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
... usually coarser grained . Two types of hornblende granodiorite are found at Principio Furnace on Principio Creek . Megascopically they appear to be two entirely differ- ent rocks . One is dark colored but the other is light and contains ...
... usually coarser grained . Two types of hornblende granodiorite are found at Principio Furnace on Principio Creek . Megascopically they appear to be two entirely differ- ent rocks . One is dark colored but the other is light and contains ...
Seite 134
... usually measuring less than a foot in their longest direction . In the massive and hornblende types they are somewhat larger . They are largest and most abundant in the hornblende - biotite type where the longest measured was seven feet ...
... usually measuring less than a foot in their longest direction . In the massive and hornblende types they are somewhat larger . They are largest and most abundant in the hornblende - biotite type where the longest measured was seven feet ...
Seite 138
... usually strikes just east of north and since these joints are displaced by the movement along the regional tension joints they must have been formed before that move- ment took place . One such joint is shown in Figure 16 with its ...
... usually strikes just east of north and since these joints are displaced by the movement along the regional tension joints they must have been formed before that move- ment took place . One such joint is shown in Figure 16 with its ...
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