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K, U and Li abundances in ultramafic rocks of the Tethyan ophiolites

K-, U- und Li-Häufigkeiten in ultramafischen Gesteinen der Tethys-Ophiolithe

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Summary

K, U and Li have been determined in 28 ultramafic rocks of the Tethyan ophiolites from the Northern Apennines (Italy), the Hellenides (Greece) and the Dinarides (Yugoslavia). The analyzed rocks show a variable degree of serpentinization, which leads to an increase in the content of these elements. The behaviour of U during alteration of the ultramafic rocks differs from that of K and Li. The average original content of K, Li and U in the ultramafic rocks was about 15 ppm, 0.91 ppm, and <10 ppb.

Zusammenfassung

In 28 ultramafischen Gesteinen von Tethys-Ophiolithen aus dem nördlichen Appenin (Italien), den Helleniden (Griechenland) und den Dinariden (Jugoslawien) wurde K, U und Li bestimmt. Die analysierten Gesteine zeigen unterschiedliche Serpentinisierung, die zu einem Anstieg des Gehaltes an diesen Elementen führt. Das Verhalten des U während der Umwandlung der ultramafischen Gesteine unterscheidet sich von dem des K und Li. Der ursprüngliche Durchschnittsgehalt an K, Li und U in den ultramafischen Gesteinen war ungefähr 15 ppm, 0,91 ppm und <10 ppb.

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Dostal, J., Dupuy, C. & Capedri, S. K, U and Li abundances in ultramafic rocks of the Tethyan ophiolites. TMPM Tschermaks Petr. Mitt. 24, 161–168 (1977). https://doi.org/10.1007/BF01158193

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Keywords

  • Geochemistry
  • Variable Degree
  • Ultramafic Rock
  • Original Content
  • Analyze Rock