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Late Holocene Marine Radiocarbon Reservoir Correction for the Southern and Eastern Coasts of South Africa

  • Matjie L Maboya (a1) (a2), Michael E Meadows (a1) (a3), Paula J Reimer (a4) (a5), Björn C Backeberg (a6) (a7) (a8) and Torsten Haberzettl (a2)...
Abstract

The marine reservoir effect is the difference in radiocarbon (14C) between the atmosphere and the marine surface ocean. To overcome the dating errors induced, it is necessary to correct marine 14C ages for this effect. ΔR is the difference between the marine 14C age and the marine calibration curve based on an ocean-atmosphere box diffusion model, which accounts for the time delay in diffusion of carbon into the ocean from the atmosphere and biosphere. This global assessment, however, requires computation of a regional ∆R value for calibration to cater for studies based on a local scale. In this paper the marine reservoir effect is assessed for the southern and eastern coasts of South Africa using 14C dating on pre-1950 marine shells of known age. The resultant ∆R values enable a more complete understanding of the marine reservoir effect along the southern and eastern coastal zone of South Africa. 14C age determinations were conducted on 15 shell samples of known age and the results, combined with previously published values, were used to calculate regional marine reservoir correction values. The east coast has a weighted mean ∆R of 121±16 14C yr, while the south coast has a weighted mean ∆R of 187±18 14C yr.

