在莫哈维文物和地形上岩石漆的阴离子比率和加速器放射性碳测年
Science (New York, N.Y.)
|February 21, 1986
概括
这项研究介绍了岩石漆的第一个加速器放射性碳测年法,校准了考古文物的阴离子比测年法. 结果表明,在普莱斯托时代晚期,莫哈维沙漠可能存在人类存在.
科学领域:
- 地质时间学 (Geochronology)
- 考古学的考古学
- 地质化学 地质化学
背景情况:
- 岩漆测年提供了一种新的方法来确定文物年龄.
- 以前的方法缺乏精确的校准,用于干旱环境中的阴离子比测年.
- 了解早期人类在莫哈维沙漠的存在,需要可靠的约会技术.
研究的目的:
- 用加速器放射性碳和/方法实证校准岩石漆的阴离子比测年.
- 应用校准的阴离子比方法来测定摩哈韦沙漠的考古文物日期.
- 调查人类在莫哈维沙漠的居住时间,特别是在普莱斯托纪晚期.
主要方法:
- 岩石漆的加速器放射性碳测年.
- 相关的岩流的/测年.
- 常规的放射性碳测年雨期湖泊海岸线.
- 岩石涂料K(+) + Ca(2+) / Ti(4+) 比例与已确定的年龄相对应的实证校准.
主要成果:
- 在莫哈维沙漠,岩石漆阴离子比约会的成功校准已经实现.
- 在167件考古文物中,采用了离子比测年法.
- 实验性阴离子比约会表明,在普莱斯托纪晚期,可能有人在莫哈维沙漠居住.
结论:
- 岩石漆的离子比测年是一种可行的,尽管是实验性的,考古学测年方法.
- 这些发现为早期人类在加利福尼亚东部存在的时间表提供了新的见解.
- 需要进一步的研究来完善离子比测年技术并扩大其应用.
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