Anomalous AMS Radiocarbon Ages for Foraminifera from High-Deposition-Rate Ocean Sediments

Radiocarbon ages on handpicked foraminifera from deep-sea cores are revealing that areas of rapid sediment accumulation are in some cases subject to hiatuses, reworking and perhaps secondary calcite deposition. We present here an extreme example of the impacts of such disturbances. The message is that if precise chronologies or meaningful benthic planktic age differences are to be obtained, then it is essential to document the reliability of radiocarbon ages by making both comparisons between coexisting species of planktonic foraminifera and detailed down-core sequences of measurements

Absolute dating · Benthic zone · Calcite · Foraminifera · Geochronology · Radiocarbon dating · Sediment · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Methane Hydrates and Related Phenomena · Geology · Oceanography · Paleontology

• Accelerator Mass Spectrometric Radiocarbon Measurements on Foraminifera Shells from Deep-Sea Cores

  Open Access•Wallace S Broecker, Mieczyslawa Klas et al.•Radiocarbon•1990

  Añadir item

• Gaining on Gutenberg

  Open Access•Austin Long•Radiocarbon•1990

  Añadir item

• Radiocarbon Dating of Shells and Foraminifera from the Skagen Core, Denmark

  Open Access•Susanne Heier-Nielsen, Keld Conradsen et al.•Radiocarbon•1995

  Añadir item

• Sea-Level Estimates during the Last Deglaciation Based on δ 18 O and Accelerator Mass Spectrometry 14 C Ages Measured in Globigerina bulloides

  Open Access•Edouard Bard, Richard G Fairbanks et al.•Quaternary Research•1989

  Añadir item

• AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean

  Open Access•Edouard Bard, Laurent Labeyrie et al.•Quaternary Research•1989

  Añadir item

• C Background Levels in An Accelerator Mass Spectrometry System

  Open Access•J S Vogel, D E Nelson et al.•Radiocarbon•1987

  Añadir item