WebDescription: Nashville Group - Bigby-Cannon Limestone - Brownish-gray phosphatic calcarenite and light-gray to brownish-gray, cryptograined to medium- grained, even … WebDetailed sections from auger holes and outcrops in the Bethera ...

Hand Sample 6524 - ScienceBase-Catalog

WebThe calcarenite is gray and the layers are 0.8–6 dm thick ( Fig. 13.15 A and B ). The grains are mostly (30%–65%) composed of micrite (the cement is also micrite), but larger … Weblimestone, sedimentary rock composed mainly of calcium carbonate (CaCO 3 ), usually in the form of calcite or aragonite. It may contain considerable amounts of magnesium carbonate (dolomite) as well; minor constituents also commonly present include clay, iron carbonate, feldspar, pyrite, and quartz. sandstone: laminated peak district stepping stones walk

Skeletal carbonate productivity and phosphogenesis at

WebConsists of cobble- to pebble-sized, sandy, calcareous clasts, usually subrounded to well rounded and often coated with phosphate and glauconite. Occasional quartz pebbles and flat clay chips also present, along with very fine sand, glauconite, and phosphate in cream-colored micrite matrix. WebPhosphate transport into cells is primarily mediated by NaPi cotransporters, of which there are 3 types. The type I and II NaPi cotransporters in kidney and intestinal epithelium play … WebHand Sample from Albert V. Carozzi collection Description: Phosphatic calcarenite under Ohio shale Age: Upper Devonian Locality: Scott Co., Quarry, IN Heading Info: Phosphorites, … peak district view points