ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00408.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Shell samples of the marine gastropodTurbo sarmaticushave been examined to assess their potential for electron spin resonance (ESR) dating. The shells were found to be composed of aragonite. ESR analysis shows the presence of three radiation sensitive peaks. Equivalent dose (ED) values for two of the peaks have been determined for thirteen samples. When the two sets of ED values are plotted against each other, four distinct clusters are found that appear to represent four different age groups. The apparent age groups determined here are consistent with the stratigraphic record of the sites.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00409.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Magnetic and other measurements are reported for the Guehenno II Gallo‐Roman hoard (56‐France) which, amongst several thousand Tetricus antoniniani, contains 275 coins struck with the same dies. The orientation of the remanent magnetization is systematically directed outwards from the obverse confirming the identity of the anvil die with the obverse. The magnetization vector is statistically distributed around the vertical axis giving no indication of the geomagnetic inclination at the time of striking. Consequently ancient struck coins cannot be used for dating. The origin of the remanent magnetization was also investiga

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00410.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Analysis of early copper‐base artifacts invariably reveals traces of iron. Iron enters the copper during the smelting process and the level of iron in the metalwork is an indication of the smelting technology. In areas such as Western Europe where prehistoric slag heaps are absent even in the proximity of undoubted ancient mines, the iron content is low reinforcing the link between smelting technology and iron content. Very occasionally the iron content was deliberately encouraged and alloys containing between 30% and 50% of iron in copper were made, mainly for use in currency. These alloys are without modern parallel and their metallography and method of production are considered in some detail her

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00411.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

A recent argument for raising the absolute date of the beginning of the Aegean Late Bronze (LB) Age to about 1700 B.C. is critically examined. It is argued here that: (1) the alabaster lid from Knossos did have the strati‐graphical context assigned to it by Evans, in all probability Middle Minoan IIIA,c. 1650 B.C.; (2) the attempt to date the alabastron found in an early Eighteenth Dynasty context at Aniba to Late Minoan IIIA:1 is open to objections; (3) radiocarbon dates from Aegean LB I contexts are too wide in their calibrated ranges and too inconsistent both within and between site sets to offer any reliable grounds at present for raising Aegean LB I absolute chronology to 1700 B.C. Other evidence, however, suggests this period began about 1600 B.C., i.e. some fifty years earlier than the conventional date of 1550 B.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00412.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Additional comment on the new high‐precision calibration curves and tables published after this article (Archaeometry29 (1), 1987, 45–49) was in pr

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00413.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Thermoluminescence dates obtained from burnt flints and quartz recovered from the same sites are compared. For the Upper Perigordian level at la Vigne Brun (Loire, France), four quartz specimens and three flints yielded average ages of 27 400 ± 2300 and 26 900 ± 2200 years respectively, which are 15% greater than the radiocarbon age obtained for the same site (Evin 1982). For the neolithic site of la Vallée aux Fleurs (Loir et Cher, France), the respective averages of three flints and three ceramic sherds were 6830 ± 560 and 6570 ± 520 y

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00414.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Bones from a Bronze Age settlement in a low‐lying area in The Netherlands were analysed for their content of strontium and certain other elements. Low strontium concentrations in the human bones indicate that part of the diet consisted of animal products. Milk and dairy products were probably also incorporated in the diet. This would have had a marked effect on the Sr/Ca ratio of the total diet and on the strontium content of human bones. Anomalous mean strontium concentrations for the animal species are tentatively explained in relation to the specific environment of the settlement. Different pasturing practices for cattle and sheep/goat respectively are possibly reflected by the strontium content of their bone

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00415.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Skeletal lead levels are unexpectedly high (averaging 118 ppm and reaching 424 ppm maximum) in seventeenth to nineteenth century Caribbean slave skull remains. Younger specimens show significantly lower lead concentrations. Historical data confirm the supposition from skeletal lead measurements that blood lead levels probably resulted in lead intoxication symptoms in a significant fraction of this population.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00416.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Cluster analysis has been applied to the spectrochemical data obtained in the analysis of some mediaeval glass fragments. Differences have been observed between Catalan glasses and all European glasses, and also between European glasses from different countries. To distinguish geographical origin sodium, potassium, calcium, magnesium and aluminium have been shown to be adequate.

ISSN:0003-813X    

DOI:10.1111/j.1475-4754.1987.tb00417.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY