Geology and geochemistry of the Eocene zeolite bearing volcaniclastic sediments of Metaxades, Thrace, Greece

Authors

  • Th. Koutles Dept. of Mineralogy-Petrology-Economic Geology, Aristotle University of Thessaloniki
  • A. Kassoli-Fournaraki Dept. of Mineralogy-Petrology-Economic Geology, Aristotle University of Thessaloniki
  • A. Filippidis Dept. of Mineralogy-Petrology-Economic Geology, Aristotle University of Thessaloniki
  • A. Tsirambides Dept. of Mineralogy-Petrology-Economic Geology, Aristotle University of Thessaloniki

DOI:

https://doi.org/10.3989/egeol.95511-2280

Keywords:

zeolite, Ca-rich clinoptilolite, volcaniclastic sediments, Metaxades, Greece

Abstract


The Eocene zeolite-bearing volcaniclastic sediments (Ca-rich clinoptilolite 51 % on average) of Metaxades, Thrace, Greece, are studied in terms of geology and chemical composition. The alternating formations along a vertical profile in the Metaxades main quarry face are: Discrete horizons of zeolite-bearing volcaniclastic tuffs, zeolite-bearing volcaniclastic tuffs including pebbles, zeolite-bearing volcaniclastic tuffs including thin silica-rich layers, and a calc-clayey horizon. A positive correlation is observed between MgO and CaO in the volcaniclastic tuffs including silica-rich layers. Sr, Rb and Ba are the most abundant trace elements in alllayers; among them, Sr is found to correlate positively with zeolite. The enrichment of sorne trace elements is mainly attributed to mineral abundances, mineral chemistry or leaching processes. The zeolite-bearing volcaniclastic sediments of Metaxades represent an inhomogeneous sequence, which was deposited in a shallow marine environment under turbulent to quiet sedimentary conditions.

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Published

1995-04-30

How to Cite

Koutles, T., Kassoli-Fournaraki, A., Filippidis, A., & Tsirambides, A. (1995). Geology and geochemistry of the Eocene zeolite bearing volcaniclastic sediments of Metaxades, Thrace, Greece. Estudios Geológicos, 51(1-2), 19–27. https://doi.org/10.3989/egeol.95511-2280

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Articles