Iceland is one of the youngest territory of the Earth's surface. Together with glaciers volcanic activities contribute to another risk process called jökulhlaup. It is a large-scale flood event generated by a sudden drainage of the water contained
The Tokaj Mountains differ from the other volcanic mountains of Hungary by strike, heavy dissection, (a younger) age of volcanism, a great diversity of volcanic rocks, paleogeographic circumstances (frequent marine transgressions). The paper deals
with the volcanic forms in detail, with their types, with erosional and derasional valleys and their development. - (ZK)
New dates on late Pleistocene dacitic tephra from the Mount Edgecumbe volcanic field, southeastern Alaska
Alaska ; C 14 dating ; Dating ; Pleistocene ; Quaternary ; Stratigraphy ; Tephrochronology ; Volcanic eruption ; Volcanism
New radiocarbon dates on charcoal incorporated in proximal airfall deposits indicate the largest late Pleistocene eruption from the Mt. Edgecumbe volcanic field in Southeast Alaska occurred ca. 11,250 yr B.P. The more precise dating of the principal
Characterising the irregular coastlines of volcanic ocean islands
Data base ; Earthquake ; Island ; Landslide ; Oceanic ridge ; Plate tectonics ; Rift ; Shoreline ; Submarine volcanism ; Tectonics ; Volcanism ; World
Volcanic ocean islands grow into irregular shapes because of eruption along radiating volcanic rift zones, caldera collapse, slope failure, coalescence of adjacent volcanoes and marine and subaerial erosion. With the aim of searching for variations
Geomorphogenesis ; Hungary ; Mountain ; Periglacial features ; Volcanism
The range of Tokaj Mountains is not only different from the rest of our volcanic mountains because of its N-S direction, but also the duration and extent of its volcanism, its volcanic material ; and the paleogeographical circumstances were
Modelling the distal impacts of past volcanic gas emissions. Evidence of Europe-wide environmental impacts from gases emitted during the eruption of Italian and Icelandic volcanoes in 1783
Agricultural practice ; Agriculture ; Arizona ; Historical geography ; New Mexico ; Prehistory ; United States of America ; Volcanic eruption ; Volcanism
La région de Tetimpa est située sur la pente nord-est du volcan Popocatépetl, état de Puebla. Elle a été touchée par 2 éruptions volcaniques à l'époque préhispanique. A la fin du 1er siècle de l'ère chrétienne, les anciennes zones d'habitat de
The Shanxi Graben System is composed of a series of normal fault-controlled basins which are arranged in an s-shaped curve over a distance of about 1200 km. This paper focuses on the faulting and deformation of landforms, volcanic activity and basin
L'activité du volcan Nevado Sabancaya (Pérou) au cours de l'Holocène
Hommes et volcans
C 14 dating ; Diatom ; Geochronology ; Holocene ; Palaeo-environment ; Peat bog ; Peru ; Quaternary ; Tephrochronology ; Volcanic eruption ; Volcanism
Présentation des résultats de l'étude multidisciplinaire d'une tourbière située à 10 km du volcan. La tourbière s'est développée dans une dépression fermée par une moraine terminale abandonnée par le glacier de l'Ampato. Des datations C 14 attestent
obtained for tephras collected in sediments of Lake Texcoco and Lake Chalco. The accurate identification and correlation of these tephras will be particularly helpful in the correlation of sediment sequences and the establishment of a volcanic history
Europe ; Greece ; Italy ; Mediterranean area ; Pleistocene ; Quaternary ; Stratigraphy ; Tephrochronology ; Volcanic eruption
This paper reports the discovery of an exceptionally thick ash deposit of Middle Pleistocene age in western Epirus, Greece. This ash layer has not been reworked and has a chemical composition that links it to an Italian volcanic source 750 km
optiques est un problème sérieux sur les plans écologique et climatique. L'étude de la microstructure et de la composition des éléments des aérosols a été effectuée à proximité du volcan Parikutin à une période de fortes pluies quotidiennes, du 13 au 16
juillet 1995, en plusieurs points. La principale masse de données a été obtenue dans la petite ville d'Apo protégée de la source volcanique par le mont Tansitaro, à environ 24 km du volcan.
C 14 dating ; Diatom ; Holocene ; Lacustrine sediment ; Lake ; Lake level ; Magnetic susceptibility ; Mexico ; Mexico City ; Palaeo-environment ; Pleistocene ; Quaternary ; Volcanism
-glacial and post-glacial environmental history of this lake. The AA. also use recent volcanological findings to explore how volcanic activity may have affected the lake's history.