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 21
... specimen 145 . 196 Fig . 2. Photomicrograph of schistose volcanics . Parallel nicols , specimen 9 . 196 Fig . 3. - Photomicrograph of basal sections of tremolite in granulose rock , parallel nicols , specimen 29 .. 196 Fig . 4 ...
... specimen 145 . 196 Fig . 2. Photomicrograph of schistose volcanics . Parallel nicols , specimen 9 . 196 Fig . 3. - Photomicrograph of basal sections of tremolite in granulose rock , parallel nicols , specimen 29 .. 196 Fig . 4 ...
Seite 196
... specimen are of about the same width . With a higher degree of metamorphism the banding is destroyed and the rock grades into an amygdaloidal hornblende schist , which in turn grades into a schist in which the amygdules are no longer ...
... specimen are of about the same width . With a higher degree of metamorphism the banding is destroyed and the rock grades into an amygdaloidal hornblende schist , which in turn grades into a schist in which the amygdules are no longer ...
Seite 198
... specimen and also occurs near the contact of a granite porphyry dike . In hand specimens it is almost black with a ... Specimen from Susquehanna River , Keystone quarry , at the contact of a gabbro dike : Megascopically this material is ...
... specimen and also occurs near the contact of a granite porphyry dike . In hand specimens it is almost black with a ... Specimen from Susquehanna River , Keystone quarry , at the contact of a gabbro dike : Megascopically this material is ...
Inhalt
Page | 19 |
Preface | 25 |
Elements of the Rigid Phase | 47 |
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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 Ellicott City 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 granite porphyry 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 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