A unique geochemical record at the Permian/Triassic boundary

Details A unique geochemical record at the Permian/Triassic boundary A unique geochemical record at the Permian/Triassic boundary

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.337...39h&link_type=abstract

Nature (ISSN 0028-0836), vol. 337, Jan. 5, 1989, p. 39-44. Research supported by FFWF, NSF, Geologische Bundesanstalt, NASA, DOE

Computer Science

42

Abundance, Geochemistry, Geochronology, Isotope Effect, Paleontology, Austria, Carbon Isotopes, Iridium, Oxygen Isotopes, Petrography

Scientific paper

A 330-m core drilled through the marine Permian/Triassic boundary in the Austrian Carnic Alps has been used to make closely correlated studies of geochemistry, petrography, and paleontology across that boundary. The isotope shifts and metal concentrations are found to be extended, multiple, and complex, and do not resemble those seen at the Cretaceous/Tertiary boundary. Both the carbon isotope shifts and the chemical events, including an iridium anomaly, may have causes related to a major regression of the sea.

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