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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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The nature of basalt weathering in Israel
  • The nature of basalt weathering in Israel
  • Basalte ; Domaine méditerranéen ; Géographie physique ; Israël ; Météorisation ; Zone subtropicale
Hydrothermal alteration and earth surface rock weathering: a basalt example
  • Hydrothermal alteration and earth surface rock weathering: a basalt example
  • Altération hydrothermale ; Basalte ; Géographie physique ; Météorisation ; Roche volcanique ; Smectite ; Volcanisme
  • Hydroclastie des basaltes.
The weathering of basalt in an arctic environment in Volcanic soils. Weathering and landscape relationships of soils on tephra and basalt.
  • The weathering of basalt in an arctic environment in Volcanic soils. Weathering and landscape relationships of soils on tephra and basalt.
  • Altération météorique ; Arctique ; Arctique canadien ; Argile minéral ; Baffin Land ; Basalte ; Canada ; Géographie des régions polaires ; Permafrost ; Périglaciaire ; Sol
  • Etude de l'altération des basaltes dans cinq sols développés sur des basaltes du Tertiaire, Cape Dyer, Ile de Baffin en régime de permafrost.
Thermal effects of basalt on continental crust and crustal contamination of magmas
  • Thermal effects of basalt on continental crust and crustal contamination of magmas
  • Basalte ; Contamination crustale ; Croûte continentale ; Effet thermique ; Géographie physique ; Géophysique ; Magma ; Volcanisme
THE BASALT CLAN
  • THE BASALT CLAN
A dunántúli bazaltvulkanizmus általános jellemzöi
  • Activité volcanique ; Basalte ; Dunántúl ; Hongrie ; Volcanisme
  • Basalt ; Hungary ; Volcanic activity ; Volcanism
  • The Transdanubian basaltic volcanic activity presents several regularities that are exemined in this research. The areas of volcanism and the amount of basalts are examined. - (JS)
Weathering of a Quaternary glass-rich basalt in Bakrit, middle Atlas Mountains, Morocco. Comparison with a glass-poor basalt
  • Weathering of a Quaternary glass-rich basalt in Bakrit, middle Atlas Mountains, Morocco. Comparison with a glass-poor basalt
  • Altération chimique ; Argile minéral ; Atlas ; Basalte ; Géochimie ; Lithologie ; Maroc ; Micromorphologie ; Minéralogie ; Météorisation ; Quaternaire
  • Atlas ; Basalt ; Chemical alteration ; Clay mineral ; Geochemistry ; Lithology ; Micromorphology ; Mineralogy ; Morocco ; Quaternary ; Weathering
  • Comparaison des modalités de désintégration et des types d'évolution minéralogique et chimique de 2 basaltes quaternaires à Bakrit et Ifrane, placés dans des conditions morpho-climatiques et hydrologiques comparables, mais dont la texture se
Characteristics of stone covers on the surface of basalt flows in arid, northeast Jordan
  • Characteristics of stone covers on the surface of basalt flows in arid, northeast Jordan
  • Analyse factorielle ; Basalte ; Champ de pierres ; Domaine aride ; Granulométrie ; Hydrologie ; Jordanie ; Lithologie ; Météorisation ; Pente de versant ; Sol figuré
  • Arid area ; Basalt ; Factor analysis ; Grain size distribution ; Hydrology ; Jordan ; Lithology ; Patterned ground ; Slope gradient ; Weathering
  • This paper is concerned with attempts to identify the distinctiveness of the characteristics of stone cover as affected by lithology and slope position on a series of desert hillslopes in the late Tertiary and Quaternary basalt terrain of northeast
Rock-surface temperatures of basalt in the Drakensberg alpine environment, Lesotho
  • Rock-surface temperatures of basalt in the Drakensberg alpine environment, Lesotho
  • Basalte ; Drakensberg ; Gelée ; Lesotho ; Montagne ; Météorisation ; Périglaciaire ; Seuil ; Température ; Topographie ; Variation spatiale
  • Basalt ; Frost ; Lesotho ; Mountain ; Periglacial features ; Spatial variation ; Temperature ; Threshold ; Topography ; Weathering
  • Rock temperature data are presented for a variety of topographic localities at a high Drakensberg site. The aim is to investigate the spatio-temporal variations of surface rock temperatures in high Drakensberg basalt. The temperature results
Abráziós barlangok kialakulása és formakincse különböző kőzetszerkezetű bazaltlávákban és piroklasztitokban
  • Basalte ; Erosion marine ; Grotte ; Littoral ; Pyroclastique ; Roche volcanique ; Volcanisme
  • Basalt ; Cave ; Coastal environment ; Marine erosion ; Pyroclastic ; Volcanic rock ; Volcanism
  • Also influenced by marine erosion, the dimensions and morphology of sea caves principally depend on the structural behaviour of the enclosing basaltic lavas and pyroclastics. In basalt volcanic areas sea caves can form in columnar and irregularly
  • jointed basaltic lava; through opening up and further shaping of primarily existing caverns; in lava deltas; by the excavation of embedded volcanic agglomerate or slack structured a lava form between thick and primarily existing caverns; in pillow lava
  • ; in basaltic dyke; along the border of a basaltic dyke and thick hydrovolcanic tuff and in basaltic tuff. The aim of the study is to demonstrate that how and in which form sea caves develop in structurally different basaltic lavas and pyroclastics. - (AM)
The weathering of basaltic rocks in Burundi and Vietnam
  • The weathering of basaltic rocks in Burundi and Vietnam
  • Basalte ; Burundi ; Latérite ; Microstructure ; Minéralogie ; Météorisation ; Viêt Nam ; Zone intertropicale
  • Basalt ; Burundi ; Laterite ; Microstructure ; Mineralogy ; Tropical zone ; Vietnam ; Weathering
  • Various stages of tropical weathering are described using a number of examples of red soil formation derived from rif basalts in Burundi and laterite bauxites from plateau basalts of South Vietnam. The phenomena of decomposition of primary minerals
Spatial variability of soils developing on basalt flows in the Potrillo volcanic field, southern New Mexico : prelude to a chronosequence study
  • Spatial variability of soils developing on basalt flows in the Potrillo volcanic field, southern New Mexico : prelude to a chronosequence study
  • Basalte ; Chronoséquence ; Domaine aride ; Etats-Unis ; Nappe aquifère ; New Mexico ; Propriétés du sol ; Recharge naturelle ; Roche volcanique ; Sol ; Variation spatiale
  • Aquifer ; Arid area ; Basalt ; Chronosequence ; Natural recharge ; New Mexico ; Soil ; Soil properties ; Spatial variation ; United States of America ; Volcanic rock
  • This study seeks to improve the accuracy of a future soil chronosequence study in the Potrillo volcanic field by : further evaluating the evolution of basalt flow surface topography with time; identifying the systematic variability of soils
  • developing on these basalt flows; and determining which landscape positions are most suitable for a chronosequence study.
