Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quaint.2015.11.079 |
Using archaeological shell middens as a proxy for past local coastal upwelling in northern Chile | |
Latorre, Claudio1,2; De Pol-Holz, Ricardo3; Carter, Chris4; Santoro, Calogero M.5 | |
通讯作者 | Santoro, Calogero M. |
来源期刊 | QUATERNARY INTERNATIONAL
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ISSN | 1040-6182 |
EISSN | 1873-4553 |
出版年 | 2017 |
卷号 | 427页码:128-136 |
英文摘要 | Shell middens, large heaps of refuse materials that are often interspersed with burials, hearths and other cultural features, provide important data regarding the lifestyles of past coastal and maritime dwellers. Despite the abundance of organic materials, radiocarbon ages from shell middens can be a challenge to interpret because marine shells are depleted in radiocarbon with respect to their contemporaneous atmosphere, known as the "reservoir effect" (R). This issue is particularly problematic in regions like the coastal Atacama Desert where the upwelling of subsurface radiocarbon-depleted waters creates a shell "local" reservoir effect (Delta R) with a time-variable intrinsic uncertainty. Here we review and discuss how the dating of diverse materials from these deposits, including the shells themselves, can reveal large shifts between the terrestrial (atmospheric) and marine carbon cycles. Furthermore, a chronology of such shifts can be used as a proxy of upwelling intensity and to help establish the duration of strong versus weak local upwelling episodes. To test and evaluate these ideas, we present a chronology of R and Delta R variations from a 2-m shell midden sequence from Caleta Vitor in northern Chile that spans the middle Holocene, which remains underrepresented by regional Delta R values. The similar to 2000 y sequence of Caleta Vitor, located onshore from a major upwelling center, displays dramatic shifts in radiocarbon reservoir effects which we hypothesize are linked to strong changes in the intensity of local upwelling. Further replication of such archaeomalacological records will be key for not only solving methodological problems regarding the dating of coastal sites but can provide further insights into the evolving terrestrial and marine carbon cycles and how these relate to past climate change. (C) 2015 Elsevier Ltd and INQUA. All rights reserved. |
英文关键词 | Shell middens Coastal upwelling Marine radiocarbon reservoir effect Atacama Desert Northern Chile |
类型 | Article |
语种 | 英语 |
国家 | Chile ; Australia |
收录类别 | SCI-E ; SSCI ; AHCI |
WOS记录号 | WOS:000396505400012 |
WOS关键词 | RESERVOIR AGE VARIATION ; LATE HOLOCENE EVIDENCE ; SOUTH-CENTRAL ANDES ; ATACAMA DESERT ; CALETA VITOR ; HUACA PRIETA ; OLD-WOOD ; EL-NINO ; MARINE ; PERU |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201778 |
作者单位 | 1.Pontificia Univ Catolica Chile, Dept Ecol, Alameda 340, Santiago, Chile; 2.IEB, Casilla 653, Santiago, Chile; 3.Univ Magallanes, GAIA Antartica, Punta Arenas, Chile; 4.Australian Natl Univ, Sch Archaeol & Anthropol, Canberra, ACT 0200, Australia; 5.Univ Tarapaca, Inst Alta Invest, Lab Arqueol & Peleoambiente, Antofagasta 1520, Arica, Chile |
推荐引用方式 GB/T 7714 | Latorre, Claudio,De Pol-Holz, Ricardo,Carter, Chris,et al. Using archaeological shell middens as a proxy for past local coastal upwelling in northern Chile[J],2017,427:128-136. |
APA | Latorre, Claudio,De Pol-Holz, Ricardo,Carter, Chris,&Santoro, Calogero M..(2017).Using archaeological shell middens as a proxy for past local coastal upwelling in northern Chile.QUATERNARY INTERNATIONAL,427,128-136. |
MLA | Latorre, Claudio,et al."Using archaeological shell middens as a proxy for past local coastal upwelling in northern Chile".QUATERNARY INTERNATIONAL 427(2017):128-136. |
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