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Diluvial terraces on Katun River Altai Scabland, Altai Republic Giant current ripples in the Kuray Basin, Altai, Russia. Diluvium is an archaic term applied during the 1800s to widespread surficial deposits of sediments that could not be explained by the historic action of rivers and seas.
Adam Sedgwick, Woodwardian Professor of Geology at Cambridge, presented two supportive papers in 1825, "On the origin of alluvial and diluvial deposits", and "On diluvial formations". At this time, most of what Sedgwick called "The English school of geologists" distinguished superficial deposits which were "diluvial", showing "great irregular ...
At the same time, the term "alluvium" came to mean all sediment deposits due to running water on plains. The definition gradually expanded to include deposits in estuaries, coasts, and young rock of marine and fluvial origin. [8] Alluvium and diluvium were grouped as colluvium in the late 19th century. "Colluvium" is now generally understood as ...
Diluvial terraces on Katun River, Altai Republic Giant current ripples in the Kuray Basin, Altai, Russia. The Altai flood refers to the cataclysmic flood(s) that, according to some geomorphologists, swept along the Katun River in the Altai Republic at the end of the last ice age.
These deposits are typically very far underground in ancient riverbeds, beaches, or slopes. [7] The Witwatersrand Basin, South Africa is the largest gold deposit in the world and is considered a paleo-placer, it has produced over 1.5 billion ounces of gold. [7] The Witwatersrand Basin is considered an ancient alluvial placer. [7]
In geography and geology, fluvial sediment processes or fluvial sediment transport are associated with rivers and streams and the deposits and landforms created by sediments. It can result in the formation of ripples and dunes , in fractal -shaped patterns of erosion, in complex patterns of natural river systems, and in the development of ...
Fluvial terraces are elongated terraces that flank the sides of floodplains and fluvial valleys all over the world. They consist of a relatively level strip of land, called a "tread", separated from either an adjacent floodplain, other fluvial terraces, or uplands by distinctly steeper strips of land called "risers".
The foredeep itself is filled with thick Miocene deposits of clays, argillites, calcareous clays, and sandstones covered by diluvial and alluvial deposits. At the end of the Pliocene epoch the region was an accumulative-denudational peneplain covered by fluvial deposits of sand, silt, and clay originating from