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 56
... shear - folding will occur . In this case movements take place on the shear ( cleavage ) planes without lateral shortening and a fold will result . The thickness of the beds , however , remains constant parallel to the shear plane and ...
... shear - folding will occur . In this case movements take place on the shear ( cleavage ) planes without lateral shortening and a fold will result . The thickness of the beds , however , remains constant parallel to the shear plane and ...
Seite 58
... sheared into shear folds , or even bent into larger concentric anticlines and synclines . It is therefore necessary to investigate the details and to analyse the general plan of deformation of the region . Such analyses have recently ...
... sheared into shear folds , or even bent into larger concentric anticlines and synclines . It is therefore necessary to investigate the details and to analyse the general plan of deformation of the region . Such analyses have recently ...
Seite 209
... shearing . The shear zones are frequently marked by dikes of granite porphyry which is intensely sheared along the margins and shows a strong foliation in the center . These sheared dikes are common in granite and gabbros . In the ...
... shearing . The shear zones are frequently marked by dikes of granite porphyry which is intensely sheared along the margins and shows a strong foliation in the center . These sheared dikes are common in granite and gabbros . In the ...
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