High-precision AMS 14C chronology for Gatecliff Shelter, Nevada

被引:42
|
作者
Kennett, Douglas J. [1 ,2 ,3 ]
Culleton, Brendan J. [1 ,2 ,3 ]
Dexter, Jaime [4 ]
Mensing, Scott A. [5 ]
Thomas, David Hurst [6 ]
机构
[1] Penn State Univ, Dept Anthropol, University Pk, PA 16802 USA
[2] Inst Energy, University Pk, PA 16802 USA
[3] Inst Environm, University Pk, PA 16802 USA
[4] Univ Oregon, Dept Anthropol, Eugene, OR 97403 USA
[5] Univ Nevada, Dept Geog, Reno, NV 89557 USA
[6] Amer Museum Nat Hist, Dept Anthropol, New York, NY 10024 USA
关键词
Bayesian; Geochronology; Radiocarbon; Summed probabilities; Great Basin; UNIVERSITY-OF-CALIFORNIA; AGE CALIBRATION CURVES; CHRONOMETRIC HYGIENE; HUMAN COPROLITES; RESERVOIR AGES; OLD-WOOD; RADIOCARBON; POPULATION; COLLAGEN; BONE;
D O I
10.1016/j.jas.2014.06.008
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
Gatecliff Shelter provides a deeply stratified record of human-environment interaction in the Desert West spanning most of the middle and late Holocene. The well-preserved 10 m-deep deposits serve as an important reference sequence for technological and subsistence change in the Great Basin. Archaeological work started at Gatecliff in 1970 and a geochronological framework was established based on 47 uncalibrated radiocarbon (C-14) dates obtained from several conventional radiometric laboratories between 1972 and 1982. These radiocarbon dates are not well accommodated within a Bayesian chronological model for these important deposits due to multiple temporal reversals and large analytical errors. This model was discarded in favor of one based on a combination of high-precision AMS C-14 dates of short-lived carbonized plant remains supplemented with existing C-14 dates culled from the original set using a Bayesian chronological model. Summed probabilities of the modeled posterior distributions of these C-14 dates (N = 24) show episodic use of the shelter as a logistic hunting camp between 6050 and 3315 cal BP, a significant hiatus in occupation between 3315 and 2145 cal BP, and more persistent use by family bands after this time. In the future, this high-precision chronology will provide the foundation for reinterpreting broader patterns of technological and subsistence change in the Intermountain West and evaluating these changes relative to high-resolution climate records. (c) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:621 / 632
页数:12
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