ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00446.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

In recent years ion beam techniques have become more and more important since in most cases the analysis of copper and copper alloy coins has to be non‐destructive. It is therefore of interest to study the relative advantages of several nuclear methods for a certain type of metal.The results are presented here of a comparison between three non‐destructive ion beam techniques: particle induced X‐ray emission, proton activation analysis and fast neutron activation ana

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00447.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Results of a combined archaeological and analytical project of Late Neolithic/Early Bronze Age copper, bronze and lead artefacts from four distinct areas of mainland Greece are presented. The aim of the study is to understand better the stages of technological development of each region, their possible ore sources and also to assess any external contribution to or internal evolution of their metallurgy. Interesting results which could challenge the established view of Late Neolithic/Early Bronze Age metallurgy in the Greek mainland are presented.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00448.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

A method is described for the analysis of archaeological rock artefacts which provides major and trace element data. Wavelength‐dispersive X‐ray fluorescence (WDXRF) analysis of 2:1 fusion beads permits the accurate and precise measurement of a wide range of elements. Accuracy and precision are nominally 1‐5% for elements having concentrations above 3 times the detection limit. The method requires a much smaller sample size than conventional WDXRF procedures and has been successfully used to characterise early millstones; a number of other applications in archaeology are suggested

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00449.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

The combined application of fission track analysis and neutron activation‐induced β‐autoradiography to map the trace element distributions of scandium, cobalt, uranium and rare earth elements in fossil bone samples from East Africa is described. Both uranium and the rare earth elements are incorporated into bone apatite during fossilisation, whereas scandium and cobalt occur additionally in any iron‐manganese minerals precipitated in pore spaces within the bone cortex. The distribution of uranium is different from that of the rare earth elements in the fossil bone cortices; it enters fossil bone more rapidly and is sensitive to changes in the redox potential of the palaeogroun

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00450.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Amber, a class of fossil resins, comprises largely terpenoid components. The structure of the major, insoluble portion has not been defined previously. We report the analysis of European amber by carbon‐13 nuclear magnetic resonance spectroscopy directly on solid samples. Two major types are defined, depending on the appearance of the alkene resonances. Baltic amber (succinite), along with other northern ambers such as gedanite, has a pronounced resonance from an exomethylene group. The southerly ambers (rumanite, schraufite, walchowite, delatynite and true simetites) lack the exomethylene resonances. The succinite group gives spectra consistent with a labdane‐type precursor and the rumanite‐like ambers give spectra consistent with an abietane‐type precursor. These results are best explained by at least two different palaeobotanical sources of the fossil

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00451.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Results of X‐ray fluorescence, X‐ray diffraction, thin section analysis and scanning electron microscopy applied to the neolithic pottery of Sesklo indicated the existence of quality variation in pottery, which seems to be the result of using different raw materials and different technological procedures. This differentiation has been observed temporally and spatially in the two excavated areas of the site. Application of physicochemical techniques to technological studies of ancient pottery gives for the first time evidence, with potentially important applications, of the social and economic structure of neolithic Gre

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00452.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Pompeiian‐style (hourglass) grain mills are common at many Roman sites within the circum‐Mediterranean countries. Three examples are known from Corfe Mullen, London and Hamworthy in southern Britain. Petrographic examination, chemical and microprobe analyses indicate that the Corfe Mullen millstone and the London donkey mill were imported from central France into southern Britain. The Hamworthy mill should be designated a ‘flat donkey mill’, and represents a recent (post‐Roman) import from a volcanic source in Sardinia. There is no evidence of importation of Roman donkey mills from Germany or for transportation of such mills (or stylistic derivatives) north

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00453.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

The eighth list of dates from the Oxford Radiocarbon Accelerator.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00454.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1988.tb00455.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY