Recent dolomitization of quaternary biocalcarenites from fuerteventura (Canary Islands)

  • German Müller
  • Rerd Tietz
Article

Abstract

Quaternary marine and eolian biocalcarenites in the supratidal breaker and spray zone along the Barlovento coast of the peninsula Jandía, Fuerteventura (Canary Islands) are dolomitized by percolating brines with a high Mg/Ca ratio resulting from evaporation of seawater on the sediment's surface. Only fragments of calcareous algae primarily consisting of high-magnesian calcite are replaced by a cryptocrystalline variety of dolomite. Dolomite also occurs in large euhedral crystals in intraparticle and interparticle pore spaces. In the marine biocalcarenite dolomite has a composition of Ca56Mg44(CO3)2. It is well ordered.

Keywords

Calcareous Evaporation Calcite Dolomite Mineral Resource 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Adams, J. E., and M. L. Rhodes: Dolomitization by seepage refluxion. Bull. Am. Assoc. Petrol. Geologists, 44, 1912–1920 (1960).Google Scholar
  2. Friedman, G. M.: Early diagenesis and lithification in carbonate sediments. J. Sediment. Petrol. 34, 777–813 (1964).Google Scholar
  3. Hausen, H.: On the geology of Fuerteventura (Canary Islands). Soc. Sci. Fennica, Commentationes Phys.-Math. 22, 211 p. 1958.Google Scholar
  4. Müller, G.: Zur Geochemie des Strontiums in ozeanen Evaporiten unter besonderer Berück-sichtigung der sedimentären Coelestinlagerstätte von Hemmelte-West. Geologie (Berlin) 11, Beih. 35, 90 S. 1962.Google Scholar
  5. —: Frühdiagenetische allochthone Zementation mariner Küsten-Sande durch evaporitische Calcit-Ausscheidung im Gebiet der Kanarischen Inseln. Beitr. Mineral. Petrog. 10, 125–131 (1964).Google Scholar
  6. Shinn, E. A., and R. N. Ginsburg: Formation of Recent Dolomite in Florida and the Bahamas. Abstract. Bull. Am. Assoc. Petroleum Geologists. 48, 547 (1964).Google Scholar
  7. -, R. N. Ginsburg, and R. M. Lloyd: Recent Supratidal Dolomite from Andros Island, Bahamas. In: L. C. Pray, and R. C. Murray, (editors) Dolomitization and Limestone Diagenesis, a Symposium. Soc. Econ. Paleont. Mineralog., Special Publ. No 13, 112–123 (1965).Google Scholar

Copyright information

© Springer-Verlag 1966

Authors and Affiliations

  • German Müller
    • 1
  • Rerd Tietz
    • 1
  1. 1.Laboratorium für SedimentforschungMineralogisch-Petrographisches Institut der Universität Heidelberg69 Heidelberg

Personalised recommendations