Geoarchaeology and Coastal Morphodynamics of Harbor Key (8MA15): Indigenous Persistence at a Partially Inundated Native Shell Mound Complex in Tampa Bay, Florida

Geoarchaeology and Coastal Morphodynamics of Harbor Key (8MA15): Indigenous Persistence at a Partially Inundated Native Shell Mound Complex in Tampa Bay, Florida
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Harbour Key 的地质考古学和海岸形态动力学(8MA15):佛罗里达州坦帕湾部分被淹没的本土贝丘复合体的土著居民的持续存在

DOI:
10.1017/aaq.2023.45
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发表时间:
2023
期刊:
影响因子:
2.8
通讯作者:
Thompson, Victor D.
Thompson, Victor D.
中科院分区:
人文科学1区
文献类型:
--
作者:
Jackson, Kendal;Pluckhahn, Thomas J.;Rogers, Jaime A.;Wang, Ping;Thompson, Victor D.

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应用海岸地质考古学的方法,我们综合地层,沉积,软体动物考古学,和放射性数据集最近的挖掘和沉积物取芯在港口的关键(8 MA 15)-壳terraformed本土土墩复杂的坦帕湾,中央半岛的墨西哥湾沿岸的佛罗里达。我们对该遗址的时间顺序进行了重大修改,并将其置于该地区相对较少的早期公民仪式中心之列。亚土墩背景的分析表明,早期的第一个千年土墩中心是建在一个平台上的沙子和易地文化壳存款,在古代风暴登陆约2000 BP的返工。我们在一个海景尺度的地层和古环境框架内的海港关键,并表明,shellworks包括一个人工屏障,保护背风河口盆地(和生产性近岸湿地)的高能量条件下的开放海湾和墨西哥湾的涌浪。沉积和考古记录证明了该地区沿海过程和土著贝壳地形形成之间的形态动力学相互作用的长期历史,并表明坦帕湾早期的第一个千年丘建筑与对先前贝壳厂的认识和再利用以及对文化海景的持续管理有关。
Applying a coastal-geoarchaeological approach, we synthesize stratigraphic, sedimentological, mollusk-zooarchaeological, and radiometric datasets from recent excavations and sediment coring at Harbor Key (8MA15)—a shell-terraformed Native mound complex within Tampa Bay, on the central peninsular Gulf Coast of Florida. We significantly revise the chronological understanding of the site and place it among the relatively few early civic-ceremonial centers in the region. Analyses of submound contexts revealed that the early first millennium mound center was constructed atop a platform of sand and ex situ cultural shell deposits that were reworked during ancient storm landfalls around 2000 BP. We situate Harbor Key within a seascape-scale stratigraphic and paleoenvironmental framework and show that the shellworks comprise an artificial barrier protecting the leeward estuary basin (and productive inshore wetlands) from high-energy conditions of the open bay and swells from the Gulf of Mexico. The sedimentary and archaeological records attest to the long-term history of morphodynamic interaction between coastal processes and Indigenous shell terraforming in the region and suggest that early first millennium mound building in Tampa Bay was tied to the recognition and reuse of antecedent shellworks and the persistent management of encompassing cultural seascapes.
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