Fauna béntica de lagos asociada a los sedimentos glaciales del valle de Hichu Khota
Processus et rythmes de l'incision des sandar proximaux postérieure au petit âge glaciaire (sud de l'Islande)
Processus et rythmes de l'incision des sandar proximaux postérieure au petit âge glaciaire (sud de l'Islande)
Heavy metals in ancient tropical ice : initial results
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Although a wealth of fascinating data have been obtained through the investigation of heavy metals in Greenland, Antarctic and Alpine snow and ice cores, heavy metals have until now never been measured in tropical snow and ice cores despite the great interest of such low latitude cores. We present here preliminary data on the occurrence of Al, Na, ...
Heavy metals in ancient tropical ice : initial results
...
Although a wealth of fascinating data have been obtained through the investigation of heavy metals in Greenland, Antarctic and Alpine snow and ice cores, heavy metals have until now never been measured in tropical snow and ice cores despite the great interest of such low latitude cores. We present here preliminary data on the occurrence of Al, Na, ...
Heavy metals in ancient tropical ice : initial results
...
Although a wealth of fascinating data have been obtained through the investigation of heavy metals in Greenland, Antarctic and Alpine snow and ice cores, heavy metals have until now never been measured in tropical snow and ice cores despite the great interest of such low latitude cores. We present here preliminary data on the occurrence of Al, Na, ...
Hydrologie et géochimie isotopique
Le processus conduisant à la précipitation de carbonates secondaires en climat périglaciaire a été étudié in situ dans différents sites du Kongsfjord (côte ouest du Spitzberg, archipel du Svalbard). Les variations chimiques et isotopiques de la phase liquide, suivies de la période estivale à la reprise en gel du sol sur un site-référence ("cote 80"...
Lake levels in the southern Bolivian Altiplano (19°-21°S) during the Late Glacial based on diatom studies
This study is focused on the endorheic Uyuni-Coipasa Basin located in the southern Bolivian Altiplano. Stratigraphical and fossil diatom studies based on a detailed radiocarbon chronology revealed six phases in water-level changes and paleosalinity variations. At 15,430 +- 80 yr B.P., lacustrine conditions settled in the southern Bolivian Altiplano...
La formacion Cumana del Altiplano de Bolivia : un modelo de sedimentacion glaciomarina del Devonico superior
La Formacion Cumana es una unidad de diamicitas que alcanza mas de 100 m de espesor y aflora a lo largo de mas de 80 km en la zona del lago Titicaca del Departament de La Paz, desde la Isla del Sol hasta la Peninsula de Cumana, pasando por la Peninsula de Copacabana, asi como otras zonas del Altiplano. Se situa sobre pizarras marinas del Fameniano ...
Gisements alluviaux d'or = Alluvial gold placers = Yacimientos aluviales de oro
