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 34
Maryland Geological Survey. This was done on structural evidence collected by the writer and Hershey ( 26 ) and the evidence is presented in detail in Part II . Since this affects the interpretation of most of the igneous members of the ...
Maryland Geological Survey. This was done on structural evidence collected by the writer and Hershey ( 26 ) and the evidence is presented in detail in Part II . Since this affects the interpretation of most of the igneous members of the ...
Seite 147
... evidence . rocks of the pluton seem to be pyroxenites and peridotites , followed by gabbro , which is intruded by a series of granodiorites . The sequence is clearly from ultrabasic to the most acid intrusive . This sequence is paral ...
... evidence . rocks of the pluton seem to be pyroxenites and peridotites , followed by gabbro , which is intruded by a series of granodiorites . The sequence is clearly from ultrabasic to the most acid intrusive . This sequence is paral ...
Seite 162
... evidence for a general unconformity is shown by the much greater deformation and igneous injection in the gneiss as ... evidence for an unconformity . To the writer this appears to be insufficient evidence , since 162 GNEISS DOMES NEAR ...
... evidence for a general unconformity is shown by the much greater deformation and igneous injection in the gneiss as ... evidence for an unconformity . To the writer this appears to be insufficient evidence , since 162 GNEISS DOMES NEAR ...
Inhalt
Preface | 25 |
Economic Significance of Detailed Structural Investigations | 31 |
Structures in Igneous Rocks | 36 |
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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 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 volcanics wall rock Wissahickon schist Woodstock dome