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 114
... Biotite granite Rowlandsville type HERSHEY ( 1936 ) Massive granodiorite Port Deposit granodiorite or biotite granodiorite → Hornblende - biotite and quartz diorite Hornblende - biotite granite - Hornblende - granodiorite The Port ...
... Biotite granite Rowlandsville type HERSHEY ( 1936 ) Massive granodiorite Port Deposit granodiorite or biotite granodiorite → Hornblende - biotite and quartz diorite Hornblende - biotite granite - Hornblende - granodiorite The Port ...
Seite 115
... biotite granodiorite is the criterion for separating it from the biotite facies . Because of the increase in hornblende and magnetite this type is darker in color and more basic . These two minerals increase in amount as the gabbro ...
... biotite granodiorite is the criterion for separating it from the biotite facies . Because of the increase in hornblende and magnetite this type is darker in color and more basic . These two minerals increase in amount as the gabbro ...
Seite 116
... biotite , can be easily recognized . The quartz is often smoky blue . Under the microscope the rock is found to be composed chiefly of feld- spar , quartz and biotite . The quartz almost always shows strain shadows and mosaic patterns ...
... biotite , can be easily recognized . The quartz is often smoky blue . Under the microscope the rock is found to be composed chiefly of feld- spar , quartz and biotite . The quartz almost always shows strain shadows and mosaic patterns ...
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