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Influence of water storage capacity in the regolith zone on hydrological characteristics, slope processes, and slope form

Experimental catchment ; Granite ; Honshu ; Hydrodynamics ; Hydrogeology ; Japan ; Metamorphic rock ; Sediment transport ; Slope ; Slope dynamics ; Soil ; System ; Topography ; Water
En analysant quatre bassins expérimentaux de la région de Obara (Japon Central), un système d a été trouvé concernant le degré d'altération, les processus hydrologiques, les transports en masse sur les versants, l'épaisseur du régolithe et la forme

Einige neue Erkenntnisse zum geologischen Bau und zur Lagerstättenbildung im Erzgebirge. (Some recent findings on geological structure and on formation of deposits in the Ore mountains)

On the basis of the petrologic characteristics and the lithostratigraphy of the Precambrian-Lower Palaeozoic metamorphites of the Ore Mountains the development of sedimentation areas and the chronological and regional course of tectonic, magmatic
and metamorphic processes are discussed. Afterwards a conception about the deeper or older stages is presented. (HL).

Gesteins-und lagerstättenbildende Vorgänge im Rahmen der mitteleuropäischen Arkogenese. (Rock-and deposit-forming processes within the central-european arcogenesis)

The granitoides of the southern part of the GDR may be considered as crustal anatexites generated in connection with the posttectogenic tectono-magmatic activation together with a regional metamorphism and postmagmatic ore deposits. The supply

Variscan plate dynamics in the circum-carpathian area

Carpathian Mountains ; Earth surface processes ; Geological structure ; Mountain ; Oceanic crust ; Orogeny ; Palaeozoic ; Plate tectonics ; Poland ; Regional geology
Corteza oceánica ; Cárpatos ; Estructura geológica ; Geología regional ; Geomorfodinámica ; Montaña ; Orogénesis ; Paleozoíco ; Polonia ; Tectónica de placas
Magmatic and metamorphic events, imprinted in the crystalline rocks of the so-called core mountains inside the Alpine structure of the Inner Carpathians, allow the re-construction of the history of the Rheic Ocean opening, its development and its
final closure. All magmatic suites, mafic and felsic, present in the Carpathians core mountains, show similarities to those found in the European Variscan Belt. All described- and dated metamorphic and magmatic events also have equivalents

Geologie und tektonische Entwicklung der Germaniahalvøya, Haakon VII Land, NW-Spitzbergen (Svalbard)

Evolution géologique et tectonique de la région de Germaniahalvøya, Haakon VII, NW-Spitzberg (Svalbard)
Arctic Region ; Graben ; Palaeozoic ; Regional geology ; Spitsbergen ; Stratigraphy ; Svalbard ; Tectonics
The area of Germaniahalvøya consists of Caledonian metamorphic basement rocks (Hecla Hoek) and post-orogenic Old Red-sediments of the Devonian graben of NW-Spitsbergen.

The Monte Penna thrust (southern Tuscany, Italy) : geometry and kinematic of a collisional structure affecting the Tuscan Nappe during the Northern Apennines orogenic building

Italy ; Orogeny ; Regional geology ; Structural geomorphology ; Tectonic thrust ; Toscana
Cabalgado tectónico ; Geología regional ; Geomorfología estructural ; Italia ; Orogénesis ; Toscana
In this paper the AA. describe the geometry and kinematics of a contractional structure, consisting of a thrust and related minor structures, which doubled the Tuscan Nappe cropping out in the southern side of the Monte Amiata geothermal region
with the structure of the Tuscan Metamorphic «basement», in terms of geometry, stacking pattern and timing, suggesting a probable common structural evolution even if a different structural levels. - (NF)

Evidence for late Precambrian plate tectonics in West Africa

Afrique ; Afrique de l'Ouest ; Aulacogène ; Gourma, région ; Géographie physique ; Iforas, région ; Mali ; Orogenèse ; Précambrien ; Rifting ; Tectonique de plaques ; Tectonique globale
In the Gourma and Iforas regions (Mali) rifting occured around 800-850 Myr ago along the eastern margin of the West African craton with a triple point in Mali, the Gourma being interpreted as an aulacogen-Oceanic closure around 600Myr led
foreland of nappes including internal nappes displaying high pressure-low temperature metamorphism assemblages.

Le recul fini-hologène des parois métamorphiques du Spitsberg : une évolution à trois vitesses

Arctic Ocean;Arctic Region ; Biogenic action;Biogenic process ; Cold area ; Erosion ; Gelifraction ; Glacial features ; Lichenometry ; Metamorphic rock ; Slope ; Slope dynamics ; Spitsbergen ; Svalbard ; Weathering

Zur strukturellen Kontrolle des reliefs in metamorphisierten Gesteinen

Bohemia ; Crystalline rocks ; Drainage network ; Former Czechoslovakia ; Gneiss ; Metamorphic rock ; Microstructure ; Regional geology ; Relief ; Structural geomorphology

Mapping of satellite derived surface albedo on the Mitdluagkat Glacier, eastern Greenland, using a digital elevation model and SPOT HRV data

Glacier. Correction of reflectance factors with respect to solar incidence angle permits classification of different glacial metamorphic facies favourably compared with published data on field measurement from other glaciated regions.

