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 47
... occur in both igneous and metamorphic rocks but for ease of treatment they will be discussed separately . Jointing or fracturing of rocks in a more or less regular arrangement without serious movement of the sides may occur singly or in ...
... occur in both igneous and metamorphic rocks but for ease of treatment they will be discussed separately . Jointing or fracturing of rocks in a more or less regular arrangement without serious movement of the sides may occur singly or in ...
Seite 134
... occur in many places , and are well exposed on Principio Creek near Prin- cipio Furnace . LINEAR FLOW STRUCTURES Linear flow structures occur in all parts of the pluton . They result from the mutual parallel arrangement of minerals ...
... occur in many places , and are well exposed on Principio Creek near Prin- cipio Furnace . LINEAR FLOW STRUCTURES Linear flow structures occur in all parts of the pluton . They result from the mutual parallel arrangement of minerals ...
Seite 159
... occur in the gneiss along Gwynns Falls between its western limb and Claremont . These are largely conformable and in the southern portion are highly schistose . Smaller dikes , stringers , and offshoots from the larger dikes are ...
... occur in the gneiss along Gwynns Falls between its western limb and Claremont . These are largely conformable and in the southern portion are highly schistose . Smaller dikes , stringers , and offshoots from the larger dikes are ...
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