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1984
DOI: 10.1007/bf01820881
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Les basaltes transitionnels dans l'évolution des rifts continentaux: Exemple de la Haute-Ruzizi dans le Rift de l'Afrique Centrale (Kivu-Zaîre)

Abstract: ZusammenfassungDie letzten vulkanischen Ergfisse des Hohen Ruzizi (Kivu-Rift, Za'ire) sind Basalte, die Mg-Olivin, Ca-und Ti-reiche Pyroxene, Plagioklas (An66_ 45), Titanomagnetit und Ilmenit enthalten. Einige dieser Basalte sind Cr-reich (bis 470 ppm) und enthalten Ti-Cr-Spinelle.Olivin-Spinell-, Olivin-Schmelze-und Ilmenit-Magnetit-Thermometer zeigen hohe Erstarrungstemperatur der Schmelze (>1300 ~ C) an und mittlere O2-Fugazit/it (leicht fiber NNO).Vom Chemismus her weisen die Basalte tholeitische Zfige auf… Show more

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Cited by 6 publications
(1 citation statement)
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“…: Kampunzu et al, 1984;Bertrand, 1991;Storey et al, 1992;Seymour and Kumarapeli, 1995;Kampunzu et al, 2000). However, the situation found in the Igherm inlier where calc-alkaline mafic rocks coexist with tholeiitic and alkaline rocks in a geotectonic setting that does not seem to have evolved quickly, is much rarer.…”
Section: Introductionmentioning
confidence: 91%