The source of alluvium in large rivers of the lower coastal plain of North Carolina
Alluvion ; Cours d'eau ; Erosion des sols ; Estuaire ; Etats-Unis ; Fluviatile ; Minéralogie ; North Carolina ; Plaine alluviale ; Plaine côtière ; Sol alluvial ; Sédimentaire
Alluvialplain ; Alluvial soil ; Alluvium ; Coastal plain ; Estuary ; Fluvial processes ; Mineralogy ; North Carolina ; Sedimentary ; Soil erosion ; Stream ; United States
Despite high erosion rates in the North Carolina Piedmont and extensive sediment delivery to Coastal Plain reaches of Piedmont-draining streams, sediment budget studies and estuarine sedimentology suggest that relatively little Piedmont-derived
La plaine de la Lupembashi (Shaba, Zaïre). Mise en valeur agro-industrielle d'un cône alluvial en région tropicale humide
Cône alluvial ; Fluviatile ; Géographie de l'Afrique ; Géomorphogenèse ; Lupembashi plaine ; Plaine alluviale ; Quaternaire zone chaude ; Shaba ; Zaïre ; Zone intertropicale
Etude géomorphologique d'une plaine alluviale à l'est de Likasi, où se développe un grand programme de culture mécanisée du maïs. Analyse du complexe drainage-sol-microrelief-végétation . Reconstitution de l'évolution du cône alluvial au Quaternaire
The alluvialplain of the Waal River (The Netherlands) showed large flow-lobe like structures after it had fallen dry following floodings. The deformation is ascribed to a rare coincidence of hydrological, topographic, and weather conditions. Local
Cone aluvial do Taquari, unidade geomorfica marcante na planicie quaternaria do Pantanal. (Cône alluvial du Taquari, unité géomorphologique remarquable dans la plaine quaternaire du Pantanal)
Description des unités géomorphologiques du cône alluvial du Taquari dans le Pantanal, qui correspond à une intense activité érosive torrentielle sub-récente. (ASA).
The Coghinas coastal plain is an alluvialplain in a half-graben structure where three different zones are morphologically divided. On the basis of the criteria followed in this investigation, the climatic data, the comparison between historical
maps (since the 1841), the fluvial evolution suggest a discontinue and disuniform sedimentation related to the inner plain. - (NF)
Italia ; LiDAR ; Llanura aluvial ; Modelo numérico de terreno ; Ocupación humana ; Padua ; Paleogeografía ; Sedimentario ; Teledetección ; Véneto
The alluvialplain around Padua results from the sedimentary activity of the Brenta and the Bacchiglione rivers since the last glaciation to the modern times. The inner and oldest part of the city developed on the banks of a former meander
of the Brenta River, later occupied by a minor course, the Bacchiglione. Early archaeological evidence dates back to the final Bronze Age and the first urban settlement started in the Iron Age. The underground of the city centre consists of alluvial sediments
The five distinct topographic units of the vicinity of the town (alluvialplain covered with wind-blown sand, Upper Pleistocene residual levels, high flood-plain, low flood-plain and the active flood-plain) are described and mapped by the author.
Cours d'eau ; Crue ; Holocène ; Inde ; Inde de l'Ouest ; Mousson ; Paléogéographie ; Plaine alluviale ; Stratigraphie ; Sédimentation
Flooding of rivers in India is linked with the peak monsoons. In this study, the slackwater deposits in the alluvial reaches of the Mahi river basin have been documented. These occur in the ravines incised during the early Holocene on an alluvial
Modern alluvial pollen varies with geomorphic setting and depositional facies in sediments of the Yellow, Hutuo, and Luan rivers and in Baiyangdian and Hengshuihu lakes. Alluvium dominated by Pinus pollen and Selaginella spores was deposited during
Classification en trois groupes des formes de paysage liées aux séismes dans les plaines alluviales : 1) formes de paysage directement associées à la liquéfaction des niveaux sableux| 2) celles associées au passage des ondes sismiques| 3) celles
Alluvial fans as records of Holocene sediment yield in the central Great Plains of southwest Nebraska
Bilan sédimentaire ; Cône de déjection ; Datation C 14 ; Etats-Unis ; Great Plains ; Géochronologie ; Holocène ; Nebraska ; Paléosol ; Quaternaire ; Stratigraphie ; Variation climatique
Alluvial cone ; C 14 dating ; Climatic variation ; Geochronology ; Holocene ; Nebraska ; Palaeosol ; Quaternary ; Sediment budget ; Stratigraphy ; United States of America
of a shift, at least locally, toward increased sediment yields. The objective of this paper is to propose a Holocene history of sediment yield increases in the central Great Plains based on the record that buried alluvial-fan soils provide.
On alluvial fans, increased rates of sedimentation are directly related to increased sediment yields from their watersheds. Since well developed soils imply prolonged landscape stability, soils that are buried by alluvial-fan deposits are evidence
The rapid development of the western Okayama plain between 1600 and 1900 was largely influenced by much supply of tailings derived from the iron sand mining in the upper reaches of the river Takahashi. This is evidenced by the high frequency
of floods in this period and the high percentage of granitic materials including iron slag grains in the alluvial sediments.
The paper deals especially with geologic structure, river terraces and flood plains, alluvial cones and the eolic phenomenas of the Borska nizina (lowland). (MS).
Argile minéral ; Grèce ; Grèce du Nord-Est ; Géochimie ; Minéralogie ; Plaine alluviale ; Propriétés du sol ; Pédogenèse ; Régime hydrique ; Taxonomie ; Vertisol
Arcilla mineral ; Geoquímica ; Grecia ; Llanura aluvial ; Mineralogía ; Pedogénesis ; Propiedades del suelo ; Régimen hídrico ; Taxonomía ; Vertisol
Four pedons from the alluvialplain of Drama (NE Greece) were investigated in order to provide detailed information on their morphology, chemical, physical and mineralogical properties, classification and genesis. Smectite (montmorillonite
) is the dominant clay mineral and was mainly inherited from the parent sediments and by neoformation. The pedons located in the highest points of the alluvialplain were classified as Chromic Haploxererts and those in the lowest landscape were classified as Typic
Haploxererts. The properties of these Vertisols reflect the impact of climate (alternating wet–dry periods), landscape position (alluvialplain; seasonally water saturated), and parent material (clayey, smectite-dominated fluvio-lacustrine, highly calcareous
The response of fluvial systems to climate change : an example from the central Great Plains
The A. uses a late Holocene alluvial chronology from a reach of the Republican River, south-central Nebraska, the published late Holocene alluvial record from the central Great Plains, and the paleoclimatic record of the region to discuss
Field and modern analytical methods have shown that Floodplain soils with a pronounced A2 horizon are a large group of soils that occur under various ecologic conditions. They include Alluvial Sod Acid and Meadow Acid residual podzolized or residual
Gray Forest soils, Alluvial Sod-Podzolic and Alluvial Gray Forest residual-sod soils, Alluvial Pseudopodzolic (Pseudogley) soils, Alluvial Sod-Podzolic soils, and Alluvial Gray Forest soils. Classification and nomenclature of these soils should take