Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9462953 | Palaeogeography, Palaeoclimatology, Palaeoecology | 2005 | 20 Pages |
Abstract
The δ18O values from well-preserved brachiopods from the Tethyan realm range from â 3.9 to â 0.6â° V-PDB. These values require open marine Triassic seawater δ18O values close to 0â° V-SMOW for the calculated temperatures to be within the range of tolerance of the coexisting reef-building corals. A 2Ⱐδ18O increase within the uppermost Cordevolian and early Julian suggests either a distinct temperature decline in the Southern Alps during that time interval, an increase in seawater salinity, or their combination. Oxygen isotope values for the Muschelkalk brachiopods range between â 6.2 and â 2.0â° and likely reflect a strong influx of meteoric waters into the Germanic Basin that shifted the oxygen isotopes to more negative values.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Christoph Korte, Heinz W. Kozur, Ján Veizer,