87Sr/86Sr variability in Puerto Rico: geological complexity and the study of paleomobility

被引：13
|
作者：
Pestle, William J. [1 ]
Simonetti, Antonio [2 ]
Curet, L. Antonio [3 ]
机构：
[1] Univ Miami, Dept Anthropol, Coral Gables, FL 33124 USA
[2] Univ Notre Dame, Dept Civil & Environm Engn & Earth Sci, Notre Dame, IN 46556 USA
[3] Field Museum Nat Hist, Dept Anthropol, Chicago, IL 60605 USA
来源：
JOURNAL OF ARCHAEOLOGICAL SCIENCE | 2013年 / 40卷 / 05期
基金：
美国国家科学基金会;
关键词：
Sr-87/Sr-86; Caribbean; Puerto Rico; Paleomobility; Paleomigration; BIOLOGICALLY AVAILABLE STRONTIUM; ISOTOPE RATIOS; SPATIAL VARIATION; CHANGING SOURCES; MIGRATION; BONE; SOIL; ECOSYSTEMS; MOBILITY; CARBON;
D O I：
10.1016/j.jas.2013.01.020
中图分类号：
Q98 [人类学];
学科分类号：
030303 ;
摘要：
The temptation to use biogeochemical techniques to resolve issues of paleomigration is evident and well intentioned. Knowledge of radiogenic strontium isotope baselines in a region of interest is a sine qua non of such archaeological studies of paleomobility. Here, we present the first detailed study of baseline Sr-87/Sr-86 values for the island of Puerto Rico. The high degree of Sr-87/Sr-86 variability present in this corpus of modern Puerto Rican bedrock and terrestrial malacological samples (0.70406-0.70909) is a testament to the complex geology of that island. This diversity of Sr-87/Sr-86 values makes parsing issues of origin a difficult and highly contingent task. Given these complexities, regional studies seeking to assess paleomigration by such isotopic means should proceed with a great deal of caution. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2561 / 2569
页数：9
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