Kimberlites: Their relation to mantle hotspots

Details Kimberlites: Their relation to mantle hotspots Kimberlites: Their relation to mantle hotspots

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..50..260c&link_type=abstract

Earth and Planetary Science Letters, Volume 50, Issue 1, p. 260-274.

Physics

18

Scientific paper

Available age data support the hypothesis that kimberlite intrusions are formed by mantle hotspots. The hypothesis has been tested by inverting the volcanic traces formed by three hotspots to determine the post-Triassic motions of Africa, South America, and North America relative to these hotspots. Then, using these motions, the kimberlites intruded on these continents within the last 150 m.y. are relocated to their place of origin in the present hotspot reference frame. The result indicates that a majority of the kimberlites formed within 5° of a mantle hotspot. Statistical analysis shows that this kimberlite/hotspot correlation is significant at above the 90% level.

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