Publikationsdatum:
2012-11-23
Beschreibung:
In order to calibrate radiocarbon ages based on samples with a marine carbon component it is important to know the marine carbon reservoir correction or R value. This study measured the R on both known-age pre-bomb marine shells and paired marine and terrestrial samples from two regions on the west coast of South Africa: the southwestern Cape and Namaqualand. Pooling the data by region produces R values that are similar enough to use a west coast weighted mean R of 146 ± 85 14 C years to correctly calibrate marine shell or mixed marine and terrestrial 14 C ages. There are however temporal differences in R throughout the Holocene, which we compare with proxy data for upwelling and sea surface temperatures.
Print ISSN:
0959-6836
Digitale ISSN:
1477-0911
Thema:
Geographie
,
Geologie und Paläontologie
