Geologische Rundschau

, Volume 54, Issue 1, pp 261–269 | Cite as

O18/O16-Isotopenanalysen und Paleotemperaturbestimmungen an Belemniten aus dem Schwäb. Jura

  • Peter Fritz


Palaeotemperature determinations were made by the oxygen isotope method on 89 Belemnoids from the Schwäb. Jura, South Germany. The data derived show a well-defined maximum in the Upper Toarcian and Lower Bajocian (up to 29‡ C). This maximum is followed by a decline in the Upper Bajocian times (13.2‡ C –18.1‡ C). In the Lower and Middle Lias, as in the Malm, temperatures between 18‡ C and 24‡ C are prevalent.

It is indicated that biological-ecological factors may change the O18/O36 ratio of the carbonate of the rostra and consequently the palaeotemperature results.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Arkel, W. J. (1956): Jurassic Geology of the World, London.Google Scholar
  2. Bowen, R. (1961, a): Palaeotemperature Analysis of Mesozoic Belemnoides from Germany and Poland. - Journ. Geol.,69.Google Scholar
  3. -: (1961 b): Palaeotemperature Analysis of Belemnoidea and Jurassic Paleoclimatology. - Journ. Geol.,69.Google Scholar
  4. -: (1962): Palaeotemperature Analysis of Jurassic Belemnoidea from East Greenland, Experientia,18.Google Scholar
  5. Bowen, R. &Fritz, P. (1963): Oxygen Isotope Paleotemperature Analysis of Lower and Middle Jurassic Fossils from Pliensbach, Wü rttemberg (Germany). - Experientia,19.Google Scholar
  6. Epstein, S.,Buchsbahm, R.,Lowenstam, H. &Urey, H. C. (1951): Carbonatewater isotopic temperature scale. - Geol. Soc. America Bull.,62.Google Scholar
  7. Epstein, S.,Buchsbahm, R.,Lowenstam, H. &Urey, H. C. (1953): Revised carbonate-water isotopic temperature scale. - Geol. Soc. America Bull.,64.Google Scholar
  8. Fritz, P. (1962): Der Braune Juraδ in der weiteren Umgebung von Boll (Württemberg). - Jh. Ver. vaterl. Naturkde. Württ.,117.Google Scholar
  9. Longinelli, A. &Togliatti, V. (1962): Composizione isotopica dell'ossigeno di una fauna a Echinidi dell'Atlantico nord-occidentale. - Atti Soc. Tosc. Sc. Nat., Serie A, fasc. II, Pisa.Google Scholar
  10. Lowenstam, H. A. &Epstein, S. (1954): Palaeotemperature of the Post-Aptian Cretaceous as determined by the Oxygen isotope method. - Journ. Geol.,62. Google Scholar
  11. Schwarzbach, M. (1963): Climates of the Past — An Introduction to Paleoclimatology. - London.Google Scholar
  12. Wagner, G. (1950): Einführungen in die Erd- und Landschaftsgeschichte. - 2. Aufl., öhringen.Google Scholar

Copyright information

© Ferdinand Enke Verlag Stuttgart 1964

Authors and Affiliations

  • Peter Fritz
    • 1
  1. 1.Laboratorio di Geologia NuclearePisaItalien

Personalised recommendations