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A drumlin, from the Irish word droimnín ("little ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg [1] [2] formed by glacial ice acting on underlying unconsolidated till or ground moraine.
Drumlins may be composed of stratified or unstratified till ranging in size from sand to boulders. The non-uniformity of drumlin composition is representative of the diverse origin of the sediments. [38] Banding or layering of till may occur in drumlins as till accumulates on the drumlin formation in successive layers. [38]
Drumlin is a linguistic diminutive of drum, and it means a small rounded hill of glacial formation, often seen in series (OED). A landscape of many drumlins occurs in some parts of Ireland, including counties Cavan and Armagh. Drumlin is an established technical word in geology, but drum is almost never used. drisheen (from drisín or drúishin ...
The Irish word was and is used particularly to describe long sinuous ridges, which are now known to be deposits of fluvio-glacial material. The best-known example of such an eiscir is the Eiscir Riada , which runs nearly the whole width of Ireland from Dublin to Galway , a distance of 200 km (120 mi), and is still closely followed by the main ...
The branch of geology and mineralogy that studies natural and artificial gemstones. gemstone. Also called a gem, fine gem, jewel, precious stone, or semi-precious stone. geogenic Of geologic origin – Resulting from naturally occurring geological processes. geologic map A special-purpose map made to show geological features. geological time scale
The following are lists of words in the English language that are known as "loanwords" or "borrowings," which are derived from other languages.. For Old English-derived words, see List of English words of Old English origin.
The word glacier is a loanword from French and goes back, via Franco-Provençal, to the Vulgar Latin glaciārium, derived from the Late Latin glacia, and ultimately Latin glaciēs, meaning "ice". [8] The processes and features caused by or related to glaciers are referred to as glacial.
The Namibian drumlins are a geologic feature in Namibia. Since drumlins only occur as the result of glaciers, researchers determined they are the relic of an ice age in the late Paleozoic Era. [1] The researchers measured the supposed rock drumlins with satellite imagery available on the Internet.