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Characteristics of silt deposition in the Kosi river basin
  • Characteristics of silt deposition in the Kosi river basin
  • Bassin-versant ; Fluviatile ; Géographie de l'Asie ; Inde ; Kosi ; Silt ; Sédimentation
Dams, sediment sources and reservoir silting in Romania
  • Dams, sediment sources and reservoir silting in Romania
  • Dam ; Dammed lake ; Earth surface processes ; Hydraulic works ; Romania ; Sediment budget ; Sedimentation ; Silting ; Watershed
  • The AA. analyzed 138 reservoirs for which there is a determination of the silting time. They try to make a synthesis of the knowledge stage of the dam lakes silting in Romania on the basis of the relations with the territory morphodynamics
  • and considering the substantial accumulations of new data. The factual material that they have is structured as follows : the construction of dams and the arrangement of reservoirs in Romania; the problem of sediment sources and, the silting of reservoirs.
AMS radiocarbon age of the Upper Mississippi Valley Roxana silt
  • AMS radiocarbon age of the Upper Mississippi Valley Roxana silt
  • Accelerator mass spectrometer radiocarbon ages of the Roxana Silt (Loess) along the Upper Mississippi Valley of Wisconsin and Minnesota indicate that loess sedimentation of the Roxana Silt occurred between about 55,000 and 27,000 14C yr B.P
  • . The bracketing ages for the Upper Mississippi Valley Roxana Silt indicate that the Mississippi River valley was receiving outwash sedimentation between 55,000 and 27,000 14C yr B.P.
Mechanisms of loess-sized quartz silt production and their relative effectiveness : laboratory simulations
  • Mechanisms of loess-sized quartz silt production and their relative effectiveness : laboratory simulations
  • In this study a series of laboratory simulations was set up, with the purpose to demonstrate that a range of geomorphic mechanisms are capable of producing silt under laboratory conditions. The geomorphic mechanisms investigated were : aeolan
  • abrasion, fluvial comminution, glacial grinding, salt weathering and frost weathering. The relative effectiveness of these mechanisms at producing silt was then calculated in order to provide a starting point for a consideration of their potential
The anomalous Roxana Silt and mid-wisconsinan events in and near southern Michigan
  • The anomalous Roxana Silt and mid-wisconsinan events in and near southern Michigan
  • Tentative d'élucider la controverse sur le Silt Roxana, généralement interprété comme du loess accumulé entre 40 000 et 30 000 BP. Pour les AA., le Silt Roxana est un dépôt Altonien corrélatif d'une glaciation éloignée, ainsi il n'y a pas de
The diminishing advantage of the Muscatine silt loam and the dixification of the Midwest in Special issue on the Midwest.
  • The diminishing advantage of the Muscatine silt loam and the dixification of the Midwest in Special issue on the Midwest.
Silt plus clay sedimentation and decalcification during plant succession in sands of the mediterranean coastal plain of Israel in Research contributions to the physical geography of Israel. Studies in fluvial and coastal geomorphology of arid and mediterranean regions.
  • Silt plus clay sedimentation and decalcification during plant succession in sands of the mediterranean coastal plain of Israel in Research contributions to the physical geography of Israel. Studies in fluvial and coastal geomorphology of arid
  • The silt and clay content of the topsoil progresses from nearly zero where vegetation is sparse to 18 % in the oldest and densest plant community. The humic acids released from the humus developing under the dense vegetation in the wet area
  • accelerate leaching of Ca Co. In this process dune sand, moderately rich in carbonates and poor in silt and clay, becomes decalcified and enriched in silt and clay from dust. Further pedogenesis may lead to the formation of Hamra (Typic Rhodoxeralf
Enrichment ratio of poorly crystallized iron mobilized with clay/silt-sized particles released via interrill erosion
  • Enrichment ratio of poorly crystallized iron mobilized with clay/silt-sized particles released via interrill erosion
  • Soils under no-tillage (NT) and a moldboard plow tillage system (MT) were exposed to a field rainfall simulation to determine the soil poorly crystalline iron release during interrill erosion. Two different soils (Calloway silt and Maury silt loam
  • ) were exposed to different kinetic energy wettings to evaluate the temporal clay/silt sized release, the variation of the enrichment ratio for poorly crystalline iron (ERFe) and the total poorly crystalline iron delivered (TID). The clay/silt sized
  • particles release was continuous and independent of soil texture. It is highlighted that : Temporal iron enrichment of clay/silt-sized particles depends on water submergence; Iron extreme values depend on new sources of iron inside soil aggregates; Soil
Formation of a cohesive floodplain in a dynamic experimental meandering river
