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Prehistoric gold markers and environmental change: A two-age system for standing stones in western Ireland

机译:史前的金标和环境变化:西爱尔兰的两龄制站立石

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The Murrisk Peninsula in southwest County Mayo is a major target for gold exploration in Ireland. The most productive areas include the Cregganbaun Shear Zone and Cregganbaun Quartzite Belt on Croagh Patrick, both geologically related to Iapetus closure, and gold is concentrated in alluvial deposits of river systems draining these areas. A comparison of gold occurrences with the location of prehistoric stone monuments reveals that simple standing-stone monuments, though isolated from other monument types, correlate with alluvial gold. South of the Murrisk Peninsula in Connemara, isolated standing stones are associated with a wide range of mineral resources and with other monuments. Dating of the stones relative to blanket-bog expansion and coastal landform changes indicates that standing stones were raised as markers of gold placer deposits before a climatic deterioration at 1200 B.C. Late Bronze Age monuments with a ceremonial purpose are more complex and include stone alignments. (c) 2006 Wiley Periodicals, Inc.
机译:西南马约县的默里斯克半岛是爱尔兰金矿勘探的主要目标。生产力最高的地区包括克罗阿特帕特克(Croghgh Patrick)上的克雷根鲍恩(Cregganbaun)剪切带和克雷根鲍恩(Cregganbaun)石英岩带,二者在地质上都与伊阿佩图斯(Iapetus)封闭有关,并且金集中在排泄这些区域的河流系统的冲积沉积物中。将金矿的发生与史前石碑的位置进行比较,可以发现尽管简单的立石碑虽然与其他纪念碑类型隔离,但却与冲积金相关。在康尼马拉(Connemara)的默里斯克(Murrisk)半岛以南,孤立的立石与各种矿产资源和其他古迹相关。相对于毯状沼泽扩张和沿海地貌变化而言,这些石头的年代表明,在公元前1200年气候恶化之前,立起的石头被作为金砂沉积物的标志物而升高。具有礼仪目的的晚期青铜时代古迹更为复杂,并包括石碑。 (c)2006年Wiley Periodicals,Inc.

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