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Aeolian processes are those processes of erosion, transport, and deposition of sediments that are caused by wind at or near the surface of the earth. [1] Sediment deposits produced by the action of wind and the sedimentary structures characteristic of these deposits are also described as aeolian.
Aeolian landforms, or Eolian landforms, are produced by either the erosive or depositive action of wind. These features may be built up from sand or snow , [ 1 ] or eroded into rock, snow, or ice. Aeolian landforms are commonly observed in sandy deserts and on frozen lakes or sea ice and have been observed and studied around Earth and on other ...
A diagram of various depositional environments. In geology, depositional environment or sedimentary environment describes the combination of physical, chemical, and biological processes associated with the deposition of a particular type of sediment and, therefore, the rock types that will be formed after lithification, if the sediment is preserved in the rock record.
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Aeolis (/ ˈ iː ə l ɪ s /; Ancient Greek: Αἰολίς, romanized: Aiolís), or Aeolia (/ iː ˈ oʊ l i ə /; Ancient Greek: Αἰολία, romanized: Aiolía), was an area that comprised the west and northwestern region of Asia Minor (modern-day Turkey), mostly along the coast, and also several offshore islands (particularly Lesbos), where the Aeolian Greek city-states were located.
Although the deposits of all four types of sediment support mechanisms are found in nature, pure grain flows are largely restricted to aeolian settings, whereas subaqueous environments are characterized by a spectrum of flow types with debris flows and mud flows on one end of the spectrum, and high-density and low-density turbidity currents on the other end.
The name is from the Spanish word placer, meaning "alluvial sand". Placer mining is an important source of gold, and was the main technique used in the early years of many gold rushes, including the California Gold Rush. Types of placer deposits include alluvium, eluvium, beach placers, aeolian placers and paleo-placers. [2]
The name Aeolian (lit. ' of the wind ') derives from the Greek name Aeolus, aiolos (αίολος) literally meaning "changeable", "quickly moving". [7] They spoke an Ancient Greek dialect that is referred to as Aeolic. [2] According to Herodotus, it was said that the Aeolians were previously called Pelasgians. [8]
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