Loose soil or sediment that is eroded and redeposited in a non-marine setting
"Alluvial" redirects here. For the American racehorse, see Alluvial (horse). For the type of flow diagram, see Alluvial diagram.
Alluvium and adjacent constituentsAlluvium deposits in the Gamtoos Valley in South AfricaAn alluvial plain in Red Rock Canyon State Park (California)Alluvial river deposits in the Amazon Basin, near Autazes, AM, Brazil. The seasonal deposits are extremely fertile and crucial to subsistence farming in the Amazon Basin along the river banks.
Alluvium (from Latin alluvius, from alluere 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings.[1][2][3] Alluvium is also sometimes called alluvial deposit.[4][5] Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium.[1]
Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations.[6]
^ abJackson, Julia A., ed. (1997). "alluvium". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
^Glossary of Geological Terms. Geotech.org. Retrieved on 2012-02-12.
^Geology Dictionary – Alluvial, Aquiclude, Arkose. Geology.Com. Retrieved on 2012-02-12.
^Jackson, Julia A., ed. (1997). "alluvial deposit". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
^Allaby, Michael (2013). "alluvium". A dictionary of geology and earth sciences (Fourth ed.). Oxford: Oxford University Press. ISBN 9780199653065.
^Kidder, Tristram; Liu, Haiwang; Xu, Qinghai; Li, Minglin (July 2012). "The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China: THE YELLOW RIVER FLOODPLAIN, HENAN PROVINCE". Geoarchaeology. 27 (4): 324–343. doi:10.1002/gea.21411. S2CID 140587757.
Alluvium (from Latin alluvius, from alluere 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream...
setting. Alluvium is sand, clay, or other similar detrital material deposited by running water. The distinction between colluvium and alluvium relates...
Swartland Alluvium Fynbos is a critically endangered vegetation type that occurs on the high plains and mountains in the far south-west of the Western...
formed of alluvium in between two rivers known as Doab is found here. Bhangar : The flood plains formed due to deposition of older alluvium is known as...
are the result of an existing valley being filled with alluvium. The valley may fill with alluvium for many different reasons including: an influx in bed...
steepened reach that has not been covered in modern alluvium. Bedrock rivers very often contain alluvium on their beds; this material is important in eroding...
Indo-Gangetic Plain has one of the world's biggest stretches of fertile not-deep alluvium and are among the most densely populated areas of the world. The eastern...
as the solid matter carried by a stream. Streams can carry sediment, or alluvium. The amount of load it can carry (capacity) as well as the largest object...
mapped, the superficial deposits will be mapped instead (for example, as alluvium). Geology portal Geography portal Maps portal Minerals portal Jackson...
the east, sandy Thar Desert in the Thar desert in the west, Indo-ganetic alluvium in the north, Son-Narmada-Tapti in the south. It mainly has quartzite,...
Lourensford Alluvium Fynbos is a critically endangered vegetation type that is endemic to Cape Town. Though closest to Fynbos, it has characteristics of...
finer near the edges of the fan. Delta deposits, the third of type of alluvium, are finer sediments that are discharged from streams into lakes and eventually...
Grone, Anthony J. (1 January 1978). "Diagenesis in first-cycle desert alluvium of Cenozoic age, southwestern United States and northwestern Mexico". GSA...
6, 1962 Nevada Test Site Crater 635 ft (194 m) Alluvium 104 Storax A excavation experiment in alluvium to determine feasibility of using nuclear explosions...
Swartland Alluvium Fynbos – Vegetation type endemic to the high plains and mountains in the Western Cape, South Africa Swartland Alluvium Renosterveld...
two broad types, viz. the red ferruginous soil in the hill area and the alluvium in the valley. The valley soils generally contain loam, small rock fragments...
and widened the floodplain, which slowly buried the Roman settlement in alluvium and gradually moved new construction to higher ground; concurrently the...
the South Asia and its implications for correlation of late pleistocene alluvium". Quaternary Research. 40 (1): 10–19. Bibcode:1993QuRes..40...10A. doi:10...
In Madagascar, spessartines are exploited either in their bedrock or in alluvium. The orange garnets result from sodium-rich pegmatites. Spessartines are...
Mishmi Hills in Arunachal Pradesh These parts consist of thick gravel and alluvium. The valley lying between the Lesser Himalayas and Shivalik ranges are...
the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the...
emerged on the subcontinent in the western margins of the Indus River alluvium approximately 9,000 years ago, evolving gradually into the Indus Valley...
organic-mineral layers of highly leached soil resting on a red layer of alluvium. Red soils contain large amounts of clay and are generally derived from...
perfection. It will succeed in almost any soil but prefers a rich loam or black alluvium, and, though naturally a plant of rather dry places, will do well in moist...
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