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 50
... original rocks can only be surmised . A large number , however , still show traces of original structures which are FIG . 1 . FIG . 2. Fracture cleavage in 50 CRYSTALLINE ROCKS OF MARYLAND.
... original rocks can only be surmised . A large number , however , still show traces of original structures which are FIG . 1 . FIG . 2. Fracture cleavage in 50 CRYSTALLINE ROCKS OF MARYLAND.
Seite 78
... original rock , overwhelming all primary characteristics . Migmatites , gneisses , and rocks , that are thoroughly recrystallized and remolded are frequently found in which occasional structures , like conglomerate fragments , banding ...
... original rock , overwhelming all primary characteristics . Migmatites , gneisses , and rocks , that are thoroughly recrystallized and remolded are frequently found in which occasional structures , like conglomerate fragments , banding ...
Seite 204
... original nature of the volcanic complex has been obscured by the later intrusions and their shattering of the volcanic rocks . However , while the large structural features have been largely obliterated , smaller structures often remain ...
... original nature of the volcanic complex has been obscured by the later intrusions and their shattering of the volcanic rocks . However , while the large structural features have been largely obliterated , smaller structures often remain ...
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