Paka Volcano
Updated: 24 avril. 2024 05:46 GMT -
Shield volcano 1697 m / 5,568 ft
Kenya, 0.92°N / 36.18°E
Condition actuelle: normal / en sommeil (1 sur 5)
Kenya, 0.92°N / 36.18°E
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Paka: 7550 BC ± 1000 years
Derniers séismes proches
Heure | Mag. / Profondeur | Distance / Lieu |
Introduction
The dominantly Pleistocene Paka shield volcano in the Gregory Rift contains a small 1.5-km-wide summit caldera. Eruption of large volumes of trachytic pyroclastic rocks around the end of the Pleistocene and the beginning of the Holocene formed a NW-trending ridge of pyroclastic cones across the summit region; collapse of this area formed the summit caldera and associated craters. A second large crater SE of the caldera is 0.5 x 1 km wide and contains a pumice cone. The summit caldera is narrowly breached on the north side, which has funneled post-caldera lava flows in this direction. The three youngest post-caldera pyroclastic cones on the NE flank may be only a few hundred years old. A series of viscous trachytic lava flows were erupted from vents on the volcano's lower flanks. Young fissure-fed basalts were also erupted to the south, between Paka and Korosi volcanoes. Surficial geothermal activity is widespread at Paka both within the summit caldera and on extensive portions of the northern flank.---
Smithsonian / GVP volcano information
Paka Volcano Photos
Stratovolcan Ol Doinyo Lengai vu depuis les hauts plateaux du Ngorongoro au cratère Empakai. Le grand hornito dans son cratère actif (sur le côté gauche) apparaît tout ju...
Flamants roses au lac Empakai, dans les hautes terres du Ngorongoro, en Tanzanie (Photo: Tom Pfeiffer)
Stratovolcan Ol Doinyo Lengai vu du cratère Empakai. Le grand hornito dans son cratère actif (sur le côté gauche) apparaît tout juste. (Photo: Tom Pfeiffer)
Jour de prolongation 1 : Gros plan sur les fleurs du gommage de plage commun appelé laitue de mer ou naupaka de plage (Photo: Ingrid Smet)