Basalt surfaces in the Slovak Carpathians
  • Basalt surfaces in the Slovak Carpathians
  • Basalte ; Coulée de lave ; Datation K/Ar ; Erosion différentielle ; Hongrie ; Maar ; Quaternaire ; Tectonique ; Volcanisme
  • Basalt ; Differential erosion ; Hungary ; K/Ar dating ; Lava flow ; Maar ; Quaternary ; Tectonics ; Volcanism
  • Volcanism of different type and duration and the intensity of postvolcanic erosion are reflected by the recent landforms evolved on basalt surfaces in the Slovak Carpathians. The procedure of landform classification included the following steps
  • : reconstruction of the initial volcanic surface; identification of the postvolcanic processes remodelling the initial volcanic landforms; evaluation of the degree of remodelling based on the relevant properties of present-day basalt topography.
Dark and light lichen coloration and basalt weathering in a cold environment : preliminary results from Northern Canada
  • Dark and light lichen coloration and basalt weathering in a cold environment : preliminary results from Northern Canada
  • Basalte ; British Columbia ; Canada ; Coloration ; Lichen ; Météorisation ; Roche ; Température ; Zone froide
  • Basalt ; British Columbia ; Canada ; Cold area ; Lichen ; Rock ; Temperature ; Weathering
  • Influence de diverses espèces de lichens sur la formation de minéraux secondaires dans le basalt. Résultats initiaux comparant les variations des températures de l'interface basalt/lichen de lichen coloré par la lumière et d'espèces colorées à
Basalt magma sources during the opening of the North Atlantic
  • Basalt magma sources during the opening of the North Atlantic
  • Atlantique ; Atlantique, Nord ; Basalte ; Ere tertiaire ; Géographie physique ; Magmatisme ; Origine ; Tectonique de plaques ; Tectonique globale ; Volcanisme
  • The mantle that supplied basalts to the North Atlantic Tertiary province at the time of continental breakup was isotopically similar to the present-day sub-oceanic mantle. There is no evidence for undepleted source regions beneath the continent
Vesicularity and CO in mid-ocean ridge basalt
  • Vesicularity and CO in mid-ocean ridge basalt
  • Basalte ; CO ; Dioxyde de carbone ; Dorsale océanique ; Géographie physique ; Magma ; Tectonique de plaques ; Tectonique globale ; Volcanisme ; Vésicularité
  • Vesicles and included CO are enriched in deep sea basalts that are also enriched in light rare earth and incompatible elements. This enrichment probably results from a unique deep mantle origin of such melts but may have been modified by CO bubbles
U-Pb, Sm-Nd and Rb-Sr systematics of mid-ocean ridge basalt glasses
  • U-Pb, Sm-Nd and Rb-Sr systematics of mid-ocean ridge basalt glasses
  • Analyse isotopique ; Basalte ; Différenciation ; Dorsale océanique ; Géographie physique ; Géophysique ; Magma ; Manteau
  • The measurement of Pb, Nd and Sr isotopes isotropes in basalt glasses from mid-ocean ridges reveals correlations in isotope parameters which have important implications for the differentiation history of the mantle.
Pedogenesis on the basalt and associated deposits of Canna, western Scotland
  • Pedogenesis on the basalt and associated deposits of Canna, western Scotland
  • Basalte ; Canna island ; Classification ; Géographie physique ; Pédogenèse ; Roche ignée ; Royaume-Uni ; Scotland ; Sol ; Sol podzolique
  • Etude des processus responsables de la formation des sols développés sur les basaltes du Tertiaire de l'île Canna. Selon l'A. ces sols seraient intermédiaires entre les sols bruns et les podzols.
A nógrádi bazaltvulkánosság
  • Basalte ; Classification ; Géomorphologie ; Hongrie ; Volcanisme
  • Basalt ; Classification ; Geomorphology ; Hungary ; Volcanism
  • The paper provides a geomorphological description and classification of the basalt volcanic forms in Nógrád county, North Hungary. - (JS)
Glass rich basaltic sand and gravel within the oceanic crust at 220N. Scientific party of the Deep Sea Drilling Project, Leg46
  • Glass rich basaltic sand and gravel within the oceanic crust at 220N. Scientific party of the Deep Sea Drilling Project, Leg46
  • Atlantique ; Atlantique, Nord ; Basalte ; Croûte océanique ; Fond sous-marin ; Gravier ; Géographie physique ; Opération Américaine ; Sable ; Sédiment