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Corresponding author
*Corresponding author. Email: mmaboya09@alaalumni.org.
References
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Ascough, PL, Cook, G, Dugmore, AJ. 2005. Methodological approaches to determining the marine radiocarbon reservoir effect. Progress in Physical Geography 4:532547.
Ascough, PL, Cook, GT, Church, MJ, Dugmore, AJ, Arge, SV, McGovern, TH. 2006. Variability in the North Atlantic marine radiocarbon reservoir effects at c. AD 1000. The Holocene 16(1):131136.
Berkman, PA, Forman, SL. 1996. Pre-bomb radiocarbon and the reservoir correction for calcareous marine species in the Southern Ocean. Geophysical Research Letters 23(4):363366.
Carr, A, Thomas, DS, Meadows, ME, Chase, B. 2006. Late Quaternary palaeoenvironments of the winter-rainfall zone of southern Africa: palynological and sedimentological evidence from the Agulhas Plain. Palaeogeography, Palaeoclimatology, Palaeoecology 239(1):147165.
Chase, BM, Boom, A, Carr, AS, Meadows, ME, Reimer, PJ. 2013. Holocene climate change in the southernmost South Africa: rock hyrax middens record shifts in the southern westerlies. Quaternary Science Reviews 82:199205.
Dewar, G, Reimer, P, Sealy, J, Woodborne, S. 2012. Late-Holocene marine radiocarbon reservoir correction for the west coast of South Africa. The Holocene 22(12):14811489.
Dye, T. 1994. Appparent ages of marine shells: implications for archaeological dating in Hawaii. Radiocarbon 36(1):5157.
Gill, AE, Schumann, E. 1979. Topographically induced changes in the structure of an inertial coastal jet: application to the Agulhas Current. Journal of Physical Oceanography 9:975–1.
Gründlingh, ML. 1983. On the course of the Agulhas Current. South African Geographical Journal 65:4957.
Harkness, DD. 1983. The extent of natural 14C deficiency in the coastal environment of the United Kingdom. PACT: Journal of the European Study Group on Physical, Chemical and Mathematical Techniques Applied to Archaeology 8:351364.
Haberzettl, T, Baade, J, Compton, J, Daut, G, Dupont, L, Finch, J, Frenzel, P, Green, A, Hahn, A, Hebbeln, D, Helmschrot, J, Humphries, M, Kasper, T, Kirsten, K, Mäusbacher, R, Meadows, M, Meschner, S, Quick, L, Schefuß, E, Wündsch, M, Zabel, M. 2014. Paleoenvironmental investigations using a combination of terrestrial and marine sediments from South Africa – The RAIN (Regional Archives for Integrated iNvestigations) approach. Zbl. Geol. Paläont. Teil I, Jg (Heft 1):5573.
Kirsten, K, Meadows, ME. 2012. Environmental changes along the southern Cape coast, South Africa during the last millennium: evidence from diatoms. Quaternary International 1:279282.
Lutjeharms, JRE, Connell, AD. 1989. The Natal Pulse and inshore counter currents of the South African east coast. South African Journal of Science 85:533535.
Lutjeharms, JRE, Cooper, J, Roberts, M. 2000a. Upwelling at the inshore edge of the Agulhas Current. Continental Shelf Research 20(7):737761.
Lutjeharms, JRE, Valentine, HR, van Ballegooyen, RC. 2000b. The hydrography and water masses of the Natal Bight, South Africa. Continental Shelf Research 20(14):19071909.
Quick, L, Meadows, ME, Bateman, M, Kirsten, K, Mäusbacher, R, Haberzettl, T, Chase, B. 2016. Vegetation and climate dynamics during the last glacial period in the fynbos–afrotemperate forest ecotone, southern Cape, South Africa. Quaternary International 404(B):136149.
Reimer, PJ, McCormac, FG. 2002. Marine radiocarbon reservoir corrections for the Mediterranean and Aegean Seas. Radiocarbon 44(1):159166.
Reimer, PJ, Reimer, RW. 2001. A marine reservoir correction database and on-line interface. Radiocarbon 43(2A):461463.
Reimer, PJ, Bard, E, Bayliss, A. 2013. IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP. Radiocarbon 55(4):18691887.
Reinwarth, B, Franz, S, Baade, J, Haberzettl, T, Kasper, T, Daut, G, Helmschrot, J, Kirsten, K, Quick, L, Meadows, M, Mäusbacher, R. 2013. A 700-year record on the effects of climate and human impact on the southern Cape coast inferred from lake sediments of Eilandvlei, Wilderness Embayment, South Africa. Geografiska Annaler:Series A, Physical Geography 95:345360.
Russell, N, Cook, GT, Ascough, P, Barrett, JH, Dugmore, A. 2011. Species specific marine radiocarbon reservoir effect:a comparison of ΔR values between Patella vulgata (limpet) shell carbonate and Gadus morhua (Atlantic cod) bone collagen. Journal of Archaeological Science 38:10081015.
Ryan, WBF, Carbotte, SM, Coplan, J, O’Hara, SO, Melkonian, A, Arko, R, Weissel, RA, Ferrini, V, Goodwillie, A, Nitsche, F, Bonczkowski, J, Zemsky, R. 2009. Global Multi-Resolution Topography (GMRT) synthesis data set. Geochemistry. Geophysics. Geosystems 10:Q03014 doi: 10.1029/2008GC002332.
Santos, GM, Southon, JR, Druffel-Rodriguez, KC, Griffin, S, Mazon, M. 2004. Magnesium perchlorate as an alternative water trap in AMS graphite sample preparation: a report on sample preparation at KCCAMS at the University of California, Irvine. Radiocarbon 46(1):165173.
Southon, J, Kashgarian, M, Fontugne, M, Metivier, B, Yim, WW-S. 2002. Marine reservoir corrections for the Indian Ocean and Southeast Asia. Radiocarbon 44(1):67180.
Stuiver, M, Braziunas, TF. 1993. Modeling atmospheric 14C influences and 14C ages of marine samples to 10,000 BC. Radiocarbon 35(1):137189.
Stuiver, M, Pearson, GW, Braziunas, TF. 1986. Radiocarbon age calibration of marine samples back to 9000 cal yr BP. Radiocarbon 28(2B):9801021.
Stuiver, M, Reimer, PJ, Braziunas, TF. 1998. High-precision radiocarbon age calibration for terrestrial and marine samples. Radiocarbon 40(3):11271151.
Stuiver, M, Ostlund, HG. 1983. GEOSECS Indian Ocean and Mediterranean radiocarbon. Radiocarbon 25(1):129.
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355363.
Ulm, S. 2002. Marine and estuarine reservoir effects in central Queensland, Australia: determination of ∆R values. Geoarchaeology 17:319348.
Vogel, JS, Southon, JR, Nelson, DE, Brown, TA. 1984. Performance of catalytically condensed carbon for use in accelerator mass-spectrometry. Nuclear Instruments and Methods in Physics Research B 5(2):289293.
Wündsch, M, Haberzettl, T, Meadows, ME, Kirsten, KL, Kasper, T, Baade, J, Daut, G, Stoner, JS, Mäusbacher, R. 2016 . The impact of changing reservoir effects on the 14C chronology of a Holocene sediment record from South Africa. Quaternary Geochronology 36:148160.
Yoneda, M, Uno, H, Shibata, Y, Suzuki, R, Kumamoto, Y, Yoshida, K, Sasaki, T, Suzuki, A, Kawahata, H. 2000. Pre-bomb marine reservoir ages in the western North Pacific: preliminary result on Kyoto University collection. Nuclear Instruments and Methods in Physical Research B172:377381.
Zhao, Q, Dupont, L, Schefuss, E, Hahn, A, Meadows, ME, Wefer, G. 2016. Holocene vegetation and climate variability between winter and summer rainfall zones of South Africa. The Holocene 26:843857.
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Radiocarbon
  • ISSN: 0033-8222
  • EISSN: 1945-5755
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