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 72
... observed these lineations are most valuable in ascertaining their direction . It is , however , essential to determine first the relation between axes of folding , lineations and cleavage planes . In other words , between all these ...
... observed these lineations are most valuable in ascertaining their direction . It is , however , essential to determine first the relation between axes of folding , lineations and cleavage planes . In other words , between all these ...
Seite 116
... observed . All are highly sheared and the shearing is most intense along the contacts where mylo- nites were produced . Marshall ( pt . IV ) reports that numerous dikes of this type occur within the metadacite and cut the gabbro dikes ...
... observed . All are highly sheared and the shearing is most intense along the contacts where mylo- nites were produced . Marshall ( pt . IV ) reports that numerous dikes of this type occur within the metadacite and cut the gabbro dikes ...
Seite 128
... observed directly and the 20-30 mile gap must be bridged by other means . Persistent structures which can be recognized over a large territory and which transgress formational bound- aries regardless of their trend serve the purpose ...
... observed directly and the 20-30 mile gap must be bridged by other means . Persistent structures which can be recognized over a large territory and which transgress formational bound- aries regardless of their trend serve the purpose ...
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