Glacier ; Glacier dynamics ; High mountain ; Himalaya ; Meltwater ; Pakistan ; Remote sensing ; Rock glacier
glacier ice to meltwater. They document with maps, satellite images, and field observations the probable evolution of part of a slow and inefficient glacier into a rock glacier at the margins of Sachen Glacier in c. 50 years, as well as several other
The origin and mobilization of the extensive debris cover associated with the glaciers of the Nanga Parbat Himalaya is complex. The AA. propose a mechanism by which glaciers can form rock glaciers through inefficiency of sediment transfer from
Rock glacier dynamics in a marginal periglacial high mountain environment : flow, movement (1991-2000) and structure of the Argualas rock glacier, the Pyrenees
Creep ; Geophysics ; Mountain ; Periglacial features ; Pyrénées ; Rock glacier ; Sedimentology ; Spain ; Years 1990-99
This paper presents the results of detailed studies on the dynamics of the Argualas rock glacier in the Pyrenees from 1991 to 2000. The aim is to provide a better understanding of the surface movement and dynamics of the tongue-shaped rock glacier
located in a marginal periglacial environment at the lower limit of discontinuous permafrost.
Alaska ; Bilan de masse ; Cartographie ; Fluctuation du glacier ; Glacier ; Glaciologie ; Géodésie ; Marge glaciaire ; Photogrammétrie
This paper reports the 1989 re-mapping of Lemon Creek Glacier, and, in conjunction with 1948 and 1957 maps of the glacier, calculation of 9-year and 32-year changes of glacier mass and terminal position. As in the earlier maps, the new map
is at a scale of 1:10,000 with a 5-m contour interval for the glacier surface. Changes between 1957 and 1989 were determined by use of the geodetic method for determining mass balance.
Changes in ice-marginal morphology near Leverett glacier, a small outlet glacier at the of the Greenland ice sheet, are determined from a photogrammetrical analysis. To be able to compare two datasets from subsequent years with measurements
of erosion and deposition within glacial systems during a period of glacier retreat (1943-1968) and of advance (1968-1992) are evaluated.
glacis remnants were formed during the earlier Pleistocene glacials. The western margin of the Rhine Hessian, Plateau provides, therefore, evidence that glacis and, in a wider sense, pediments did form during the Pleistocene glacials.
The stratigraphical record and the morphological correlation to the Nahe terraces show that the latest glacis development took place during the Würm glacial and another during the Riss glacial. By analogy it was concluded that the older, higher
Advance of part of the margin of the Greenland ice sheet across a proglacial moraine ridge between 1968 and 2002 caused progressive changes in moraine morphology, basal ice formation, debris release, ice-marginal sediment storage, and sediment
Hypsometric forcing of stagnant ice margins: Pleistocene valley glaciers, San Juan Mountains, Colorado
Colorado ; Deglaciation ; Glacial valley ; Glaciermargin ; Hypsometry ; Model ; Mountain ; Pleistocene ; Quaternary ; Topography ; United States of America
The A. uses the location of stagnant ice deposits in many San Juan valleys, Colorado, to test how valley hypsometry and topographic obstructions influence the type of margin present during valley glacier retreat.
Examen des lacs juxtaglaciaires et supraglaciaires islandais. Débâcles consécutives à la vidange de ces lacs, en fonction de l'épaisseur des glaciers. (JCB).
The basal ice and debris sequence at the margin of an equatorial ice cap| El Cotopaxi, Ecuador
This paper describes the basal ice sequence observed at the margins of two glaciers descending from the ice cap of El Cotopaxi, an active volcano, and considers the implications of these observations for the understanding of basal ice processes
Entrainment of glaciomarine sediments and formation of thrust-block moraines at the margin of Sørsdale Glacier, East Antarctica
Antarctique ; Datation C 14 ; Fluctuation du glacier ; Gel ; Glaciaire ; Glaciotectonique ; Holocène ; Littoral ; Modèle ; Moraine ; Niveau marin ; Paléogéographie ; Structure sédimentaire ; Sédimentologie
Antarctica ; C 14 dating ; Coastal environment ; Freezing ; Glacial features ; Glacial tectonics ; Glacier fluctuation ; Holocene ; Model ; Moraine ; Palaeogeography ; Sea level ; Sedimentary structure ; Sedimentology
The morphology, sedimentology and structure of moraines at the margin of an outlet glacier in east Antarctica are described, and contemporary depositional processes in a marine inlet adjacent to the ice margin are examined. Results indicate
that the principal moraines are thrust-block moraines produced by basal freezing and deformation of glaciomarine sediment as the outlet glacier expands into a marine inlet. A model of thrust-block moraine development produced by this study provides a framework
Glaziäre Entwässerung und Sanderbildung am Kotlujokull, Südisland. (Glacier drainage and sandar genesis at the Kotlujokull, South Iceland)
Research of some years at the 8 km long south-eastern glaciermargin of Kotlujokull in South Iceland concerned the correlation of the manner of glacier drainage with the genesis of sandar, examplified by the recent evolution of a glacier foreland
The maximum Ice Age (Würmian, Last Ice Age, LGM) glaciation of the Himalaya - a glaciogeomorphological investigation of glacier trim-lines, ice thicknesses and lowest former ice margin positions in the Mt. Everest-Makalu-Cho Oyu massifs (Khumbu
and Khumbakarna Himal) including informations on late-glacial, neoglacial, and historical glacier stages, their snow-line depressions and ages
Etude de la glaciation du Würm dans l'Himalaya : reconstitution des fluctuations du glacier et des limites d'enneigement. Très nombreuses figures et photos.
