首页> 外文期刊>Journal of Archaeological Science >Integrating geoarchaeology and magnetic susceptibility at three shell mounds: a pilot study from Mornington Island, Gulf of Carpentaria, Australia
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Integrating geoarchaeology and magnetic susceptibility at three shell mounds: a pilot study from Mornington Island, Gulf of Carpentaria, Australia

机译:在三个贝壳丘中整合了地质考古学和磁化率:澳大利亚卡彭塔里亚湾莫宁顿岛的一项初步研究

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摘要

In coastal areas of the globe, open shell matrix sites are commonly used to establish regional chronologies of human occupation and identify patterns of cultural change, particularly for the Holocene, postsea- level stabilisation period. Despite this, many basic sedimentary analyses that are routinely applied to rockshelter deposits (e.g. geophysical characterisation, particle size etc) are rarely applied to these sites. Magnetic susceptibility, occasionally used in rockshelters, has never been used to investigate shell matrix sites in Australia, despite several international studies identifying its efficacy for other types of open sites. This paper reports a pilot project applying a range of conventional sedimentary and archaeological analyses, as well as magnetic susceptibility at three anthropogenic shell mounds on Mornington Island, Gulf of Carpentaria, Australia. Results are compared to, firstly, assess site integrity and, secondly, to ascertain whether magnetic signatures are related to cultural or natural site formation processes. The results establish that the mounds were repeatedly visited, despite the archaeological evidence, including radiocarbon ages, suggesting effectively 'instantaneous' deposition. This has important implications for studies of other shell mounds where the limitations of radiocarbon dating precision may also mask multiple deposition events.
机译:在全球沿海地区,通常使用开壳矩阵站点来建立人类占领的区域年表,并确定文化变化的模式,特别是在全新世海平面稳定时期。尽管如此,许多常规应用于岩棚沉积物的基本沉积分析(例如地球物理特征,粒径等)却很少应用于这些地点。尽管有几项国际研究确定其对其他类型露天场所的功效,但磁化率偶尔用于岩棚,但从未用于调查澳大利亚的壳基质场所。本文报告了一个试点项目,该项目应用了一系列常规的沉积和考古分析,以及澳大利亚卡庞塔利亚湾莫宁顿岛的三个人为壳丘的磁化率。将结果进行比较,首先,评估场地的完整性,其次,确定磁性签名是否与文化或自然场地形成过程有关。结果表明,尽管有考古证据,包括放射性碳年代,但这些土丘还是被反复探访,表明有效的“瞬时”沉积。这对其他壳丘的研究具有重要意义,因为放射性碳测年精度的局限性也可能掩盖了多次沉积事件。

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