detrital sediments - определение. Что такое detrital sediments
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Что (кто) такое detrital sediments - определение

PARTICULATE MATTER THAT IS DEPOSITED ON THE SURFACE OF LAND
Sediments; Detrital sediment; Sea Sediment; Sedements; Sedimented; Sedimentary soil; Sedimentary layer; Lake sediment; Fluviatile sediment; Sediment (geology)
  • Pennsylvanian]]), Coalburn Pit, near Thorburn, Nova Scotia.
  • [[Holocene]] [[eolianite]] and a carbonate beach on [[Long Island, Bahamas]]
  • Glacial sediments from Montana
  • Glacial transport of boulders. These boulders will be deposited as the glacier retreats.
  • [[Hjulström curve]]: the velocities of currents required for erosion, transportation, and deposition (sedimentation) of sediment particles of different sizes}}
  • Modern asymmetric ripples developed in sand on the floor of the Hunter River, New South Wales, Australia. Flow direction is from right to left.
  • Comparison chart for evaluating roundness of sediment grains
  • rounding]] (horizontal).
  • Sediment in the [[Gulf of Mexico]]
  • Sediment off the [[Yucatán Peninsula]]
  • River discharging sediment into the ocean}}
  • Sinuous-crested dunes exposed at low tide in the Cornwallis River near Wolfville, Nova Scotia
  • Sediment builds up on human-made breakwaters because they reduce the speed of water flow, so the stream cannot carry as much sediment load.

Cyclic sediments         
  • High Atlas middle liassic carbonate platform of Morocco and succession of regressive, autocyclic, "shallowing upward" metric sequences.
  • Model of a virtual "shallowing upward" metric sequence observed on carbonate platforms all along the south tethyan margin (about 10.000km) during the Liassic. (Micro)fossils are identical from the Maghreb till Oman and furtheron.
  • "shallowing upward" sequences from two sections distant of 230 km; note the hurricane (tempestites and tsunami ?)levels with abundant displaced foraminifera on supratidal flat. Middle Liassic, Morocco.
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SEQUENCES OF SEDIMENTARY ROCKS THAT ARE CHARACTERISED BY REPETITIVE PATTERNS OF DIFFERENT ROCK TYPES (STRATA) OR FACIES WITHIN THE SEQUENCE
Cyclic sedimentation; Cyclic sediment; Rhythmic sediment; Rhythmic sediments; Depositional cycle
Cyclic sediments (also called rhythmic sediments) are sequences of sedimentary rocks that are characterised by repetitive patterns of different rock types (strata) or facies within the sequence. Processes that generate sedimentary cyclicity can be either autocyclic or allocyclic, and can result in piles of sedimentary cycles hundreds or even thousands of metres thick.
Sediment         
·noun The material of which sedimentary rocks are formed.
II. Sediment ·noun The matter which subsides to the bottom, frrom water or any other liquid; settlings; lees; dregs.
sediment         
(sediments)
Sediment is solid material that settles at the bottom of a liquid, especially earth and pieces of rock that have been carried along and then left somewhere by water, ice, or wind.
Many organisms that die in the sea are soon buried by sediment.
N-VAR

Википедия

Sediment

Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.

Sediments are most often transported by water (fluvial processes), but also wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice-transported sediments.