Radiocarbon Age Offsets in Different-Sized Carbonate Components of Deep-Sea Sediments

We compared accelerator mass spectrometry (AMS) 14C ages of large (>150 μm) pelagic foraminifera with radiometric bulk carbonate 14C ages in two northeastern Atlantic cores. The foraminiferal ages are consistently older than those of the bulk sediment (by + 0.76 ka in Core 11881 and by + 1.1 ka i...

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Veröffentlicht in:	Radiocarbon 1995, Vol.37 (2), p.91-101
Hauptverfasser:	Thomson, John, Cook, G. T., Anderson, Robert, MacKenzie, A. B., Harkness, D. D., McCave, I.N.
Format:	Artikel
Sprache:	eng
Schlagworte:	A. 14C in Carbonates, Sediments, Shells, Tephra and Other Environmental Media Excavation and methods I. 14C in the Reconstruction of Past Environments Laboratory methods Methodology and general studies Physical and chemical analysis Prehistory and protohistory
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Zusammenfassung:	We compared accelerator mass spectrometry (AMS) 14C ages of large (>150 μm) pelagic foraminifera with radiometric bulk carbonate 14C ages in two northeastern Atlantic cores. The foraminiferal ages are consistently older than those of the bulk sediment (by + 0.76 ka in Core 11881 and by + 1.1 ka in Core 11886), whereas corresponding fine (
ISSN:	0033-8222 1945-5755
DOI:	10.1017/S0033822200030526