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 60
... closely spaced as in slate , or farther apart as in gneiss , or schist . They may be due to rock texture ; that is , mineral arrangement , or caused by closely spaced fractures and they can occur in almost any rock at any time under ...
... closely spaced as in slate , or farther apart as in gneiss , or schist . They may be due to rock texture ; that is , mineral arrangement , or caused by closely spaced fractures and they can occur in almost any rock at any time under ...
Seite 134
... closely related to the emplacement of the mass . Certain flat joints which are independent of surface topography are also primary . Secondary joints were formed after consolidation of the pluton . They are widely distributed , very ...
... closely related to the emplacement of the mass . Certain flat joints which are independent of surface topography are also primary . Secondary joints were formed after consolidation of the pluton . They are widely distributed , very ...
Seite 165
... closely folded , as shown by frequent reverse dips . Its surface , however , shows a much more open folding and a much less irregular outline . It was recognized that the Setters formation followed this surface closely and is ...
... closely folded , as shown by frequent reverse dips . Its surface , however , shows a much more open folding and a much less irregular outline . It was recognized that the Setters formation followed this surface closely and is ...
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