DOI: 10.1016/j.quascirev.2014.01.012
Scopus记录号: 2-s2.0-84894044648
论文题名: Fish otolith geochemistry, environmental conditions and human occupation at Lake Mungo, Australia
作者: Long K. ; Stern N. ; Williams I.S. ; Kinsley L. ; Wood R. ; Sporcic K. ; Smith T. ; Fallon S. ; Kokkonen H. ; Moffat I. ; Grün R.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 88 起始页码: 82
结束页码: 95
语种: 英语
英文关键词: Australians
; Fishing strategies of prehistoric
; Otoliths
; Oxygen isotope analysis
; Radiocarbon dating
英文摘要: Fish otoliths from the Willandra Lakes Region World Heritage Area (south-western New South Wales, Australia) have been analysed for oxygen isotopes and trace elements using in situ techniques, and dated by radiocarbon. The study focused on the lunettes of Lake Mungo, an overflow lake that only filled during flooding events and emptied by evaporation, and Lake Mulurulu, which was part of the running Willandra Creek system. Samples were collected from two different contexts: from hearths directly associated with human activity, and isolated surface finds. AMS radiocarbon dating constrains the human activity documented by five different hearths to a time span of less than 240 years around 19,350cal. BP. These hearths were constructed in aeolian sediments with alternating clay and sand layers, indicative of fluctuating lake levels and occasional drying out. The geochemistry of the otoliths confirms this scenario, with shifts in Sr/Ca and Ba/Ca marking the entry of the fish into Lake Mungo several years before their death, and a subsequent increase in the δ18O by ~4‰ indicating increasing evaporation of the lake. During sustained lake-full conditions there are considerably fewer traces of human presence. It seems that the evaporating Lake Mungo attracted people to harvest fish that might have become sluggish through oxygen starvation in an increasingly saline water body (easy prey hypothesis). In contrast, surface finds have a much wider range in radiocarbon age as a result of reworking, and do not necessarily indicate evaporative conditions, as shown by comparison with otoliths from upstream Lake Mulurulu. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60364
Appears in Collections: 过去全球变化的重建
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作者单位: Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia; Department of Archaeology, La Trobe University, Melbourne, VIC 3086, Australia; Department of Archaeology, Australian National University, Canberra, ACT 0200, Australia; Geoscience Australia, PO Box 378, Canberra, ACT 2601, Australia
Recommended Citation:
Long K.,Stern N.,Williams I.S.,et al. Fish otolith geochemistry, environmental conditions and human occupation at Lake Mungo, Australia[J]. Quaternary Science Reviews,2014-01-01,88