  • Bank erosion ; Braided channel ; Channel geometry ; Erosion control ; Experimentation ; Floodplain ; Hydrodynamics ; Meander ; Sedimentation ; Silt ; Stream
  • channel in identical conditions, but to one they added cohesive silt at the upstream boundary. The effect of cohesive silt on bank stability was tested in auxiliary bank erosion experiments and showed that an increase in silt reduced erosion rates
  • by a factor of 2. The experiment without silt developed to a braided river by continuous and extensive shifting of multiple channels. In contrast, in the meandering river silt deposits increased bank stability of the cohesive floodplain and resulted
  • in a reduction of chute cutoffs and increased sinuosity by continuous lateral migration of a single channel. Overbank flow led to deposition of the silt and 2 styles of cohesive floodplain were observed. The first style led to a reduction in bank erosion, while
Review article : Silt and the future development of China's Yellow River
  • Review article : Silt and the future development of China's Yellow River
  • China ; Dam ; Environmental degradation ; Flood ; Groundwater ; Hydraulic works ; Irrigation ; Loess ; Silting ; Water erosion
Loessic silt deposits in the Western Himalayas : their sedimentology, genesis and age
  • Loessic silt deposits in the Western Himalayas : their sedimentology, genesis and age
  • Fieldwork and sedimentological analysis including grain size, mineralogy and microfabric showed that the loessic sediments have been reworked and some have undergone weak pedogenesis. It is concluded that care must be taken when using loessic silts
Davis Creek silt, an early Pleistocene or late Pliocene deposit in the Cypress Hills of Saskatchewan
  • Davis Creek silt, an early Pleistocene or late Pliocene deposit in the Cypress Hills of Saskatchewan
  • Description pour la première fois du silt de Davis Creek, nom informel utilisé pour désigner un dépôt de loess et de détritus remanié, observé dans les collines du Cypress. Données stratigraphiques et datations paléomagnétiques.
Stratigraphy and paleomagnetism of the Late Miocene Davis Creek silt, East Block of the Cypress Hills, Saskatchewan
  • Stratigraphy and paleomagnetism of the Late Miocene Davis Creek silt, East Block of the Cypress Hills, Saskatchewan
  • Présentation des résultats des données paléomagnétiques et téphrochronologiques concernant les couches du silt de Davis Creek, qui recouvrent d'anciennes surfaces géomorphologiques dans le Bloc Oriental des collines de Cypress, Saskatchewan. Les AA
Depositional environment and OSL chronology of the Homeb silt deposits, Kuiseb River, Namibia
  • Depositional environment and OSL chronology of the Homeb silt deposits, Kuiseb River, Namibia
  • Geochronology ; Namibia ; Palaeo-environment ; Palaeoclimate ; Quaternary ; Sedimentary ; Silt ; Thermoluminescence ; Valley
(Re) deposition of loess in southern Limbourg, The Netherlands. 3. Field evidence for conditions of deposition of the middle and upper silt loam complexes and landscape evolution at Nagelbeek
  • (Re) deposition of loess in southern Limbourg, The Netherlands. 3. Field evidence for conditions of deposition of the middle and upper silt loam complexes and landscape evolution at Nagelbeek
  • This paper is about conditions and processes during the accumulation of the Upper Pleniglacial middle and upper silt loam complexes at Nagelbeek, Limbourg, a Weichselian stratigraphical type locality. The complexes correlate with Hesbayan
Chronology of upper Pleistocene red silts in the Siwalik system and constraints for the timing of the upper palaeolithic in Nepal
  • Chronology of upper Pleistocene red silts in the Siwalik system and constraints for the timing of the upper palaeolithic in Nepal
  • Twelve samples extracted from silt-rich sediments in intramontane basins (duns) in the Siwalik systems in SW Nepal were dated by thermoluminescence. The samples from the sections at Arjun and Gidhniya, which underwent intensive postdepositional
  • rubefication, yield ages between ca. 30 and 10ka, whereas more yellowish clayey silt on top of red soil sediments at Babai Khola was deposited as recently as 4 ka. The ages presented here are relevant to the dating of the Paleolithic in the area and suggest
Fluvial comminution and the production of loess-sized quartz silt. A simulation study
  • Fluvial comminution and the production of loess-sized quartz silt. A simulation study
Paleo-periglacial ventifact formation by suspended silt or snow, site studies in South Sweden
  • Paleo-periglacial ventifact formation by suspended silt or snow, site studies in South Sweden
The Laka lake
  • Bathymetry ; Czech Republic ; Lake ; Morphometry ; Mountain ; Silting ; Watershed
  • characteristics of catchment area are described as well. Differently from the other Šumava lakes, the Laka Lake is interesting by its relatively intensive silting processes. - (MS)
Deformation of laminated silt loam due to repeated freezing and thawing cycles
  • Deformation of laminated silt loam due to repeated freezing and thawing cycles