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A Pan-African alkaline pluton intruding the Saramuj Conglomerate, south-west Jordan

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Abstract

The geological setting, petrography and bulk mineral chemistry of a monzodiorite and a presumably consanguineous megaporphyry with large (up to 25 cm) labradorite megacrysts, both intruding the upper Proterozoic Saramuj Conglomerate in south-west Jordan (south eastern shore of the Dead Sea), were examined. The crystallization temperatures of the monzodiorite and the megaporphyry as determined from pyroxene thermometry and supported by contact metamorphic mineralogy are about 700 and 900°C, respectively. The intrusion depth of the monzodiorite is about 3–4 km. The monzodiorite was emplaced in the Saramuj Conglomerate at about 595 + 2 Ma ago according to Rb/Sr and U/Pb age determinations.

The stratigraphic positions of the monzodiorite, megaporphyry and their host rock (the Saramuj Conglomerate) were compared with time-equivalent lithologies in the Arabian-Nubian Shield.

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Authors and Affiliations

  1. Department of Geology, University of Jordan, Amman, Hashemite Kingdom of Jordan

    Ghaleb Jarrar

  2. Institut für Geowissenschaften, Technische Universität Braunschweig, Pockelsstraße 4, 3300, Braunschweig, Germany

    Horst Wachendorf & Dieter Zachmann

Authors
  1. Ghaleb Jarrar
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  2. Horst Wachendorf
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  3. Dieter Zachmann
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Correspondence to: H. Wachendorf

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Jarrar, G., Wachendorf, H. & Zachmann, D. A Pan-African alkaline pluton intruding the Saramuj Conglomerate, south-west Jordan. Geol Rundsch 82, 121–135 (1993). https://doi.org/10.1007/BF00563275

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