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 159
Maryland Geological Survey. seem to be most abundant along the flanks of the domes and anticlines as well as within synclines or at contacts . Pegmatite dikes are particularly abundant in the easily permeable mica schist of both the ...
Maryland Geological Survey. seem to be most abundant along the flanks of the domes and anticlines as well as within synclines or at contacts . Pegmatite dikes are particularly abundant in the easily permeable mica schist of both the ...
Seite 198
... abundant than hornblende . Occasional larger grains of feldspar are crushed and partly granulated . Secondary growths of mag- netite and chlorite are also larger than the average grain size . Hornblende is the most abundant mineral ...
... abundant than hornblende . Occasional larger grains of feldspar are crushed and partly granulated . Secondary growths of mag- netite and chlorite are also larger than the average grain size . Hornblende is the most abundant mineral ...
Seite 198
... abundant than hornblende . Occasional larger grains of feldspar are crushed and partly granulated . Secondary growths of mag- netite and chlorite are also larger than the average grain size . Hornblende is the most abundant mineral ...
... abundant than hornblende . Occasional larger grains of feldspar are crushed and partly granulated . Secondary growths of mag- netite and chlorite are also larger than the average grain size . Hornblende is the most abundant mineral ...
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