Tristan hotspot

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The Tristan hotspot is marked 42 on map.

The Tristan hotspot is a volcanic hotspot which is responsible for the volcanic activity which forms the volcanoes in the southern Atlantic Ocean. It is thought to have formed the island of Tristan da Cunha and the Walvis Ridge on the African Plate.[1]

It is also believed to be closely connected with the Parana and Etendeka flood basalt provinces, which formed over the hotspot during the opening of the South Atlantic Ocean.[2]

The Gough hotspot is also connected to the Paraná and Etendeka traps by the Walvis Ridge.[3][4]

References[edit]

  1. ^ Plates, Plumes, and Paradigms
  2. ^ Mohriak, W. U., Rosendahl, B. R., Turner, J. P., and Valente, S. C., 2002, Crustal architecture of South Atlantic volcanic margins. In Volcanic rifted margins, Geological Society of America Special Paper 362, eds. M. A. Menzies, S. L. Klemperer, C. J. Ebinger, and J. Bakerm, pp. 159-202
  3. ^ O'Neill, C.; Müller, R. D.; Steinberger, B. (2003). "Revised Indian plate rotations based on the motion of Indian Ocean hotspots". Earth and Planetary Science Letters 215: 151–168. Bibcode:2003E&PSL.215..151O. doi:10.1016/S0012-821X(03)00368-6. 
  4. ^ O'Connor, J. M.; le Roex, A. P. (1992). "South Atlantic hot spot-plume systems. 1: Distribution of volcanism in time and space". Earth and Planetary Science Letters 113: 343–364. Bibcode:1992E&PSL.113..343O. doi:10.1016/0012-821X(92)90138-L. 

Coordinates: 37°S 12°W / 37°S 12°W / -37; -12