DOI: 10.1016/j.palaeo.2016.11.038
论文题名: Calibrating the element composition of Donax deltoides shells as a palaeo-salinity proxy
作者: Izzo C. ; Manetti D. ; Doubleday Z.A. ; Gillanders B.M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 484 起始页码: 89
结束页码: 96
语种: 英语
英文关键词: Australia
; Barium
; Drought
; Goolwa cockle
; LA-ICPMS
; Pipi
英文摘要: Bivalve shell chemistries provide valuable insights into past environments if relationships between shell chemistry and environmental conditions are known. This study assessed the suitability of Goolwa cockle (Donax deltoides) shell element composition as an environmental proxy for southern Australia, a region lacking high-resolution environmental records. Cockles were collected along an environmental gradient and the element composition of corresponding water and shell samples were quantified using a combination of ICP-AES and ICP-MS (for water samples), and LA-ICP-MS (for shells). Of the elements analysed, Ba/Ca, Li/Ca and Mg/Ca in shells reflected ambient water chemistries. Shell Ba/Ca concentrations showed a significant, negative relationship with recorded salinities, and a positive (non-significant) trend was observed between Mg/Ca and water temperature. Further assessment of environmental and biological controls on element incorporation are required; however, Ba/Ca in D. deltoides shells appears a suitable palaeo-salinity tool and has the potential to provide an easily accessible and valuable proxy to gain insights into past environmental conditions over extensive time scales. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67762
Appears in Collections: 过去全球变化的重建
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作者单位: Southern Seas Ecology Laboratories, The Environment Institute, School of Biological Sciences, The University of AdelaideSA, Australia
Recommended Citation:
Izzo C.,Manetti D.,Doubleday Z.A.,et al. Calibrating the element composition of Donax deltoides shells as a palaeo-salinity proxy[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,484