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
... dikes , stringers , and offshoots from the larger dikes are frequently cross - cutting . Large dikes occur along the contact of the Setters mica schist with both the gneiss and quartz diorite . Swarms of large dikes have injected the ...
... dikes , stringers , and offshoots from the larger dikes are frequently cross - cutting . Large dikes occur along the contact of the Setters mica schist with both the gneiss and quartz diorite . Swarms of large dikes have injected the ...
Seite 160
... DIKES A number of alaskite porphyry dikes up to several feet wide cut the marble and schist between Hollofield and Dorseys Run . Locally they conform to the strike of the country rock . The largest dike cuts across the strike of the ...
... DIKES A number of alaskite porphyry dikes up to several feet wide cut the marble and schist between Hollofield and Dorseys Run . Locally they conform to the strike of the country rock . The largest dike cuts across the strike of the ...
Seite 207
... dikes from a few inches . to about 75 feet thick . These dikes are most abundant along the Susque- hanna River and the lower part of Principio Creek but are found also over the whole area . Along the Susquehanna River in Harford County ...
... dikes from a few inches . to about 75 feet thick . These dikes are most abundant along the Susque- hanna River and the lower part of Principio Creek but are found also over the whole area . Along the Susquehanna River in Harford County ...
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