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Alluvion, is a Roman law method of acquisition of heritable property (land). The typical cause is sediment deposited by a river.This sediment, legally termed the accessory, accreses (i.e., merges with) a piece of land, the principal (operating a subtype of the Roman mode of acquisition by accession) and thus accedes to the ownership of the principal land over time.
Oceanic-continental convergence and creation of accretionary wedge Stages of accretion through time with accretionary wedge and volcanic island arc. In geology, accretion is a process by which material is added to a tectonic plate at a subduction zone, frequently on the edge of existing continental landmasses.
However, as a river gradually changes through accretion, the boundary changes with it. To prove that a change was avulsion and not accretion, it is sufficient, at least under Oklahoma law, for the owner of land that was washed away to point out approximately as much land added to the opposite bank as washed away from his bank. [2]
Accession might also be (from Latin accedere, to go to, approach), in law, a method of acquiring property adopted from Roman law (see: accessio), by which, in things that have a close connection with or dependence on one another, the property of the principal draws after it the property of the accessory, according to the principle, accessio cedet principali.
An example of an erosional avulsion is the 2006 avulsion of the Suncook River in New Hampshire, in which heavy rains caused flow levels to rise. The river level backed up behind an old mill dam, which produced a shallowly-sloping pool that overtopped a sand and gravel quarry, connected with a downstream section of channel, and cut a new shorter ...
A point bar is a depositional feature made of alluvium that accumulates on the inside bend of streams and rivers below the slip-off slope. Point bars are found in abundance in mature or meandering streams. They are crescent-shaped and located on the inside of a stream bend, being very similar to, though often smaller than, towheads, or river ...
Solidified lava flow in Hawaii Sedimentary layers in Badlands National Park, South Dakota Metamorphic rock, Nunavut, Canada. Geology (from Ancient Greek γῆ (gê) 'earth' and λoγία () 'study of, discourse') [1] [2] is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. [3]
In Barcelona, for example, the accretion of the coast was a natural process until the late Middle Ages, when harbor-building increased the rate of accretion. The port of Ephesus , one of the great cities of the Ionian Greeks in Asia Minor , was filled with sediment due to accretion from a nearby river; it is now 5 kilometers (3.1 mi) from the sea.