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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.
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 ...
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
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]
Drumlins and ribbed moraines are also landforms left behind by retreating glaciers. Many depositional landforms result from sediment deposited or reshaped by meltwater and are referred to as fluvioglacial landforms. Fluvioglacial deposits differ from glacial till in that they were deposited by means of water, rather than the glacial itself, and ...
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.
An 1841 engraving of Cumorah (looking south), where Joseph Smith said he was given golden plates by an angel named Moroni, on the west side, near the peak.. Cumorah (/ k ə ˈ m ɔːr ə /; [2] also known as Mormon Hill, [3] [4] [5] Gold Bible Hill, [6] [7] and Inspiration Point) [3] is a drumlin in Palmyra, New York, United States, [8] where Joseph Smith said he found a set of golden plates ...