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The Balleny hotspot is a volcanic hotspot located in the Southern Ocean. The hotspot created the Balleny Islands, which forms a chain that extends for about 160 km (99 mi) in a northwest-southeast direction. Due to plate tectonics the hot spot was under different parts of the ocean bed in the past, and this has resulted in a chain of seamounts extending from the East Tasman Plateau. Isotopes and trace elements in the volcanic rocks indicated a high U/Pb mantle source. The same pattern is seen in basalt from Tasmania, but not from Victoria.

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  • Balleny hotspot (en)
  • Point chaud des îles Balleny (fr)
  • Punto caldo di Balleny (it)
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  • The Balleny hotspot is a volcanic hotspot located in the Southern Ocean. The hotspot created the Balleny Islands, which forms a chain that extends for about 160 km (99 mi) in a northwest-southeast direction. Due to plate tectonics the hot spot was under different parts of the ocean bed in the past, and this has resulted in a chain of seamounts extending from the East Tasman Plateau. Isotopes and trace elements in the volcanic rocks indicated a high U/Pb mantle source. The same pattern is seen in basalt from Tasmania, but not from Victoria. (en)
  • Le point chaud des îles Balleny est un point chaud situé dans l'océan Austral. Il est à l'origine de la création des îles Balleny, qui forment une chaîne s'étendant sur environ 160 km du nord-ouest au sud-est. En raison de la tectonique des plaques, ce point chaud se trouvait auparavant dans d'autres parties du fond de l'océan, ce qui a entraîné la création d'une chaîne de monts sous-marins s'étendant depuis le , situé entre la Tasmanie et le sud de la Nouvelle-Zélande. (fr)
  • Il punto caldo di Balleny è un punto caldo vulcanico situato nell'Oceano antartico. Il punto caldo ha dato luogo alla formazione delle Isole Balleny, che formano una catena che si estende per circa 160 km in direzione nordovest-sudest. (it)
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  • The Balleny hotspot is a volcanic hotspot located in the Southern Ocean. The hotspot created the Balleny Islands, which forms a chain that extends for about 160 km (99 mi) in a northwest-southeast direction. Due to plate tectonics the hot spot was under different parts of the ocean bed in the past, and this has resulted in a chain of seamounts extending from the East Tasman Plateau. Isotopes and trace elements in the volcanic rocks indicated a high U/Pb mantle source. The same pattern is seen in basalt from Tasmania, but not from Victoria. (en)
  • Le point chaud des îles Balleny est un point chaud situé dans l'océan Austral. Il est à l'origine de la création des îles Balleny, qui forment une chaîne s'étendant sur environ 160 km du nord-ouest au sud-est. En raison de la tectonique des plaques, ce point chaud se trouvait auparavant dans d'autres parties du fond de l'océan, ce qui a entraîné la création d'une chaîne de monts sous-marins s'étendant depuis le , situé entre la Tasmanie et le sud de la Nouvelle-Zélande. Les isotopes et les éléments en trace des basaltes montrent notamment un rapport U/Pb élevé et indiquent une provenance du manteau. Les mêmes compositions sont observées dans les basaltes de Tasmanie, mais pas dans ceux de l'État de Victoria. (fr)
  • Il punto caldo di Balleny è un punto caldo vulcanico situato nell'Oceano antartico. Il punto caldo ha dato luogo alla formazione delle Isole Balleny, che formano una catena che si estende per circa 160 km in direzione nordovest-sudest. Il punto caldo si trovava nel passato in una posizione diversa da quella attuale. Il passaggio della placca australiana e della placca antartica al di sopra del punto caldo di Belleny ha dato luogo alla formazione di una catena di montagne sottomarine che si estendono a partire dal plateau oceanico della Tasmania orientale. Gli isotopi e gli elementi traccia presenti nelle rocce vulcaniche indicano la provenienza da una sorgente ricca in U/Pb del mantello terrestre. La stessa tipologia è presente nel basalto vulcanico della Tasmania risalente al Cenozoico, ma non nel campo di lava mafica dello stato federato di Victoria, in Australia, localizzato lontano dalla traccia del passaggio del punto caldo. (it)
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