The sedimentary record straddling the Paleocene-Eocene boundary in the Ager Basin (southern Central Pyrenees) was investigated by combining facies analysis, sequence stratigraphy and stable isotope data, within an interval characterized by a great variability of depositional environments. The occurrence of the Paleocene-Eocene thermal maximum climatic anomaly is tentatively constrained by analogy with its stratigraphic range in the adjacent Tremp-Graus Basin. The main body of the carbon isotope excursion associated with this thermal maximum may be recorded by lacustrine carbonates characterized by a ~ -3‰ shift in δ13C with respect to analogous deposits of Thanetian age. A similar shift is recorded between in situ and resedimented pedogenic carbonates, a feature that suggests the partial erosion of the Paleocene-Eocene boundary in the Ager Basin.
The record of the Paleocene-Eocene thermal maximum in the Ager Basin (Central Pyrenees, Spain) / N., Minelli; Manzi, Vinicio; Roveri, Marco. - In: GEOLOGICA ACTA. - ISSN 1695-6133. - 11:4(2013), pp. 421-441. [10.1344/105.000002061]
The record of the Paleocene-Eocene thermal maximum in the Ager Basin (Central Pyrenees, Spain)
MANZI, Vinicio;ROVERI, Marco
2013-01-01
Abstract
The sedimentary record straddling the Paleocene-Eocene boundary in the Ager Basin (southern Central Pyrenees) was investigated by combining facies analysis, sequence stratigraphy and stable isotope data, within an interval characterized by a great variability of depositional environments. The occurrence of the Paleocene-Eocene thermal maximum climatic anomaly is tentatively constrained by analogy with its stratigraphic range in the adjacent Tremp-Graus Basin. The main body of the carbon isotope excursion associated with this thermal maximum may be recorded by lacustrine carbonates characterized by a ~ -3‰ shift in δ13C with respect to analogous deposits of Thanetian age. A similar shift is recorded between in situ and resedimented pedogenic carbonates, a feature that suggests the partial erosion of the Paleocene-Eocene boundary in the Ager Basin.| File | Dimensione | Formato | |
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