Glacio-karst closed depressions are the major large scale karst landforms of the Eastern Massif of the Picos de Europa. During valley glaciation the major depressions functioned as cirques, with smaller depressions also developing in the floor
of glacial troughs and in glacier margin locations. The major glacio-karstdepressions developed at the locations of pre-glacial features where topo-climatic factors favoured snow accumulation.
Glaciokarst assemblages, rarely documented in the United States are well represented in the Door Peninsula, where characteristic steps, pavements and enclosed depressions are developed in the Silurian Niagara Dolomite.
Les relations entre réseau de drainage et dépressions sèches dans le karst tropical sont étudiées sur cinq exemples jamaïcains, où l'écoulement superficiel concentré est peu important et n'apparaît que dans les formations superficielles. Les puits
The A. presents closed features of the superficial deposit on karst. The study areas were the following : karst areas in Hungary, a few karst areas of the Alps and the Padis Plateau (Apuseni Mountains, Romania). The A. investigated the morphology
of the depressions of superficial deposit (by topographical mapping, morphological mapping) and the morphology of the bedrock (by Vertical Electrical Sounding). He analysed the denudation types of superficial deposit found at the bottom of depressions of bedrock
(on the topographical map using slope angle class data). In the paper the depressions of superficial deposit were classified. - (AM)
Carbonate rock ; Doline ; Hydrogeology ; Isotope analysis ; Karst ; Kentucky ; Mathematical model ; Model ; Tennessee ; United States of America
Initiation and evolution of a large karstdepression population consisting of parent and daughter dolines were spatially and temporally modeled using logistic growth functions. Seven assumptions based upon previous studies were refined
into mathematical statements and tested using more than 2000 dolines from a subpopulation of both parent and daughter karstdepressions on the Western Highland Rim and Pennyroyal Plain of Tennessee and Kentucky.
Doline ; Dépression karstique ; Eau souterraine ; Ecoulement ; Géographie de l'Océanie ; Hydrogéologie ; Hydrologie ; Hydrologie karstique ; Karst ; North Island ; Nouvelle-Zélande ; Réseau karstique souterrain ; Waitomo
sous-cutané, écoulement dans le karst, écoulement vadose et percolation. Ce modèle permet de comprendre l'hydrologie des dépressions karstiques polygonales dans le district de Waitomo en Nouvelle-Zélande.
The ways of sedimentation, its type and morphological consequences have been studies in several sites. Comparisons are made between the characteristics of winter and summer activity of depressions. A typology is set up for flood stage ponds
In the central parts of the Schwäbische Alb relics of the Bohnerz-Formation (claret to violet clay stirred with iron concretions) are widely spread in karst fissures and depressions. For analyzing geomorphological processes and landform genesis
such datable sediments provide time aspects that can be refered to distinct positions in relief and thus help to reconstruct landscape evolution through time. Focussing on that the distribution of fossiliferous sediments in the karst holes (mostly roofless
caves) in the hilly Kuppenalb, around Salmendingen and in the Bärenhöhle (Bears Cave) nearby Erpfingen, are of outstanding importance. Due to palaeontological data the Salmendingen karst holes are bound to the Upper Miocene land surface. Post Upper
Les karsts haut-alpins de Platé, du Haut-Giffre et de Suisse Occidentale
Alpes ; Alpes françaises du Nord ; Berner Alpen ; Carbonate ; Europe ; Forme glacio-karstique ; France ; Glaciaire ; Géographie physique ; Géomorphogenèse ; Haut Giffre, massif ; Karst ; Karst sous-glaciaire ; Montagne ; Platé, massif ; Spéléogenèse
-karstdepressions prove interaction between glacial quarrying, absorption and dissolution. Caves are characterized by a vadose outflow and a rapid draining. Greatest karst landforms date probably from Ancient Quaternary while minor solutions forms
The high-altitude alpine karsts of this area have a cold and hypersnowy climate. Consequently, it exists an important corrosion in spite of the feeble aggressivity of melting waters (lack of CO). The actual sub-glacial karsts and the large glacio
Meso-topography and soil cover in tropical karst terrain, West Malaysia
Epaisseur du sol ; Gphy ; Géographie physique ; Géomorphogenèse ; Géomorphométrie ; Karst ; Malaisie ; Modelé karstique superficiel ; Méso-topographie ; Versant ; West Malaysia ; Zone intertropicale
Results are presented of detailed slope and soil depth surveys from 13 plots on tropical karst outcrops in the Malay peninsula. The meso-topography and degree of surface cover vary widely, with differences in terrain type (rocky hilltop, hilltop
depression, steep hillslope, moderate hillslope and moderate footslope), topographic setting and limestone purity accounting for much of the inter-plot variability.
, where a variety of typical contact karstdepression features can be found. Relict alluvial fans on contact karst are the result of the gradual denudation of alluvial cover from flysch and chemical denudation of carbonate bedrocks in the area of alluvial
Several types of contact karst are found within the Slovenian karst, but the most common is the ponor type, which appears between flysch and limestone. The most extensive contact of this type is in western Slovenia, in the area of Matarsko podolje
fans. Geomorphologic features and processes on alluvial fans, and the influences of alluvial fans on the development of local karst have been investigated in detail. - (IKR)
CRYONIVAL ; CUVETTE GLACIO-KARSTIQUE ; EUROPE ; GLACIAIRE ; Géographie physique ; KARST ; MONTAGNE ; PERIGLACIAIRE ; TYPE ALPIN
DESCRIPTION OF SOME DEPRESSIONS SITUATED IN KARSTIC MOUNTAINS OF HIGH-ALPINE TYPE. THE DIFFERENT SHAPES OF THIS DEPRESSIONS ARE CONDITIONED BY THE STRUCTURE. THEIR ORIGIN DEPENDS UPON SEVERAL PROCESS: A) OVERDEEPENING TYPICAL OF GLACIERS| B
Schéma des principaux types morphogénétiques de dépressions karstiques contenant de la bauxite. Schéma d'évolution du complexe de minerai de bauxite avec un karst dans des substrats de roches carbonatées, effusives, clastiques et des roches