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sediments and form
These channels are the main transport pathway for sediments to the deep sea where they form sedimentary deposits.
Diego Garcia is of sufficient width to minimise tidal fluctuations in the aquifer, and the rainfall ( in excess of 102. 5 inches / 260 cm per year on average ) is sufficient in amount and periodicity for the fresh water to form a series of convex, fresh-water, Ghyben-Herzberg lenses floating on the heavier salt water in the saturated sediments.
In his paper, he explained his theory that the Earth must be much older than had previously been supposed in order to allow enough time for mountains to be eroded and for sediments to form new rocks at the bottom of the sea, which in turn were raised up to become dry land.
These sediments accumulated to form a sedimentary basin, and make up the island's bedrock.
More commonly, these sediments lose their original structure through the mixture processes associated to the subglacial transport and they solely contribute to form the more or less uniform matrix of the till.
The silts received from the middle reaches form sediments here, elevating the river bed.
Thus, the final form of the majority of old orogenic belts is a long arcuate strip of crystalline metamorphic rocks sequentially below younger sediments which are thrust atop them and dip away from the orogenic core.
This suggests that sizeable amounts of dissolved oxygen were available to form sediments rich in Fe ( III ).
Only after this flood, the creation of a spit from sediments began to form the current characteristical shape of Sylt.
Waves, generated by storms, wind, or fast moving motor craft, cause coastal erosion, which may take the form of long-term losses of sediment and rocks, or merely the temporary redistribution of coastal sediments ; erosion in one location may result in accretion nearby.
River deltas form when a river carrying sediment reaches either ( 1 ) a body of standing water, such as a lake, ocean, or reservoir, ( 2 ) another river that cannot remove the sediment quickly enough to stop delta formation, or ( 3 ) an inland region where the water spreads out and deposits sediments.
Sedimentological conditions are recorded within the sediments as they are laid down ; the form of the sediments at present reflects the events of the past and all events which affect the sediments, from the source of the sedimentary material to the stresses enacted upon them after diagenesis are available for study.
Alluvium ( from the Latin, alluvius, from alluere, " to wash against ") is loose, unconsolidated ( not cemented together into a solid rock ) soil or sediments, which has been eroded, reshaped by water in some form, and redeposited in a non-marine setting.
Beaumaris Castle was built at around sea-level on top of the till and other sediments that form the local coastline, and was constructed from local Anglesey stone from within of the site, with some stones having brought along the coast by ship, for example from the limestone quarries at Penmon.
These form a small component of marine sediments, and are known as microfossils from as far back as the early Cretaceous.
Alpine meadows form where sediments from the weathering of rocks has produced soils well-developed enough to support grasses and sedges.
During several million years of the lake's existence, sediments were collecting at the bottom in the form of saline muds, gravels from nearby mountains, and ashfalls from the then-active Black Mountain volcanic field.
These sediments combined to form what we today call the Furnace Creek Formation.
A specific " large-scale " form of slow sand filter is the process of bank filtration, in which natural sediments in a riverbank are used to provide a first stage of contaminant filtration.
Badlands form in semi-arid or arid regions with infrequent but intense rain-showers, sparse vegetation, and soft sediments: a recipe for massive erosion.
Traces are better known in their fossilised form than in modern sediments.
) Some of the layers show great variation, showing how an initial volcanic eruption would result in larger sediments rapidly settling to create course-grained tuff, followed by settling of much finer material to form much smoother dust-tuffs – smooth light-grey to creamy coloured rocks seen to the north of Old John.
They sink through the water column to form an important part of the deep-sea sediments ( depending on the water depth ).

sediments and Fossil
The central Snake River plain is similar to the eastern plain, but differs by having thick sections of interbedded lacustrine ( lake ) and fluvial ( stream ) sediments, including the Hagerman Fossil Beds.

