Holocene Environmental Change at Wonderwerk Cave, South Africa: Insights from Stable Light Isotopes in Ostrich Eggshell
Holocene Environmental Change at Wonderwerk Cave, South Africa: Insights from Stable Light Isotopes in Ostrich Eggshell
复制标题
南非 Wonderwerk 洞穴全新世环境变化:来自鸵鸟蛋壳中稳定轻同位素的见解
DOI:
10.1007/s10437-015-9202-y
复制
发表时间:
2015
影响因子:
1.6
通讯作者:
Lee-Thorp J
中科院分区:
文献类型:
--
作者:
Lee-Thorp J
Sparse records and discontinuous and/or poor chronologically resolved data hinder construction of reliable palaeoenvironmental sequences for the interior of South Africa. Wonderwerk Cave occupies a central position in the interior where the Kalahari Thornveld/dry woodland vegetation and generally arid conditions are expected to be sensitive to subtle past climate perturbations, and evidence from this site has been key to forming views on environmental change in the interior. A compilation of existing data including principal component analysis of pollen suggested broad trends, ranging from variably arid and open in the early Holocene to moister conditions from about 7500 to 5000 years, followed by aridity thereafter. In an effort to better establish the nature and timing of shifts from the Late Pleistocene sequence onwards, we analyse carbon and oxygen isotope ratios in a robust sample of ostrich eggshell from Wonderwerk Cave. The resulting data are then placed within a temporal framework established by Bayesian modelling of existing radiocarbon dates and compared against shifts in the Wonderwerk cultural sequence. Several shifts and trends in aridity include an arid to moist shift in layer 4b near 6000 years, coincident with a cultural shift within the Wilton assemblage, and thereafter an aridification trend culminating at about 2000 years with the appearance of the ceramic LSA.
登录
查看更多内容
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
P. Beaumont
通讯作者:
P. Beaumont
DOI:
--
发表时间:
1966
期刊:
影响因子:
--
作者:
E. G. Sauer;E. M. Sauer
通讯作者:
E. M. Sauer
影响因子:
2.3
作者:
J. Lee;P. Beaumont
通讯作者:
P. Beaumont
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
L. Scott;M. Steenkamp;P. Beaumont
通讯作者:
P. Beaumont
影响因子:
8.3
作者:
Hogg, Alan G.;Hua, Quan;Zimmerman, Susan R. H.
通讯作者:
Zimmerman, Susan R. H.