Oxbow

An oxbow is a U-shaped metal pole (or larger wooden frame) that fits the underside and the sides of the neck of an ox or bullock. A bow pin holds it in place.

Developed form

Its upper ends pass through a purpose-drilled hole through the bar of the yoke that is held in place into the yoke with a metal screw or key, called a bow pin. Where wood is used it is most often hardwood steamed into shape, especially elm, hickory or willow. A ring, enabling left/right movement controlled from the centre is attached by a plate to the centre underside of a wooden yoke to enable a pair of bullocks/oxen to be chained to any other pairs in a team and to be hitched to the load behind the animal team.

Uses of the yoke and oxbows

The load is a plough or any other dragged, non-motorised, field agricultural machinery.

Alternative

Wooden staves can be used instead with a yoke, which is then termed a withers yoke, named after animals with high backs (withers) (e.g. zebu cattle) which pull mostly the on yoke part of the equipment, not as greatly on the bow shape borne by the stronger front quarters of oxen and bullocks.

Oxbow lake

An oxbow lake is a U-shaped body of water that forms when a wide meander from the main stem of a river is cut off, creating a free-standing body of water. This landform is so named for its distinctive curved shape, resembling the bow pin of an oxbow. In Australia, an oxbow lake is known as a billabong, from the indigenous language Wiradjuri. In south Texas, oxbows left by the Rio Grande are called resacas.

The word "oxbow" can also refer to a U-shaped bend in a river or stream, whether or not it is cut off from the main stream.

Geology

An oxbow lake forms when a river creates a meander, due to the river's eroding the bank through hydraulic action, abrasion and erosion. After a long period of time, the meander becomes very curved, and eventually the neck of the meander becomes narrower and the river cuts through the neck during a flood, cutting off the meander and forming an oxbow lake.

When a river reaches a low-lying plain, often in its final course to the sea or a lake, it meanders widely. In the vicinity of a river bend, deposition occurs on the convex bank (the bank with the smaller radius). In contrast, both lateral erosion and undercutting occur on the cut bank or concave bank (the bank with the greater radius.) Continuous deposition on the convex bank and erosion of the concave bank of a meandering river cause the formation of a very pronounced meander with two concave banks getting closer. The narrow neck of land between the two neighboring concave banks is finally cut through, either by lateral erosion of the two concave banks or by the strong currents of a flood. When this happens, a new straighter river channel is created and an abandoned meander loop, called a cutoff, is formed. When deposition finally seals off the cutoff from the river channel, an oxbow lake is formed. This process can occur over a time scale from a few years to several decades and may sometimes become essentially static.

Oxbow (surfwear)

Oxbow is a brand of clothing and athletic equipment. Since its creation in 1985 in Pont-Audemer, France, Oxbow has positioned itself in the world of boardsports as an international brand. Oxbow restarted the World Longboard Championship in 1992, and sponsors athletes such as surfer Laird Hamilton and windsurfer Jason Polakow. Oxbow's Back to Powder winter event draws some of the best skiers and snowboarders in the world. The business is involved in five sports: surfing, windsurfing, kitesurfing, snowboarding, and skiing. Oxbow became an affiliate of the French group Lafuma in 2005.

Team Oxbow

External links

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