Aggregate clast form characteristics of deposits near the margins of four glaciers in the Jotunheimen Massif, Norway
Samples of clasts from deposits with different erosional histories near the margins of four Jotunheimen glaciers revealed systematic differences in their aggregate form characteristics. Samples of frost-shattered detritus generally contain many
Morphology, distribution and formation of relict marginal moraines in the Swedish mountains
Weichselian deglaciation. To that end, they have mapped and classified 234 relict marginal moraines and 233 contemporary glacier moraines for comparison, providing the first comprehensive inventory of marginal moraines in the Swedish mountains.
The AA. present data on relict marginal moraine morphology and distribution in the Swedish mountains. These data are used to suggest formational conditions for the moraines and palaeoglaciological implications for the final part of the late
Canada ; Glacial features ; Glaciermargin ; Ice sheet ; Meltwater ; Moraine ; Northwest Territories ; Palaeo-environment ; Photointerpretation ; Shear stress ; Victoria Island
The AA. focus on subglacially produced ice stream shear margin moraines, and provide a detailed description of their characteristics and dimensions. They concentrate on several moraines associated with the activity of M'Clintock Channel Ice Stream
which drained the northwestern margin of the Laurentide Ice Sheet around 10 000 years ago. This paper also explores their possible mode of formation.
Spitsberg occidental. Le recul du glacier Comfortless a été accompagné de profonds changements dans le réseau hydrographique qui expliquent l'originalité du domaine marginal, glaciaire et fluvioglaciaire, commun aux deux glaciers.
L'examen de documents photographiques et cartographiques successifs, ainsi qu'un levé géomorphologique à grande échelle, ont permis de reconstituer les étapes du retrait glaciaire, depuis le début du siècle sur la marge de deux glaciers voisins au
and interprets the ice marginal sediments and landforms of several glaciers in the Taylor and Wright valleys. The principal characteristics of the ice marginal landforms and sediments are compared and contrasted with the existing facies model for arid polar
The objective of this study was to determine whether the dry-based glaciers of the Dry Valleys of southern Victoria Land, Antarctica, form a land system and sediment association that is different from the other thermal types. This paper examines
glaciers, and with facies models from temperate and polythermal glaciers.
Macro- and micro-scale sedimentological analyses of recently deposited tills and complex push/squeeze moraines on the forelands of Icelandic glaciers and in a stacked till sequence at the former Younger Dryas margin of the Loch Lomond glacier lobe
in Scotland are used to assess the depositional processes involved in glacier submarginal emplacement of sediment. The AA. employed clast fabric analyses, micro-morphology, sedimentological logging and structural logging in order to combine micro-scale
Geomorphological processes associated with an ice-marginal lake at Bridge Glacier, British Columbia
British Columbia ; C14 dating ; Canada ; Glacial features ; Glacier surges ; Lake level ; Little ice age ; Moraines ; Paleo-environment ; Proglacial lake
Etude des processus géomorphologiques associés à la formation d'un lac proglaciaire à proximité du glacier Bridge, Colombie-Britannique. Reconstitution des lignes de rivage et des crues pendant le Petit Age Glaciaire.
Antarctica ; Earth surface processes ; Esker ; Glacial features ; Glaciermargin ; Ice sheets;Ice cap;Inlandsis ; Moraines
The eskers described in this paper have formed on the surface of cold ice at the margin of the Antarctic ice sheet. The location, orientation, sedimentary properties and field relationships of the eskers are described and a model of their formation