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Different glassmaking technologies in the production of Iron Age black glass from Italy and Slovakia
Sonia Conte Rossella Arletti Julian Henderson Patrick Degryse Annelore Blomme 《Archaeological and Anthropological Sciences》2018,10(3):503-521
This study presents the results of an archaeometrical investigation performed on 75 black glass beads dated to the ninth–fifth century BC coming from Bologna, Cumae, and Pozzuoli (Italy), and Chotin (Slovakia). The analyses of the major, minor, and trace elements—as well as that of Sr and Nd isotopes performed on a selection of samples coming from Bologna—provided evidence for two different production technologies in Iron Age black glass found in Italy (natron glass, probably produced in Egypt) and Slovakia (wood ash glass, probably produced in Europe). In both cases, the glasses derive their black colouration from the high presence of iron (around 12 % FeO), introduced into the glass batches through the intentional choice of dark sands. The production model appears to be small-scale and experimental, characterised by the use of non-sorted raw materials and poorly defined formulae, producing glass with a high chemical variability. The wood ash technology appears to have dropped out of use in Europe until the Medieval period, while natron production spread quickly, becoming predominant throughout the Mediterranean. 相似文献
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Glass and glass production in the Oman peninsula in antiquity reconsidered – chemical and mineralogical investigation of sands 下载免费PDF全文
Alicia Van Ham‐Meert Sarah Dillis Bruno Overlaet Patrick Degryse 《Arabian Archaeology and Epigraphy》2018,29(1):93-101
A batch of green‐ and amber‐coloured glass chunks and unguentaria dating from the first century CE was found in 2007 at Dibba al Hisn, a site on the Arabian Sea coast of the United Arab Emirates (UAE). Its elemental and isotopic composition revealed the glass to be of a previously unknown plant ash glass type, different from known contemporary Roman, Mesopotamian, and Indian glass. The Sr isotopic composition of the glass corresponds to locally available plants, pointing to the possible existence of a first‐century CE local glass production centre. To explore this possibility, sands from around the UAE were analysed to establish their suitability for glass making and correspondence with the Dibba finds. This paper presents the results of the elemental analysis of fourteen sands. The analysis, performed using inductively coupled plasma optical emission spectroscopy (ICP‐OES), revealed all sands to be rich in lime and alumina. X‐ray diffraction revealed the presence of calcite and other carbonate minerals, as well as antigorite and quartz. Comparison of the sand compositions to average first‐century CE non‐Roman glass found at Dibba showed them to be unsuitable as raw material for producing the glass of Dibba. The evidence thus identifies this glass batch as imported, contrary to what was suggested before. This paper also reviews the occurrence of thick‐walled unguentaria in the region. 相似文献
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Patrick O'Brien 《Australian journal of political science》1990,25(1):113-130
Aside from bribery and corruption associated with the police and organized ‘vice and crime’, Mr Tony Fitzgerald Q.C. highlighted in his ‘Report’ five criteria as areas of concern over the health and future of parliamentary democracy in Queensland. They were: 1. Decline of Parliament in terms of (a) sitting hours, and (b) consistent refusal by the Premier and Ministers to answer parliamentary questions and to be fully accountable and responsible to Parliament for public expenditures, ministerial expenses and extra‐parliamentary executive decisions; 2. Business deals, joint ventures and other financial transactions between government, its agencies and government favourites; 3. Lavish funding of the governing political party by recipients of its favours; 4. Political ‘stacking’ of the public service; 5. Use of taxpayers’ funds by Premier and Ministers to finance writs against critics. 相似文献
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Patrick Morgan 《Australian journal of political science》1975,10(1):100-103
John Docker, Australian Cultural Elites: Intellectual Traditions in Sydney and Melbourne, Angus and Robertson, Sydney, 1974, pp. xii + 182. $5.95, paper. 相似文献