Marine Radiocarbon Reservoir Ages in Scottish Coastal and Fjordic Waters

Cage, Alix G.; Heinemeier, Jan; Austin, William E. N.

doi:10.1017/s0033822200035372

Cited by 37 publications

(19 citation statements)

References 48 publications

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“…marine) carbon reservoir. In their discussion of pre-bomb marine radiocarbon reservoir ages, Cage et al (2006) clarify that R(t) is determined as the difference between a measured marine 14 C age, 14 C M (t), obtained from shell material, and the contemporaneous atmospheric 14 C age, 14 C T (t), derived from one of the terrestrial calibration curves e.g. IntCal04 or IntCal09 (Reimer et al, 2004(Reimer et al, , 2009…”

Section: North Atlantic Marine Radiocarbon Reservoir Age Calculationmentioning

confidence: 99%

North Atlantic reservoir ages linked to high Younger Dryas atmospheric radiocarbon concentrations

Austin¹,

Telford²,

Ninnemann³

et al. 2011

Global and Planetary Change

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Section: North Atlantic Marine Radiocarbon Reservoir Age Calculationmentioning

confidence: 99%

North Atlantic reservoir ages linked to high Younger Dryas atmospheric radiocarbon concentrations

Austin¹,

Telford²,

Ninnemann³

et al. 2011

Global and Planetary Change

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“…Hogg and Higham 1998;Dumond and Griffin 2002;Ascough et al 2005;Cage et al 2006;Gillespie et al 2009). Shell material survives better in most depositional settings than organic matter, or even fish bones.…”

Section: R Fernandes Et Almentioning

confidence: 99%

Mussels with Meat: Bivalve Tissue-Shell Radiocarbon Age Differences and Archaeological Implications

et al. 2012

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ABSTRACT. Local reservoir ages are often estimated from the difference between the radiocarbon ages of aquatic material and associated terrestrial samples for which no reservoir effect is expected. Frequently, the selected aquatic material consists of bivalve shells that are typically well preserved in the archaeological record. For instance, large shell middens attest to the importance of mussel consumption at both coastal and inland sites. However, different physiological mechanisms associated with tissue and shell growth may result in differences in reservoir effects between the surviving component (shell) and the component relevant to dietary reservoir effects in consumers (tissue). The current study examines bivalve tissue-shell age differences both from freshwater and marine contexts close to archaeological sites where human consumption of mollusks has been attested. Results exhibited significant ,4 C age differences between bivalve tissue and shell in a freshwater context. In a marine context, no significant bivalve tissue-shell age differences were observed. The results also showed that riverine and lacustrine shells show large and variable freshwater reservoir effects. The results have important implications for establishing local reservoir effects especially in a freshwater environment. For good a priori knowledge of expected 14 C differences in organic and inorganic water, carbon is thus necessary. Furthermore, the high variability in freshwater shell 14 C ages implies the need for representative sampling from the archaeological record.

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“…The influx of terrestrial organic carbon and dissolved 14 C free fossil carbonates may significantly contribute to variations in the marine reservoir age that are offset relative to the global ocean, particularly in areas where water exchange with the open ocean is limited (e.g. fjords and estuaries) (Heier‐Nielsen et al . 1995b; Hedenström & Possnert 2001; Cage et al .…”

mentioning

confidence: 99%

Holocene temporal and spatial variation in the radiocarbon reservoir age of three Danish fjords

Olsen¹,

Rasmussen²,

Heinemeier³

2009

Boreas

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J. 2009 (August): Holocene temporal and spatial variation in the radiocarbon reservoir age of three Danish fjords.Holocene temporal and spatial reservoir age variations have been investigated in three Danish fjords (Horsens Fjord, Tempelkrog in Isefjord and Skaelskr Nor) by 14 C dating paired samples of terrestrial plant material and marine molluscs in sediment cores. The local reservoir age offsets at all three sites show significant temporal and local variations, with DR(t) values ranging from À 425 to 620 yr. The DR(t) values for Horsens Fjord range from À 425 to 0 yr, for Tempelkrog from À 230 to 360 yr and for Skaelskr Nor from 30 to 620 yr. The differences are best explained by differences in local hydrographic configuration, catchment characteristics and connection with the inner Danish seas. The observed temporal DR(t) variations are not synchronous, which is probably due to the overriding role played by numerous local factors affecting the DR(t) values. Based on the reservoir data from Horsens Fjord and Tempelkrog, it is suggested as a working hypothesis that the DR value for Kattegat prior to 4500 cal. yr BP was negative, i.e. between À 130 and À 200 yr. The temporal and local variations in the reservoir age underline the problems and uncertainties connected with radiocarbon-dating fossil human skeletons with marine diets. Overall, our data show that reservoir ages in Danish fjords and estuaries are both site-specific and time-specific, implying that modern reservoir ages cannot simply be applied back in time. This conclusion may also be valid in the case of fjords and estuaries in large parts of the Baltic too.

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Marine Radiocarbon Reservoir Ages in Scottish Coastal and Fjordic Waters

Cited by 37 publications

References 48 publications

North Atlantic reservoir ages linked to high Younger Dryas atmospheric radiocarbon concentrations

North Atlantic reservoir ages linked to high Younger Dryas atmospheric radiocarbon concentrations

Mussels with Meat: Bivalve Tissue-Shell Radiocarbon Age Differences and Archaeological Implications

Holocene temporal and spatial variation in the radiocarbon reservoir age of three Danish fjords

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