![]() In Roman architecture, a civic building for legal and other civic proceedings, rectangular in plan with an entrance usually on a long side. In Doric columns, the raised edges of the fluting.Ī railing held up by small posts, as on a staircase.Ī blanket designation for the art of the period 1600 to 1750. The lintel or lowest division of the entablature also called the epistyle. The molded projecting ends of the walls forming the pronaos or opisthodomos of an ancient Greek temple.Ī recess, usually semicircular, in the wall of a Roman basilica or at the east end of a church.Ī curved structural member that spans an opening and is generally composed of wedge-shaped blocks (voussoirs) that transmit the downward pressure laterally.See also thrust. The style of Greek building in which the colonnade was placed across both the front and back, but not along the sides. In Greek mythology, the legendary battle between the Greeks and Amazons. The base, which was inscripted with the artist's name, is now lost. Sculptor of Aphrodite or Venus de Milo, ca. The portion of a basilica flanking the nave and separated from it by a row of columns or piers. Greek, “high city.” In ancient Greece, usually the site of the city’s most important temple(s).Īn open square or space used for public meetings or business in ancient Greek cities. Incised meander in the Tarn River, Sant Chely du Tarn, France (Source: Wikipedia).The uppermost portion of the capital of a column. They can be due to a fall in sea level or tectonic uplift. They formed as the river cut down its bed into the bedrock. Incised or entrenched meanders: they are found in narrow, steep valleys.Free meanders: they form where the gradient is gentle, in wide river floodplains, which allow for large meander amplitude.įree meander in the Cuckmere River in England (Source: Wikipedia).The abandoned meander creates a body of water known as an oxbow lake. Abandoned meanders can form during a flood or when the river cannot carry excess sediment through the bend, so the river finds a new path to flow. Over time, the ends of the curve formed by the meander become very close together and the meander is cut off and abandoned (abandoned or cutoff meander). ![]() ![]() Meanders change position by eroding sideways and slightly downstream. In addition, it depends on other variables such as the lithology of the river margins, the discharge, whether there is a floodplain or not, etc. Meanders move over time through simultaneous processes of erosion and sedimentation. The development of meanders increases the length of the river and thus decreases its slope. They form more easily in floodplains with a low gradient. How are meanders formed?Ī meander is formed when the water flow velocity diminishes in the river, thus forming curves or meanders. When they are above the water level, they can be recognised forming ridges. As sediments deposit in the inside of a meander, point bars become larger, composed of sediment that is well sorted. Point bars are crescent-shaped deposits of sand and gravel that accumulate on the inside of a river bend. A meander forms as a watercourse erodes the sediments of an outer, concave bank and deposits sediments on an inner, convex bank (point bar), leading to a meandering channel. Meanders are curves in the middle-lower course of a river. ![]()
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