 | William Barton Rogers - Geology - 1884 - 880 pages
...strata. The rock is very often of a gray colour, hence the name grau, being German for gray, and waelce being a provincial miner's term. Greenland. — Beds...Hornblende and Felspar. Grit. — A provincial name for a coarse grained sandstone. Gyptum. — A mineral composed of lime and sulphuric acid, hence called also... | |
 | William Barton Rogers - Geology - 1884 - 878 pages
...hence the name grau, being German for gray, and wacke being a provincial miner's term. Greensand. — Beds of sand, sandstone, limestone, belonging to the...Hornblende and Felspar. Grit. — A provincial name for a coarse grained sandstone. Gypsum. — A mineral composed of lime and sulphuric acid, hence called also... | |
 | William Barton Rogers - Geology - 1884 - 880 pages
...hence tho name grau, being German for gray, and waclce being a provincial miner's term. Greeruand. — Beds of sand, sandstone, limestone, belonging to the...through the substance of the sandstone, limestone, &e. Greenstone. — A variety of Trap, composed of Hornblende and Felspar. Grit. — A provincial name... | |
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Beds of sand, sandstone, limestone, belonging to the Cretaceous period. The name is given to these beds because they often, but not always, contain an abundance of green earth or chlorite scattered through the substance of the sandstone, limestone, &c.... 
