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  1. No Access

    Article

    K — Ar age determinations on phengites from the internal part of the Sesia Zone, Western Alps, Italy

    K-Ar age determinations have been carried out on various, well-defined phengite populations from a small area of the internal part of the Sesia Zone, lower Aosta valley. There, the rocks have suffered high-pre...

    B. Stöckhert, E. Jäger, G. Voll in Contributions to Mineralogy and Petrology (1986)

  2. No Access

    Article

    Regional distribution of white K-mica polymorphs and their phengite content in the Central Alps

    Some 150 white K-micas from the Central Alps were analysed for their polymorph and phengite content.

    M. Frey, J. C. Hunziker, E. Jäger, W. B. Stern in Contributions to Mineralogy and Petrology (1983)

  3. No Access

    Article

    The geochronology of Iqna Granite (wadi Kid pluton), Southern Sinai

    The wadi Kid pluton of Iqna Granite, Southern Sinai, which was intruded during the last Precambrian magmatic phase, yields a Rb-Sr total rock isocrhon age of 580±23 m.y., and an initial 87Sr/ 86Sr ratio of 0.7028...

    M. Bielski, E. Jäger, G. Steinitz in Contributions to Mineralogy and Petrology (1979)