Geological Magazine, Volume 6; Volume 56Henry Woodward Cambridge University Press, 1919 - Geology |
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... Igneous rocks , Strathbogie and Lower Banffshire 365 Iron - ore and basic steel 389 Sketch - map of part of Southern Sikkim 399 View from Badamtam across the Valley of the Ranjit . • 401 Map of N. India showing localities connected with ...
... Igneous rocks , Strathbogie and Lower Banffshire 365 Iron - ore and basic steel 389 Sketch - map of part of Southern Sikkim 399 View from Badamtam across the Valley of the Ranjit . • 401 Map of N. India showing localities connected with ...
Page 8
... Rocks of Pennsylvania and Maryland , from the Susquehanna to the Potomac " : Amer . Journ . Sci . , ser . III , xliv ... Igneous Rocks of the Unkar Terrane , Grand Canyon of the Colorado , Arizona , " by Charles D. Walcott ; with ...
... Rocks of Pennsylvania and Maryland , from the Susquehanna to the Potomac " : Amer . Journ . Sci . , ser . III , xliv ... Igneous Rocks of the Unkar Terrane , Grand Canyon of the Colorado , Arizona , " by Charles D. Walcott ; with ...
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... rocks , the founders of the science , after a prolonged and bitter struggle ... igneous , resulting from deep - seated agencies acting from the earth's ... rocks , with their fossils giving a record , imperfect though it might be ...
... rocks , the founders of the science , after a prolonged and bitter struggle ... igneous , resulting from deep - seated agencies acting from the earth's ... rocks , with their fossils giving a record , imperfect though it might be ...
Page 40
... igneous rock . The shales as a whole , with but slight local deviations , strike north - east and south - west and dip north - westwards , the mean angle of dip being about 50 ° . The sedimentary rocks are divisible into : - 1. An ...
... igneous rock . The shales as a whole , with but slight local deviations , strike north - east and south - west and dip north - westwards , the mean angle of dip being about 50 ° . The sedimentary rocks are divisible into : - 1. An ...
Page 41
... igneous rocks , the order of which , commencing with the earliest , is as follows : - 1. A felsite with phenocrysts of micropegmatite , and quartz which shows good rhombohedral cleavage . 2. A series , hereafter called the " dark igneous ...
... igneous rocks , the order of which , commencing with the earliest , is as follows : - 1. A felsite with phenocrysts of micropegmatite , and quartz which shows good rhombohedral cleavage . 2. A series , hereafter called the " dark igneous ...
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Common terms and phrases
abundant Adorals Ammonites Ammonoids anhydrite appear bands beds Brachiopods breccias British calcareous calcite Cambrian Carboniferous cent Chalk character clay coal Coal-measures connexion contain Conulus Corwen Cretaceous crystals deposits described Devonian diabase district dolomitic dorsal Durham earthquake epidiorite evidence fault fauna feet felspar flint formation fossils fragments gabbro genera genus Geol GEOLOGICAL MAGAZINE Geological Survey geologists glacial gneiss grains granite gravels hornblende hornfels igneous rocks intrusion ironstone Journ later Lower magma Magnesian Limestone material Megacystis miles mineral Museum North occur oolitic origin outcrop paper periproct peristome Permian plates posterior potash present probably Pyrina pyroxene quarry quartz reef regarded sand Sandstone schists septa septum shales shell side silica similar siphuncle species specimens strata structure suggested surface Surv suture suture-line thickness tourmaline Trechmann Trilobites tuff Upper valley ventral volcanic Walcott zone