Contrasting paired benthic and planktonic foraminifera radiocarbon ages from Bermuda Rise ODP Site 1063 during Heinrich Stadials 1 and 2

Bibliographic Data

ID9245463
AuthorsJörg Lippold (0000-0003-1976-5065), Jens Fohlmeister (0009-0002-1654-3715), Lukas Wacker (0000-0002-8215-2678), Michal Kucera (0000-0002-7817-9018), Bernd Kromer (0000-0003-1058-4436), Jens Grützner (0000-0001-5445-2393)
Year2024
Volume66
Issue4
Pages816-823
Publication date2024-08-01
Open AccessYes
TypeARTICLE
VenueRadiocarbon (JOURNAL)
Journal identifiersISSN: 0033-8222 • E-ISSN: 1945-5755
PublisherCambridge University Press (CUP) (PUBLISHER)
DOI10.1017/rdc.2024.78
OpenAlexW4403134402
LanguageEN
References cited33

We report 27 planktonic and 21 benthic radiocarbon ages from the subtropical marine sediment core ODP Site 1063 (Bermuda Rise) for the time range between 30 and 14 ka before present. Despite low abundances of benthic specimens, it was possible to measure radiocarbon ages down to ∼10 μg carbon using a MICADAS and the gas ion source developed at ETH Zurich. Based on a tentative radiocarbon–independent age-model we found that the radiocarbon reservoir of the bottom water varied moderately relative to the analytical and age-model related uncertainties throughout the examined time-period, but larger differences in the radiocarbon reservoir appear to have affected the upper ocean layer. In particular, radiocarbon levels around Heinrich Stadial 2 reveal surface radiocarbon content similar to that of the atmosphere, while during Heinrich Stadial 1 surface waters were significantly depleted in 14 C

Absolute dating · Archaeology · Benthic zone · Foraminifera · Geochronology · Geography · Holocene · Plankton · Radiocarbon dating · Stadial · Archaeology and ancient environmental studies · Geology and Paleoclimatology Research · Pleistocene-Era Hominins and Archaeology · Geology · Oceanography · Paleontology

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