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33 Cards in this Set

  • Front
  • Back
Conversion of sediment into sedimentary rock by pressure or by the introduction of a mineral cement.
Solid mass of hydrogenous sediment, most commonly manganese or ferromanganese nodules and phosphorite nodules.
Deposit formed by the evaporation of ocean water.
Ooze composed mostly of the hard remains of silica-containing organisms.
siliceous ooze
Sediments of oceanic origin.
pelagic sediment
The zone of open water near shore, over the continental shelf.
neritic zone
Sampling device used to take shallow samples of the ocean bottom.
clamshell sampler
Sediment of biological origin. Organisms can deposit calcareous (calcium containing) or siliceous (silicon-containing) residue.
biogenous sediment
Ooze composed mostly of the hard remains of calcium-carbonate-containing organisms.
calcareous ooze
The depth at which the rate of accumulation of calcareous sediments equals the rate of dissolution of those sediments. Below this depth, sediment contains little or no calcium carbonate.
calcium carbonate compensation depth:
A naturally occurring inorganic crystalline material with a specific chemical composition and structure
One of a group of planktonic amoebae-like animals with a calcareous shell which contributes to biogenous sediments.
Sediment derived from the land and transported to the ocean by wind and flowing water
terrigenous sediment
Sediment formed directly by precipitation from seawater. Also called hydrogenous sediment.
authigenic sediment
Sediment of extraterrestrial origin.
cosmogenous sediment
The branch of geology concerned with the composition, origin, and areal and age relationships of stratified rocks.
Sediment formed directly by precipitation from seawater. Also called authigenic sediment.
hydrogenous sediment
The Earth's most abundant, successful, and efficient single-celled phytoplankton. Diatoms possess two interlocking valves made primarily of silica. The valves contribute to biogenous sediments.
Hydrogenous sediments formed when calcium carbonate precipitates from warmed seawater as pH rises, forming rounded grains around a shell fragment or other particle.
oolite sands
A terrigenous sediment deposited by a turbidity current; typically, coarse-grained layers of nearshore origin interleaved with finer sediments.
The study of the ocean's past.
Sediment particle between 0.004 and 0.062 millimeter in diameter.
Sediment of at least 30% biological origin.
Particles of organic or inorganic matter that accumulate in a loose, unconsolidated form.
Small planktonic mollusk with a calcareous shell, which contributes to biogenous sediments.
A sediment in which particles of many sizes are found.
poorly sorted sediment
A seabed-sampling device capable of punching through up to 25 meters (80 feet) of sediment and returning an intact plug of material.
piston corer
Sediment particle smaller than 0.004 millimeter in diameter; the smallest sediment size category.
A sediment in which particles are of uniform size.
well-sorted sediment
One of a group of usually planktonic amoebae-like animals with a siliceous shell, which contributes to biogenous sediments.
Sediment particle between 0.062 and 2 millimeters in diameter
A supposed living slime - primordial ooze - discovered by Thomas Henry Huxley in 1868. He believed that this animal jelly carpeted the deep floor of the ocean.
A very small planktonic alga carrying discs of calcium carbonate, which contributes to biogenous sediments.