Ultramafic rock weathering and slope erosion processes in a South West Pacific tropical environment

Geomorphometry ; Geophysics ; Laterite ; Metamorphic rock ; New Caledonia ; Slope ; Slope dynamics ; Slope gradient ; Soil erosion ; Tropical zone ; Weathering
Weathering and erosion processes are investigated using electrical resistivity tomography (ERT) imaging and the quantification of geomorphic patterns at the edges of lateritic plateau overlying ultramafic rocks in the north western region

Hydrotectonic regime at soles of overthrust sheets : textural and fluid inclusion evidence from basal cataclasites of the Muráň nappe (Western Carpathians, Slovakia)

Carpathian Mountains ; Electron microscope ; Lithology ; Metamorphic rock ; Petrography ; Regional geology ; Slovak Republic ; Tectonic thrust ; Tectonics

L'Unità Aveto (Appennini settentrionale) : caratteriche litostratigrafiche, biostratigrafia, petrografia delle areniti ed assetto strutturale

Appennino ; Biostratigraphy ; Italy ; Oligocene ; Petrography ; Regional geology ; Sedimentary rock ; Tectonics
Due to the presence of andesite fragments in association with low and medium grade metamorphic rocks, the Val Aveto Fm represents one of the most interesting clastic deposits of the Northern Apennines. It is part of a tectonic unit belonging

Le epiclastiti zeolitizzate del Logudoro orientale : un livello guida all'interno della successione vulcano-sedimentaria della Sardegna centrosettentrionale

Graben ; Italy ; Pyroclastic ; Regional geology ; Sardegna ; Sedimentary ; Stratigraphic correlation ; Stratigraphy
on the volcanic succession made up of pyroclastic flows which lap on to a metamorphic basement of variscan age. - (NF)

Rapid Holocene chemical weathering on a calcitic lake shoreline in an alpine periglacial environment : Attgløyma, Sognefjell, southern Norway

This paper estimates rates of bedrock surface lowering by chemical weathering associated with a relict lake shoreline in an area of calcitic metamorphic rocks in the low-alpine zone of southern Norway, and sheds light on the environmental controls
in the chemical weathering and landscape denudation of cold regions.

Sand on the southern Mediterranean Ridge: proximal basement and distal African-Nile provenance

Petrographic analysis of Quaternary ferriferous sand layers in eastern Mediterranean cores reveals distinct mineralogical differences between the Egyptian Shelf-Nile Cone region and the southern part of the Mediterranean Ridge. A compositionally
and texturally immature suite in Ridge cores, mixed with a Nile-derived assemblage, identifies a fresh non recycled mineral component derived from proximal igneous and metamorphic surface or near-surface exposures, probably in the south-central Ridge area rather

Oligo-Miocene exhumation of the Beni-Bousera peridotite through a lithosphere-scale extensional shear zone

Earth surface processes ; Lithosphere ; Metamorphism ; Miocene ; Morocco ; Northern Morocco ; Regional geology ; Rif ; Shear stress ; Tectonics
Geología regional ; Geomorfodinámica ; Litosfera ; Marruecos ; Metamorfismo ; Mioceno ; Rif ; Tectónica ; Tensión de cizallamiento
Bousera region and the Alboran domain in the framework of the western Mediterranean geodynamics during the last 40 Myrs.

Evidence of tectonic influence on drainage evolution in an uplifting area: the case of northern Sila (Calabria, Italy)

The Sila Massif (Calabria, southern Italy) is a high-standing plateau with a rolling upland surface lying between 1000 and 1900 m. It is underlain by magmatic and metamorphic rocks thrusted over Mesozoic carbonate and terrigenous units. The Sila
Massif is surrounded by low-standing extensional basins, filled with several upper Tortonian to Holocene marine and fluvial deposits. Since the end of the early Pleistocene, the Sila Massif has been uplifted regionally as indicated by deeply incised river
the local tectonic constrains on the evolution of northern Sila drainage network in the context of the Calabrian Arc uplift. Results indicate that the drainage evolution has been strongly controlled primarily by local tectonics and secondarily by regional

A la recherche des océans disparus dans les montagnes françaises : Alpes, Massif central, Massif armoricain, Pyrénées, Corse

Alps (The) ; Area of old hard rocks ; Corsica ; Earth surface processes ; France ; Gabbros ; Geological guide ; Massif Central ; Massif armoricain ; Metamorphism ; Mountain ; Oceanic crust ; Orogeny ; Petrography ; Plate tectonics ; Pyrénées
; Regional geology ; Subduction
Alpes ; Corteza oceánica ; Córsica ; Francia ; Gabro ; Geología regional ; Geomorfodinámica ; Guía geológico ; Macizo antiguo ; Metamorfismo ; Montaña ; Orogénesis ; Petrográfia ; Pirineos ; Subducción ; Tectónica de placas

Utilisation des images Landsat 7 ETM+ et ALOS Scansar pour la cartographie de la déformation contemporaine du métamorphisme paléoprotérozoïque de très haute température de l'In Ouzzal Nord (Hoggar, Algérie)

Algeria ; Data processing ; Geological map ; LANDSAT ; Lineament ; Metamorphism ; Precambrian ; Regional geology ; Remote sensing ; Shear stress
Algería ; Geología regional ; LANDSAT ; Lineamento ; Mapa geológico ; Metamorfismo ; Precambriano ; Teledetección ; Tensión de cizallamiento ; Tratamiento de datos

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