- published: 10 Jun 2014
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In geography and geology, a cliff is a vertical, or near vertical, rock exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually formed by rock that is resistant to erosion and weathering. Sedimentary rocks most likely to form cliffs include sandstone, limestone, chalk, and dolomite. Igneous rocks such as granite and basalt also often form cliffs.
An escarpment (or scarp) is a type of cliff, formed by the movement of a geologic fault, or a landslide.
Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, these are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus. Many cliffs also feature tributary waterfalls or rock shelters. Sometimes a cliff peters out at the end of a ridge, with tea tables or other types of rock columns remaining. Coastal erosion may lead to the formation of sea cliffs along a receding coastline.
Alexander (/ˈæləɡzˈændər/, /ˈæləɡzˈɑːndər/) is a common male first name, and less common surname derived from the Greek "Αλέξανδρος" (Aléxandros). The most famous is Alexander the Great, who created one of the largest empires in ancient history.
Etymologically, the name is derived from the Greek Ἀλέξανδρος (Aléxandros), meaning "Defender of the people" or "Defending men" and also, "Protector of men", a compound of the verb ἀλέξειν alexein, "to ward off, to avert, to defend" and the noun ἀνήρ anēr, "man" (GEN ἀνδρός andros). It is an example of the widespread motif of Greek (or Indo-European more generally) names expressing "battle-prowess", in this case the ability to withstand or push back an enemy battle line.
The earliest attested form of the name is the Mycenaean Greek feminine anthroponym 𐀀𐀩𐀏𐀭𐀅𐀨, a-re-ka-sa-da-ra (transcribed as Alexandra), written in the Linear B syllabic script.
The name was one of the titles ("epithets") given to the Greek goddess Hera and as such is usually taken to mean "one who comes to save warriors". In the Iliad, the character Paris is known also as Alexander. The name's popularity was spread throughout the Greek world by the military conquests of King Alexander III, commonly known as "Alexander the Great". Most later Alexanders in various countries were directly or indirectly named for him.
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