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 158
... larger dikes appear to be confined to certain areas . Pegmatites vary in size from small stringers and isolated lenses to large dikes several hundred feet wide and a mile or two long . The larger pegmatite veins generally occur as dike ...
... larger dikes appear to be confined to certain areas . Pegmatites vary in size from small stringers and isolated lenses to large dikes several hundred feet wide and a mile or two long . The larger pegmatite veins generally occur as dike ...
Seite 198
... 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 , making up about half of the rock . It is ...
... 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 , making up about half of the rock . It is ...
Seite 201
... larger than the rest of the grains and are nearly parallel . The essential minerals are hornblende , making up about 50 per cent of the rock , and feldspar and quartz in nearly equal amounts . The hornblende grains tend to be shorter ...
... larger than the rest of the grains and are nearly parallel . The essential minerals are hornblende , making up about 50 per cent of the rock , and feldspar and quartz in nearly equal amounts . The hornblende grains tend to be shorter ...
Inhalt
The Application of Recent Structural Methods in the Interpretation | 27 |
General Statement | 49 |
Types and Manner of Producing folds | 55 |
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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 microscope 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