42 A GLOSSARY OF MINING AND METALI>URGICAL TERMS. PROFESSOR J. P. LESLEYS PROVISIONAL NOMENCLATURE OF THE SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA. *
A GLOSSARY OF MINIXG AND >f ETAI.I.URGICAL TERMS. 43 3a. Calci/erous. S<strong>and</strong>j' magnesian limestone, calcareous s<strong>and</strong>stone. 3b. Quebec. S<strong>and</strong>stone, limestone conglomerate, black slate 3e. Chnzy. Limestone, chert. 4a Trenion. Liniestone, buff <strong>and</strong> blue ; dolomite carrying lead ore deposits ; brown-bematite beds. 4b. Utlca. Dark carbonaceous slate ; impure limestone. 4c. Hudson River. Slate, shale, clay, grit. 5a. Medina. Conglomerate ; argillaceous s<strong>and</strong>stone. 5b. Clinfon. S<strong>and</strong>stone, shale, conglomerate, limestone, fossiliferous red hem- atite, or oolitic iron-ore bed. 5c. Kiagara. Clay shale ; limestone. t>. Salina. Red shale, gypseous shale, hydraulic lime, salt. 7. Lower Helderberg. Limestone, shaly or compact, <strong>and</strong> fossiliferous. 8. Oriskany. S<strong>and</strong>stone. 9. Corniferous or Upper Helderberg. Principally limestone. 9a. Caudu-galli. Fine-grained calcareous <strong>and</strong> argillaceous, drab or brownish s<strong>and</strong>stone ; peculiar fossils. 9b. Schoharie Grit. Fine-grained calcareous grit, similar to 9a, but with dif- fering fossils. 9c. Oncndaga, <strong>and</strong> 9d. Corniferous. Gra}-, blue, black limestone. At the top <strong>of</strong> 9d occur the Marcellus iron ores (carbonate). 10a. Marcellus. Black or dark-brown bituminous <strong>and</strong> pyritiferous shales. In 10a <strong>and</strong> 9d occur the petroleum deposits <strong>of</strong> Canada. 10b. Hnrnilioii. Slate, shale, s<strong>and</strong>stone, calcareous <strong>and</strong> argillaceous. 10b. Tally. Impure dark limestone. 10c. Genesee Black claj' slate. 11a. Portage. Green <strong>and</strong> black s<strong>and</strong>y <strong>and</strong> slaty shales, s<strong>and</strong>stone, flagstone. lib. Chemung. Thin-bedded greenish s<strong>and</strong>stones <strong>and</strong> flagstones, with inter- vening shales, <strong>and</strong> rarely beds <strong>of</strong> impure limestone. 12. Catsklll. Red, gray s<strong>and</strong>stone, grindstone grit, greenish shale, conglom- erate. 13a. Lower Subcarboniferous. S<strong>and</strong>stone, limestone, small local coal beds. 13b. Upper Subcarboniferous. Red shale, red <strong>and</strong> gray s<strong>and</strong>stone, blue lime- stone. 14a. Millstone grit. White or yellow s<strong>and</strong>stone, <strong>and</strong> conglomerate <strong>of</strong> quartz j)ebbles. 14b. <strong>and</strong> 14c. Coal measures. Fire-clay, shale, s<strong>and</strong>stone, conglomerate, lime- stone, bituminous coal, anthracite, iron ore, salt. 15. Permian. Limestone, s<strong>and</strong>stone, marl, shale. 16. Triassic. Red s<strong>and</strong>stone, red shale, conglomerate, lignite, trap dikes, cop- per ore, coal. 17. Jurassic. Marl, limestone, probably the gold-bearing slates <strong>of</strong> Cali- lornia. 18. Cretaceous. Earthy beds <strong>of</strong> s<strong>and</strong>, marl, clay, limestone, chalk, lignite. 19. Tertiary. Earthy s<strong>and</strong>, clay, marl, limestone, s<strong>and</strong>stone. 20. (Quaternary. S<strong>and</strong>, pebbles, boulders, clay, diluvium, alluvium ; gravel <strong>and</strong> placer tin <strong>and</strong> gold deposits. Note.—The jirimary <strong>and</strong> crystalline schistose rocks contain the larger number <strong>of</strong> mineral veins. The ancient magnesian limestones (probably Devonian) arc characterized in many localities by deposits <strong>of</strong> argentiferous lead ore <strong>and</strong> <strong>of</strong> zinc ore.
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