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 116
... crystals zoned . Orthoclase is present in very small amounts . Biotite , the chief ferro- magnesian mineral , is approximately twice as abundant as it is in the granodiorite . It is greenish brown or olive green and mostly considerably ...
... crystals zoned . Orthoclase is present in very small amounts . Biotite , the chief ferro- magnesian mineral , is approximately twice as abundant as it is in the granodiorite . It is greenish brown or olive green and mostly considerably ...
Seite 122
... crystals of hornblende pre- dominate . Numerous crystals of garnet occur in these inclusions . Peridotite altered to amphibolite was found below Conowingo Dam in a large inclusion . Megascopically the rock is holocrystalline , rather ...
... crystals of hornblende pre- dominate . Numerous crystals of garnet occur in these inclusions . Peridotite altered to amphibolite was found below Conowingo Dam in a large inclusion . Megascopically the rock is holocrystalline , rather ...
Seite 134
... crystals show evidence of flexing . The deformation seems restricted en- tirely to the biotite clusters . The flexures may be interpreted as due to movements after the crystal- lization and aggregation of the biotite crystals , but ...
... crystals show evidence of flexing . The deformation seems restricted en- tirely to the biotite clusters . The flexures may be interpreted as due to movements after the crystal- lization and aggregation of the biotite crystals , but ...
Inhalt
Page | 19 |
Preface | 25 |
Elements of the Rigid Phase | 47 |
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Häufige Begriffe und Wortgruppen
abundant amphibolite amygdules anticlines aplite axes of folding axis Baltimore gabbro Baltimore gneiss banding bedding biotite Bridge canal Chattolanee dome Chesapeake chlorite cleavage planes Conowingo Dam County Creek cross joints Crosswicks clay crystals deformation Delaware Deposit granodiorite complex diagrams dikes direction east Ellicott City 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 granite porphyry 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 granodiorite primary quarry quartz diorite quartzite recrystallization region relation schist schistosity sediments Setters formation shear specimen strike Susquehanna River syncline Towson dome transect unconformity volcanics wall rock Wissahickon schist Woodstock dome