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 71
... Amygdules or vesicules in volcanic rocks often are beautifully aligned . In Frederick County , Maryland , large masses of volcanic rocks are exposed and occur as slaty , purple or green schists with a very distinct narrowly - spaced ...
... Amygdules or vesicules in volcanic rocks often are beautifully aligned . In Frederick County , Maryland , large masses of volcanic rocks are exposed and occur as slaty , purple or green schists with a very distinct narrowly - spaced ...
Seite 195
... amygdules or the groundmass . It differs from the typical massive amygdaloid in its darker color . The rock is crowded with amygdules of feldspar and epidote which have a tendency toward a concentric structure with the feldspar in the ...
... amygdules or the groundmass . It differs from the typical massive amygdaloid in its darker color . The rock is crowded with amygdules of feldspar and epidote which have a tendency toward a concentric structure with the feldspar in the ...
Seite 196
... amygdules and magnetite metacrysts oc- curring in the amygdules . SHEARED AMYGDALOIDS The schistose type of amygdaloid is so intimately mixed with the mas- sive type that the two can not be separated in mapping . The amygdules are no ...
... amygdules and magnetite metacrysts oc- curring in the amygdules . SHEARED AMYGDALOIDS The schistose type of amygdaloid is so intimately mixed with the mas- sive type that the two can not be separated in mapping . The amygdules are no ...
Inhalt
The Application of Recent Structural Methods in the Interpretation | 27 |
General Statement | 49 |
Types and Manner of Producing folds | 55 |
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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 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 Upper Cretaceous volcanics wall rock Wissahickon schist Woodstock dome