Short contribution: Marine erosion and archaeological landscapes: A case study of stone forts at cliff‐top locations in the Aran Islands, Ireland
Short contribution: Marine erosion and archaeological landscapes: A case study of stone forts at cliff‐top locations in the Aran Islands, Ireland
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简短贡献：海洋侵蚀和考古景观：爱尔兰阿兰群岛悬崖顶石堡的案例研究
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发表时间：
2004
期刊：
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通讯作者：
D. Williams
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作者：
D. Williams
在爱尔兰阿兰群岛的垂直海岸悬崖边缘，有两座大型的石头堡垒。其中一个，Dun Aonghusa，包含了在城墙主要建设阶段之前的占领证据，并广泛跨越了公元前3300-2800年的时间间隔。另一个堡垒，Dun Duchathair，被称为海角堡垒，因为它的剩余城墙穿过悬崖边缘的小海角的颈。对爱尔兰这一地区过去海洋侵蚀率的估计，既可以通过与其他地区的研究进行类比，也可以与目前的海洋侵蚀率进行比较。提出了一个每年约0.4米海岸退缩侵蚀率的工作模型。把这个速率应用到阿兰群岛的悬崖上，可以证明，假设这些堡垒的建造日期大约是公元前2500年，它们最初建在离海岸线相当远的地方。因此敦杜查泰尔不是一个海岬要塞。因此，敦昂胡萨最早有记载的居住地点可以追溯到青铜器时代中期，是在内陆，而不是在大西洋边缘70米高的悬崖上。©2004 Wiley期刊公司
Two massively constructed stone forts exist on the edge of vertical coastal cliffs on the Aran Islands, Ireland. One of these, Dun Aonghusa, contains evidence of occupation that predates the main construction phases of the walls and broadly spans a time interval of 3300–2800 yr B.P. The other fort, Dun Duchathair, has been termed a promontory fort because its remaining wall crosses the neck of a small promontory marginal to the cliffs. Estimates of past rates of marine erosion in this part of Ireland may be made both by analogy with studies in other areas and comparison with present day rates of marine erosion. A working model for erosion rates of approximately 0.4 m of coastal recession per annum is suggested. By applying this rate to the cliffs of the Aran Islands, it can be shown that, assuming a construction date of approximately 2500 yr B.P. for these forts, they were originally built at a considerable distance from the coastline. Thus Dun Duchathair was not a promontory fort. The earliest recorded habitation at Dun Aonghusa, dated to the middle of the Bronze Age, was, therefore, at some distance inland and not on an exposed 70 m high cliff on the edge of the Atlantic Ocean. © 2004 Wiley Periodicals, Inc.