“progradation”的英文意思_释义_用法

单词

progradation

释义

progradation Physical Geogr.|prəʊgrəˈdeɪʃən|
[f. prograde v. + -ation.]
The seaward advance of a beach or coastline as a result of the accumulation of river-borne sediment or beach material.
1909W. M. Davis in Geogr. Jrnl. XXXIV. 303 There is good reason for regarding the action of the streams in terracing or degrading the former valley floors as the cause of the progradation of the strand-plain.1937Wooldridge & Morgan Physical Basis Geogr. xxi. 332 Progradation may result from the extensive deposition of river alluvium, as in deltas.1967Oceanogr. & Marine Biol. V. 130 Brothers (1954) concluded that dune formation during subsequent periods of shoreline progradation added great quantities of sand to the foreland around Auckland.1971Nature 10 Sept. 91/2 The virtual elimination of shelf seas, during a prolonged phase of tectonic stability and peneplanation following rapid build-up of evaporites and progradation of coastal plain sediments.

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