calcareous sediments
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Calcareous — refers to a sediment, sedimentary rock, or soil type which is formed from or contains a high proportion of calcium carbonate in the form of calcite or aragonite. Calcareous rock also refers to sediments derived near land. The carbon content is… … Wikipedia
Pelagic sediments — Pelagic sediment or pelagite is a fine grained sediment that has accumulated by the settling of particles through the water column to the ocean floor beneath the open ocean far from land. These particles consist primarily of either the… … Wikipedia
Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… … Universalium
Schist — The schists constitute a group of medium grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Quartz often occurs in drawn out grains to such an… … Wikipedia
Carbonate Compensation Depth — (CCD) is the depth in the oceans below which the rate of supply of calcium carbonate (calcite and aragonite) equals the rate of solvation, such that no calcium carbonate is preserved. Calcium carbonate is essentially insoluble in sea surface… … Wikipedia
cal|car´e|ous|ness — cal|car|e|ous «kal KAIR ee uhs», adjective. 1. of or containing lime, calcium carbonate, or limestone: »The rate of deposition of the calcareous sediments formed from Foraminifera shells is faster with warmer water (Science News Letter). 2. of or … Useful english dictionary
cal|car´e|ous|ly — cal|car|e|ous «kal KAIR ee uhs», adjective. 1. of or containing lime, calcium carbonate, or limestone: »The rate of deposition of the calcareous sediments formed from Foraminifera shells is faster with warmer water (Science News Letter). 2. of or … Useful english dictionary
cal|car|e|ous — «kal KAIR ee uhs», adjective. 1. of or containing lime, calcium carbonate, or limestone: »The rate of deposition of the calcareous sediments formed from Foraminifera shells is faster with warmer water (Science News Letter). 2. of or containing… … Useful english dictionary
Lapilli — is a size classification term for tephra, which is material that falls out of the air during a volcanic eruption. Lapilli (singular: lapillus) means little stones in Latin. They are in some senses similar to ooids or pisoids in calcareous… … Wikipedia
Mines and Geosciences Bureau Region 13 (Philippines) — DENR Mines and Geosciences Bureau Region 13 Kawanihan ng Pagmimina at Agham Panlupa Bureau/Regional overview Headquarters DENR MGB Compound, Km. 2 National Highway, Surgao City Annual budget Personal Services P25.14 million (2011) Bureau/Regional … Wikipedia
Wollastonite — Infobox mineral name = Wollastonite category = Silicate mineral boxwidth = boxbgcolor = caption = formula = Calcium silicate, CaSiO3 molweight = color = white, colorless or gray habit = rare tabular crystals commonly massive in lamellar,… … Wikipedia
