文章基本信息

标题：Pumice
本地全文：下载
作者：A Newton
期刊名称：Scottish Archaeological Internet Reports. SAIR
电子版ISSN：1473-3803
出版年度：2004
卷号：12
页码：57-57
出版社：Society of Antiquaries of Scotland
摘要：Pumice has been found in over 140 archaeological sites in Scotland (Newton 1999a). Recent research has demonstrated that most of this pumice was erupted, at different times, from the ice-covered Katla Volcanic System in southern Iceland. As well as occurring in archaeological sites and raised shorelines in Scotland, pumice also occurs at a small number of sites in Ireland, on raised shorelines in Arctic Canada, at Inuit archaeological sites and raised shorelines in western Greenland, raised shorelines in Svalbard and Iceland and raised shorelines and archaeological sites in Norway (Newton 1999a). The pumice found in archaeological sites in Scotland is mainly brown, grey or black in colour and has been retrieved from contexts dating from the Mesolithic to Modern. Geochemical analyses of pumice has shown that, wherever it is found, the pumice produced by Katla can be split into three distinct groups. These three groups can be correlated to tephra (volcanic ash) layers and pumice found around Katla (Larsen et al 2001).