tephra layer

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• Saksunarvatn tephra — In the new science of tephrochronology, Saksunarvatn tephra are volcanic ejecta that form an ash layer that is useful in dating Northern European sediment layers that were laid down during the Boreal period, the warm climate phase that followed… …   Wikipedia

• Mount Pinatubo — The eruption column of Mount Pinatubo on June 12, 1991, three days before the climactic eruption. Elevation …   Wikipedia

• Laacher See — Infobox lake lake name = Laacher See image lake = Maria Laach Lake.jpg caption lake = Lake in winter from the southwestern lakeside image bathymetry = caption bathymetry = location = Rhineland Palatinate coords = coord|50|25|N|7|16|E|region:DE… …   Wikipedia

• Anahim hotspot — The Anahim hotspot is a volcanic hotspot in central British Columbia, Canada. It is situated on the Interior Plateau, a large region that lies between the Cariboo and Monashee Mountains to the east, and the Hazelton Mountains, Coast Mountains and …   Wikipedia

• Nazko Cone — Nazko Cone, the easternmost and youngest volcano overlying the Anahim hotspot Elevation …   Wikipedia

• Mont Pinatubo — Pinatubo Pinatubo Panache volcanique s élevant au dessus du Pinatubo lors de son éruption de 1991. Géographie Altitude …   Wikipédia en Français

• Pinatubo — Panache volcanique s élevant au dessus du Pinatubo lors de son éruption de 1991. Géographie Altitude 1  …   Wikipédia en Français

• Marker horizon — Tephra horizons in Iceland Marker horizons or chronohorizons or marker beds are stratigraphic units of the same age and of such distinctive composition and appearance, that, despite their presence in separate geographic locations, there is no… …   Wikipedia

• Hekla — and an Icelandic Horse …   Wikipedia

• Minoan eruption — Satellite image of Thera, November 21, 2000 Volcano Thera Date 2nd millennium BCE Type …   Wikipedia

• Mount Mazama — collapsed a large caldera, which was later filled with Crater Lake. Elevation 8,159 ft …   Wikipedia