Report of the Progress of the Geological Survey of the State of Virginia, for the Year ..., Volumes 1-2; Volumes 4-5S. Shepherd, 1836 - Geology |
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Common terms and phrases
Alumina and oxide argillaceous argillaceous slates band basin beds belt beneath blue marl Blue Ridge bluish boundary calcareous Carbonate of lime Carbonate of magnesia character Cheat river chlorite clay coal measures coal region coal seams coarse colour composed conglomerate containing creek deposite described diluvium distance district east eastern Eocene Epidotic exposed exposures extensive felspar felspathic ferruginous formation fossils fracture fragments geological Gneiss grain green sand greenish grey gypsum hills Hornblende inches James river Kanawha Kingwood layers limestone localities lower lying marl mass materials Mica micaceous middle secondary miles mineral Miocene mountain mouth nearly neighbourhood numerous observed occurs oxide of iron places points portion Potomac present quarry quartz region sand a trace sandstone sandy seen shales shells side Silica slate slaty strata stratum structure surface Talcose Tertiary thin tion tract upper valley variety veins Volatile matter western yellow