An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. sedimentary basin which falls within the coastal plain sands of the Benin formation which was latter overlain by alluvial deposits. The succession above the Caister Sandstone sequence boundary, up to the aegiranum marine band maximum flooding surface, records an increasing rate of stratigraphic base level rise. SEPM Society for Sedimentary Geology 1998 ISBN 978-1-56576-182-7$15.00, This site uses cookies. The coastline was around 250 kilometres further south than its current position and the northern part of the Adriatic Sea was an alluvial plain crossed by rivers. With late stages of transgression and highstand valleys fill at paces set by upstream controls on sediment delivery. "Quaternary Alluvial Plain Construction in Response to Glacio-Eustatic and Climatic Controls, Texas Gulf Coastal Plain", Relative Role of Eustacy, Climate, and Tectonism in Continental Rocks, Gary Kocurek.
Mapping from satellite imagery, field documentation of geomorphic and stratigraphic relationships, consideration of the stratigraphic significance of surface and buried soils, and a number of radiocarbon and thermoluminescence ages suggests that Beaumont and younger alluvial plains consist of multiple cross-cutting and/or superimposed valley fills of widely varying age, and may represent the last 300-400 ky or more. https://ambiente.regione.emilia-romagna.it/en/geologia/geology/regional-geology/the-emilia-romagna-plane, https://ambiente.regione.emilia-romagna.it/@@site-logo/logo_rer_quadrato.png, the alluvial plain of the Apennine rivers, The geological map 1:50,000 of the Emilia-Romagna Plain, Local benchmark sites of Emilia-Romagna soils, Soil physical and hydrological properties, CheTerraPesti weekly - the earth beneath your feet, Direzione generale cura del territorio e dell'ambiente. An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. The Texas Gulf Coastal Plain consists of a series of low-gradient, fan-shaped alluvial plains emanating from each major river valley. During floods, alluvial plains receive new alluvium: coarse-grained sediment is deposited in and close to the stream; fine-grained sediment may be deposited at a greater distance. Initially, the convergence between the plates occurred in a context of subduction of oceanic crust which led to the gradual closing of the Ligurian-Piedmont Ocean located between the two plates. Alluvial plains accompany streams; they may start out as very narrow, expanding to tens of kilometers wide nearer the sea, where the alluvial plain merges with the coastal plain.
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