Nivation forms and processes in unconsolidatedsediments, NE Greenland
In the periglacial unconsolidatedsediment landscape of Zackenberg in High Arctic NE Greenland, perennial and seasonal snowpatches dominate the geomorphological development in large areas and control the distribution of the vegetation. The existence
Seismic velocities of unconsolidatedsediments in Vancouver area of British Columbia
L'un des principaux problèmes pour bâtir une histoire géologique du Quaternaire réside dans la présence de sédiments non consolidés dissemblables en apparence. La vélocité sismique moyenne est un bon moyen pour faire la distinction entre unités
A fast procedure for sampling sedimentary structures down to 1,1m in unconsolidated wet sands
An inexpensive, simple and efficient method has been developed for sampling sedimentary structures, down to 1.1m below the sediment surface, in unconsolidated wet sands. The method can be used on land and in quiet water to a depth of at least
The deformation types of active faults in unconsolidatedsediments and their implication for recognizing rupture events
Cet article étudie les types de déformation liées à des failles actives dans différents sédiments quaternaires non consolidés de deux bassins majeurs du système de grabens de Feiwei, en Chine : Weihe et Datong, afin de caractériser les fracturations
Climate-controlled glacial erosion in the unconsolidatedsediments of Northwestern Europe, based on a genetic model for tunnel valley formation
This article makes a theoretical analysis of glacial erosion beneath a large ice sheet overlying the thick beds of unconsolidatedsediments in northwestern Europe, and derives most important factors controlling erosion. A model-supported
Paraglacial redistribution of glacial sediments in the Vestfold Hills, East Antarctica
The Vestfold Hills landscape is dominated by bare-rock slopes and unconsolidated deposits form a minor component of the surficial geology. The principal objectives of the study were to explain the distribution of unconsolidated deposits, determine
Photo-sieving: a method for grain-size analysis of coarse-grained, unconsolidated bedding surfaces
La méthode de tamisage photographique permet l'analyse granulométrique des particules > 10 mm des surfaces de sédiments meubles. La précision est égale au tamisage mécanique. Les photos de terrain sont entrées en ordinateur pour la détermination des
Surface sediment characteristics and tower karst dissolution, Guilin, southern China
structure exists vertically downward from the surface in Guilin : the zone of unconsolidated clastic sediments predominantly acidic, and the zone of karstified limestone predominantly basic. The evidence suggests that the environment and process differ
This study identifies and relates the physical and chemical characteristics of the surface sediment with the limestone bedrock in Guilin to assess the influence of the limestone dissolution process on sediment composition. A dual-zone environmental
in these 2 zones. The chemical dissolution of limestone that formed tower karst of the region is not mainly responsible for the accumulation of clastic sediment on the surface.
Sustained reworking of hydraulic mining sediment in California: G.K. Gilbert's sediment wave model reconsidered
California ; Human impact ; Mining activity ; Model ; Sediment budget ; Sierra Nevada ; Soil erosion ; United States
due to protracted sediment releases from easily eroded, unconsolidated deposits.
Hydraulic gold mining in the Sierra Nevada generated large volumes of sediment in the 19th century. Topographic surveys document several meters of mining sediment erosion in the bassin following a 1986 flood. The continued storage and mobility
of sediment in the bassin indicate increased sediment loads over pre-mining levels and call for reevaluation of Gilbert's symmetrical sediment wave model. In basins where channel storage is substantial, a sediment wave should be right-skewed in respect to time
Cryogenic deformation structures in Late Cenozoic unconsolidatedsediments of the Tunka Depression in the Baikal Rift Zone
of the unconsolidated host deposits, the shape and size of the deformation structures (wedge shaped, wave like or drop like) and the physical-mechanical properties of the sediments (particle size, density, porosity, water content and colour) point to a cryogenic origin
of the deformation structures, as ice wedge pseudomorphs and cryoturbations, rather than an origin associated with seismic activity or sedimentation. The oldest pseudomorphs and cryoturbations developed during climate-warming periods of the subboreal climatic phase
A review of information on the occurrence, classification, properties and genesis of soils, pedogenic duricrusts and unconsolidatedsediments covering pan floors and margins. A three-fold division based on climate was establisehd. - (AJC)
The quantitative analysis presented in this paper seems to indicate that lithology, time and slope exposure do have effects on the process of slope stabilization in loess and other young, unconsolidatedsediments.
This paper describes and accounts for the formation of a ridge of unconsolidatedsediment located adjacent to the foot of a talus slope in a recently glaciated valley, in southern Iceland. Specific processes associated with the development
Rates of change and degradation of hillslopes formed in unconsolidated materials: a morphometric approach date quaternary fault scarps in Western Utah| USA
L'activité sismique de l'Ouest des Etats-Unis a engendré fréquemment de multiples escarpements de faille dans les sédiments meubles récents. A l'aide d'analyses morphométriques de multiples profils topographiques de trois escarpements de l'Utah
analyses de 6 échantillons prélevés à Kajhu Perumnas montrent que le dépôt de tsunami a été mis en place par au moins 3 vagues d'uprush, une vague de backwash et une période durant laquelle la sédimentation s'est faite par décantation. La méthode AMS permet