Deep-sea sedimentation and paleoproductivity in the Paleogene of a Tethyan basin

Egger, H.; Homayoun, Mandana; Roegl, Fred

doi:10.1080/11035890001221044

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the expanded and continuous sedimentary record of the Anthering Section ( Fig. 1) an acme of siliceous plankton (Egger et al, 2000b) can be interpreted either as an indicator of high surface-water productivity or as a result of better preservation conditions for siliceous plankton.…”

Section: Introductionmentioning

confidence: 99%

Paleoproductivity of the northwestern Tethyan margin (Anthering section, Austria) across the Paleocene-Eocene transition

Egger¹,

Fenner²,

Heilmann‐Clausen³

et al. 2003

Causes and Consequences of Globally Warm Climates in the Early Paleogene

Self Cite

View full text Add to dashboard Cite

Sediments in the expanded Anthering Section at the northwestern Tethyan margin were deposited in an abyssal environment, at the continental rise to the south of the European plate. The section contains deposits from calcareous nannoplankton Zones NP9 and NP10 and displays the global negative carbon isotope excursion (CIE) in the upper part of Zone NP9. Associated with the CIE is a strong three-fold increase in the rate of hemipelagic sedimentation. This suggests an increased input of siliciclastic suspended material into the basin, which is indicative of enhanced continental run-off at that stratigraphic level. Concurrent acmes of siliceous plankton and dinoflagellate cysts indicate that a high input of dissolved nutrients affected even open marine settings and caused eutrophication of surface waters. The associated high flux of organic carbon to the seafloor resulted in oxygen-depleted conditions and caused the total extincton of benthic faunas. However, impoverished foraminifera faunas indicate that a change of ecological conditions started shortly before the CIE.

show abstract

Section: Introductionmentioning

confidence: 99%