模拟和监测海上挖沙过程中的水下史前遗址及其对南加州早全新世海岸占领研究的意义

IF 1.4 3区 地球科学 0 ARCHAEOLOGY
John A. Hildebrand, Andrew L. York
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引用次数: 0

摘要

南加州海岸的沙滩疏浚工程为更好地了解全新世早期沉积物的地层环境和潜在的近海埋藏考古材料提供了数据。地球物理数据、岩心沉积物和无脊椎动物化石使得在圣地亚哥县附近的淹没河谷内的六个借点建立了模型。在疏浚作业期间对这些特定地点的模型进行了测试,并对疏浚废渣进行了考古材料监测。其中两个遗址出土的石碗与该地区之前的海上考古调查中发现的石碗一致。然而,这些文物被确定来自近岸和泻湖沉积物,不适合直接占领,这引发了对石碗功能和导致其沉积过程的质疑。提出的相互矛盾的假设是,这些碗起源于位于泻湖附近的定居点,但在海侵期间被侵蚀并重新沉积到泻湖中,或者它们是船上或泻湖内浅水区使用的捕鱼工具包的一部分。该项目说明了商业开发项目在获取水下考古资源信息方面的潜力,以及面临的挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Modeling and monitoring submerged prehistoric sites during offshore sand dredging and implications for the study of Early Holocene Coastal Occupation of Southern California

Modeling and monitoring submerged prehistoric sites during offshore sand dredging and implications for the study of Early Holocene Coastal Occupation of Southern California

Beach sand dredging projects off the coast of Southern California provide data for improved understanding of the stratigraphic setting for early Holocene sediments and the potential for offshore buried archaeological materials. Geophysical data, core sediments, and invertebrate fossils allow models to be developed for six borrow sites within drown river valleys off San Diego County. These site-specific models were tested during dredging operations, and the dredge spoil was monitored for archaeological materials. Two of the borrow sites yielded stone bowls consistent with those found in previous offshore archaeological investigations in this region. These artifacts, however, were determined to come from nearshore and lagoonal sediments, not appropriate for direct occupation, raising questions about both the function of stone bowls and the process that resulted in their deposition. The competing hypotheses presented are that these bowls originated in settlements located adjacent to the lagoons, but were eroded and redeposited into the lagoon during transgression, or that they were part of a fishing toolkit used from boats or in shallow waters within the lagoon. This project illustrates the potential for commercial development projects to yield information on submerged archaeological resources, as well as the challenges.

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来源期刊
Geoarchaeology-An International Journal
Geoarchaeology-An International Journal 地学-地球科学综合
CiteScore
3.60
自引率
5.90%
发文量
51
审稿时长
>12 weeks
期刊介绍: Geoarchaeology is an interdisciplinary journal published six times per year (in January, March, May, July, September and November). It presents the results of original research at the methodological and theoretical interface between archaeology and the geosciences and includes within its scope: interdisciplinary work focusing on understanding archaeological sites, their environmental context, and particularly site formation processes and how the analysis of sedimentary records can enhance our understanding of human activity in Quaternary environments. Manuscripts should examine the interrelationship between archaeology and the various disciplines within Quaternary science and the Earth Sciences more generally, including, for example: geology, geography, geomorphology, pedology, climatology, oceanography, geochemistry, geochronology, and geophysics. We also welcome papers that deal with the biological record of past human activity through the analysis of faunal and botanical remains and palaeoecological reconstructions that shed light on past human-environment interactions. The journal also welcomes manuscripts concerning the examination and geological context of human fossil remains as well as papers that employ analytical techniques to advance understanding of the composition and origin or material culture such as, for example, ceramics, metals, lithics, building stones, plasters, and cements. Such composition and provenance studies should be strongly grounded in their geological context through, for example, the systematic analysis of potential source materials.
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