sediments and Group
Chalk is not easily consolidated and the Chalk Group still consists of loose sediments in many places.
Ausia fenestrata is a curious Ediacaran period ( 630 – 542 million years ago ) fossil represented by only one specimen 5 cm long from the Nama Group of Namibia and it has similarity to Burykhia from Ediacaran ( Vendian ) siliciclastic sediments exposed on the Syuzma River of northern Russia.
The sediments of the Visingsö Group have been preserved within the Lake Vättern graben structure.
The remediation of the former Union Carbide site, the former Allied Feeds site and a strip of heavily dioxin contaminated sediments in Homebush Bay, have been the subject of extensive analysis, investigations and community activism, including by the Rhodes Peninsula Group.
The Ogallala Group is a late Neogene ( Pliocene ) sheet of sediments spread over the area east of the Rocky Mountains from Wyoming to Texas, rather recently in a geological sense, when the Colorado Plateau and Rocky Mountain regions were elevated from near sea level to about their current elevations.
Evaporating, the minerals were left behind to cement the otherwise fairly loose sandy sediments of the Ogallala Group.
This is thought to have formed during Neogene to Quaternary weathering by the silicification of Upper Paleocene Lambeth Group sediments, resulting from acid leaching.
Since the Jurassic rocks occurred after the Triassic sediments of the Dockum Group, they could not have been reworked into the Dockum sediments as inclusions.
The plain of Lafonia is constituted by arenaceous sediments of the Lafonia Group.
Between these two blocks lies the uplifted horst block of West Rand Group sediments with no reef preserved.
The strata, in which it occurs, is a 3. 0 to 3. 1 billion year-old, over 2 kilometer-thick assemblage of arenaceous sediments, conglomerates, grits, basic volcanics, tuffs, coarse pyroclastic rocks and quartzite called the " Dominion Group ".
The Dyke is formed in rocks of the Chalk Group which originated as marine sediments during the Cretaceous period.
The latter fault zone is the eastern edge of the metamorphosed Proterozoic rocks of the Kanmantoo Group ; to the east lie the younger sediments of the Murray River.

sediments and accumulated
During the process, sediments were accumulated north and south of the island.
These were formed by accumulated sediments brought down by the rivers Aude, Orb and Hérault.
Thermoluminescence ( TL ) dating is the determination, by means of measuring the accumulated radiation dose, of the time elapsed since material containing crystalline minerals was either heated ( lava, ceramics ) or exposed to sunlight ( sediments ).
Unconsolidated to poorly cemented alluvial materials that have accumulated as valley-filling sediments in major river valleys and geologically subsiding structural basins are included among the most productive sources of groundwater.
Like many similar marine deposits, the sediments, which accumulated within the Champlain Sea lack the physical characteristics ; i. e. sedimentary structures, interlayering, and textures, that characterize sediments deposited by a mega-tsunami.
If the accumulated sediments are predominantly sand, then the island is called a cay ; if they are predominantly gravel, the island is called a motu.
The permafrost periodically developed in Late Pleistocene loess, solifluction, pond, and stream sediments as they accumulated.
The radiocarbon dating of bones, ivory, and plants ; optically stimulated luminescence dating of enclosing sediments ; and uranium-thorium dating of associated peats demonstrate that the bones and ivory, which are found within some of the New Siberian Islands, accumulated over a period of some 200, 000 years.
These sediments are cemented by permafrost and have accumulated periodically over the last 200, 000 years.
The oldest known Pleistocene sediments exposed in the southern sea cliffs of Bolshoy Lyakhovsky Island consist of Saalian sediments, which accumulated between 200, 000 to 120, 000 years ago.
The lower part of these sediments consist of ice-rich, silty and silty-sandy sediments that accumulated as an Saalian ice complex between 200, 000 to 170, 000 years ago.
The presence of ice belts, reticulated ice interlayers, and wide, round-shouldered ice wedges indicate that permafrost formed in these sediments as they accumulated.
These loess-like sediments accumulated within floodplains and lakes.
As they accumulated between 170, 000 and 120, 000 years ago, ice wedge polygons formed in these sediments as the result of extremely cold and dry conditions.
Typically, 15 to 20 meters of Middle Weichselian ice complex deposits, which consist largely of aeolian sediments that accumulated 50, 000 to 28, 000 years ago, overlie the Early Weichselian sediments.
These sediments accumulated within a swampy, poorly drained habitat, which existed under an extremely cold continental climate.
The radiocarbon dates from the cement demonstrate that the beachrock composing the Bimini Road formed about 2, 800 radiocarbon years ago by the cementation of pre-existing sediments that accumulated about 1, 300 years earlier.
The marine limestone underlying the Bimini Road dates to the Sangamonian Stage, the last interglacial, when sea level was last high enough for the marine sediments, now lithified into limestone, to have accumulated.

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