Late Pleistocene-Holocene productivity record of benthic foraminifera from the Iceland Plateau (Core PS1246-2).

Costello, O. P. and Bauch, H. A. (1997) Late Pleistocene-Holocene productivity record of benthic foraminifera from the Iceland Plateau (Core PS1246-2). In: Contributions to the Micropaleontology and Paleoceanography of the Northern North Atlantic. , ed. by Hass, H. C. and Kaminski, M. A.. Grzybowski Foundation Special Publication, 5 . Grzybowski Foundation, Krakow, pp. 141-148.

[img]
Preview
Text
Costello+Bauch 1997 L Pleistocene-Holocene.pdf - Reprinted Version

Download (496Kb) | Preview

Abstract

Benthic foraminiferal assemblage patterns in Core PS 1246-2 from the Iceland Plateau are
examined as they relate to annual productivity and seasonal productivity changes during the
Late Pleistocene glacial (23,000-11,000 yrs B.P.), Younger Dryas cool period (11,000-10,000 yrs B.P.) and Holocene (10,000-2,900 yrs B.P.). Abundance fluctuations of Cibicidoides wuellerstorji, a suspension-feeder, are used as the proxy for annual productivity, while fluctuations of the phytodetritus-exploiting species Epistoininclln r ~ i p r a E, ponides tlinzid~illisa nd GloDocossidlrliiia strbglobosa are used as the indicators of seasonal productivity.
These records show seasonal productivity began to increase around 22,500 yrs B.P. and
experienced three subsequent peaks in the glacial, while annual productivity increased around 16,000 yrs B.P. and shows only one peak in the glacial. The Younger Dryas shows a decrease in
both seasonal and annual productivity records. Seasonal productivity in the early Holocene is
much higher than during the glacial, yet appears more extreme. The Holocene record of annualproductivity continues to show a strong general increase in intensity.

Document Type: Book chapter
Keywords: Late Pleistocene-Holocene; productivity record; Iceland Plateau; Core PS1246-2
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Projects: SFB313
Date Deposited: 16 Feb 2016 13:06
Last Modified: 16 Feb 2016 13:06
URI: http://oceanrep.geomar.de/id/eprint/31206

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...