distance from the main rivers have cut through the residual soil into the crystallines . Far- ther from the main rivers and towards the central portion of the ...
... exposures . Tributary streams which have considerable gradients for a short distance from the main rivers have cut through the residual soil into the crystallines . Far- ther from the main rivers and towards the central portion of the ...
Seite 247
... exposures , make difficult the accurate description of sections . The coarse sandy portions of the formation are in places strongly ce- mented with iron oxide , forming hard crusts and pipe - like concretions lo- cally known as " pipe ...
... exposures , make difficult the accurate description of sections . The coarse sandy portions of the formation are in places strongly ce- mented with iron oxide , forming hard crusts and pipe - like concretions lo- cally known as " pipe ...
Inhalt
Page | 19 |
Preface | 25 |
Primary Elements in Igneous Rocks of the Piedmont | 37 |
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abundant amphibolite amygdules anticlines aplite axes of folding axis Baltimore gabbro Baltimore gneiss banding bedding biotite Bridge Chattolanee dome Chesapeake chlorite cleavage planes Conowingo Dam County Creek cross joints Crosswicks clay crystals deformation Delaware Deposit granodiorite complex diagrams dikes direction east Englishtown Englishtown sand epidote exposures fault feet feldspar flow cleavage flow lines flow structures foliation fossils fracture cleavage gabbro geologic Glenarm Glenarm Series grains granite porphyry granodiorite hornblende igneous rocks inclusions intrusive Jersey lamprophyre linear structures localities marble Marshalltown Marshalltown formation Maryland massive metamorphism metamorphosed mile minerals Mount Laurel Mount Laurel sand northeast occur orientation parallel pegmatite Piedmont planar Plate pluton Port Deposit Port Deposit granodiorite primary quarry quartz diorite quartzite recrystallization region relation schist schistosity sediments Setters formation shear specimen strike Susquehanna River syncline Towson dome transect unconformity Upper Cretaceous volcanics wall rock Wissahickon schist Woodstock dome