Determining the source of felsitic lithic material in southeastern New England using neodymium isotope ratios
Determining the source of felsitic lithic material in southeastern New England using neodymium isotope ratios
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DOI：
10.1002/(sici)1520-6548(200001)15:1
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发表时间：
2000
影响因子：
1.7
通讯作者：
M. Brady;D. Coleman
中科院分区：
文献类型：
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作者：
M. Brady;D. Coleman
我们介绍了使用Nd同位素作为一种高精度的技术，可用于与视觉，岩相学和微量元素分析源不明显的长石debitage。这种方法允许从新英格兰东南部采购借记，包括以前不能限制在一个来源的样本。结合微量元素数据，同位素数据还提供了在火山复合体内的特定采石场，甚至在采石场内的特定灰流中扣除的可能性。如此精确地确定借记的起源对于理解新英格兰东南部的收购、贸易和交换网络非常重要，在那里，单个火山复合体（林恩-马塔潘）内采石场之间的距离大于不同火山复合体（林恩-马塔潘、蓝山和瓦姆苏塔）之间的距离。马塔潘采石场的债务来源表明，波士顿盆地西北部的中石器时代人口主要从盆地南部的来源获得非本地的石器材料。© 2000 John Wiley & Sons，Inc.
We introduce the use of Nd isotopes as a high-precision technique that can be used in conjunction with visual, petrographic, and trace element analyses to source indistinct felsitic debitage. This approach allows sourcing of debitage from southeastern New England, including samples that previously could not be constrained to one source. Combined with trace element data, isotopic data also provide the possibility of sourcing debitage to a particular quarry site within a volcanic complex, and even to a particular ash flow within a quarry site. Determining the origin of debitage so precisely is important for understanding acquisition, trade, and exchange networks in southeastern New England, where distances separating quarry sites within an individual volcanic complex (Lynn–Mattapan) are greater than distances between different volcanic complexes (Lynn–Mattapan, Blue Hill, and Wamsutta). The sourcing of debitage to Mattapan quarries suggests that Middle Archaic populations in the northwest part of the Boston Basin obtained nonlocal lithic material primarily from sources south of the basin. © 2000 John Wiley & Sons, Inc.