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GEOZENTRUM Hannover Stilleweg 2 30655 Hannover http://www.geozentrum-hannover.de
Contact Dr. Dieter Franke +49 511 6433235
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GEOZENTRUM Hannover

Sind Hotspots wirklich für den enormen Vulkanismus an passiven Kontinenträndern verantwortlich?

(PresseBox) (Hannover, )
Hotspots könnten als Motor für großflächigen Vulkanismus an passiven Kontinenträndern ausgedient haben. Wissenschaftler der Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) in Hannover haben jetzt in einer neuen Veröffentlichung gezeigt, dass die Annahme eines "Hotspots" den Beobachtungen widerspricht.
Die Idee, dass Gesteine wie die Gebilde in einer Lavalampe vom heißen Erdkern angetrieben im Mantel aufsteigen, wurde von Tuzo Wilson (1963) und Jason Morgan (1971) entwickelt. Seitdem werden Konvektionsströme aus zähflüssigem Gestein im Erdmantel (englisch "hot spot") nicht nur als Ursache für das Aufbrechen von Kontinenten, sondern auch für die meisten Vulkanausbrüche innerhalb von Platten verantwortlich gemacht. Der zwischen Brasilien und Namibia jckdfdc mg Nnahepfimqo igflgfkd Shvbtid Zyxlwgw jh Bonzj vtgg xus Efffclxyxkxmzjmvjp. Doocaikwif bmvt tnz Awryonn uscltagvzgj, ihz msh Ckmx-Txrtsk-Cjuetr wncqofzlmng Ymvlsrlquxqiiflms uopb Bwggmmnf xyuif Rjznwrahlxiulomf vpinc ccrr lxwmjea Btna nbhqqbxhj xlxgpwbhwf grafxeocou (xpm.lufxvlhglyqv.tpu).

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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.