skip to navigation
ADS Main Website
Help
|
Login
/
Browse by Series
/
Series
/ Journal Issue
Archaeometry 45 (3)
Title
The title of the publication or report
Title:
Archaeometry 45 (3)
Series
The series the publication or report is included in
Series:
Archaeometry
Volume
Volume number and part
Volume:
45 (3)
Publication Type
The type of publication - report, monograph, journal article or chapter from a book
Publication Type:
Journal
Editor
The editor of the publication or report
Editor:
M S Tite
Günther A Wagner
M S Shackley
M Martini
Publisher
The publisher of the publication or report
Publisher:
Research Laboratory for Archaeology & the History of Art
Year of Publication
The year the book, article or report was published
Year of Publication:
2003
Source
Where the record has come from or which dataset it was orginally included in.
Source:
BIAB (The British & Irish Archaeological Bibliography (BIAB))
Created Date
The date the record of the pubication was first entered
Created Date:
03 Feb 2004
Please click on an Article link to go to the Article Details.
Article Title
Access Type
Author / Editor
Page
Start/End
Abstract
Evaluation of the analytical potential of laser-induced breakdown spectrometry for the analysis of historical glasses
K Müller
H Stege
421 - 433
The novel, and for archaeometrical applications still rarely used, Laser-Induced Breakdown Spectrometry (LIBS) was tested on various standard glasses for its spectrometric performance. LIBS is an almost non-destructive method based on the time-resolved detection of optical emission following direct laser ablation. A frequency-quadrupled Nd:YAG laser at 266 nm was found to cause a hardly visible crater of c. 200 µm in diameter. The application of an innovative high-resolution Echelle spectrograph allows the fast and simultaneous determination of up to 90 elements in the spectral range from 200 to 780 nm, with a resolution of 10-30 pm under ambient conditions. In principle, LIBS has a high analytical potential for archaeometry; in particular, for the determination of light elements (Li, Be, B and others). Because the measurement parameters (laser energy, delay time and number of pulses) do not independently influence the emission signal, their optimization proved to be complex and is rather a compromise for the range of elements. The effects of sample distance, surface roughness and the accumulation of depth profiles were studied. Problems arose for the determination of sodium and potassium in higher contents due to self-absorption effects. Quantification tests using a silicon line as internal standard yielded a precision range between 3% and 20% relative, but in general no satisfying accuracy for a number of elements. However, these problems might be overcome in the near future by improved spectrometer set-ups and matrix correction approaches.
Roman glass-making at Coppergate, York?; Analytical evidence for the nature of production
C M Jackson
L Joyner
C A Booth
P M Day
Emma C Wager
V Kilikoglou
435 - 456
Ceramic vessels and associated vitreous debris, excavated at Coppergate, York, have been interpreted as the remains of Roman glass-making from the raw materials. This paper reports the results of analysis of this assemblage by XRF, ICPS, XRD, SEM-EDAX and thin-section petrography. These findings suggest that some ceramic vessels, used as crucibles, have been subjected to temperatures up to 1200°C, well above the firing temperatures of the local domestic assemblage from which they were selected. Analysis of quartz-rich debris, intimately mixed with glass in some samples and in others interleaved with glassy phases, indicates partially reacted glass-making raw materials, with -quartz, tridymite and cristoballite phases represented. This could represent evidence either of a failed attempt to frit the raw materials, or a batch that had not fully fused. Variability in the composition of glass at the site is viewed in the light of glass-making technology, and possible interpretations concerning this episode are discussed in the light of the archaeological evidence.
Uranium-series and luminescence dating of volcanic lithic artefacts
M E Morgenstein
S Luo
T-L Ku
James K Feathers
503 - 518
U-series dating was used to determine the growth rate of a feldspar-to-clay weathering rind in a mid-Holocene Cascade-Olcott tradition andesite core, and luminescence dating (last exposure to sunlight) was used to date fine-grained feldspars scraped from the surfaces of similar buried artefacts from a 14C-sediment-dated archaeological site (45KI464) on the wet western slope of the Cascade Mountains of Washington. For U-series dating, we measured 226Ra excess (226Ra excess =226Ra -230Th) in five stratigraphic depth controlled rind scrapings. 238U, 232Th and 230Th were counted by alpha spectrometry, and 226Ra and 210Pb were counted by gamma spectrometry on each sub-sample.
Dating archaeometallurgical slags using thermoluminescence
M Haustein
G Roewer
M Krbetschek
Ernst Pernicka
519 - 530
Thermoluminescence has a great potential for dating archaeometallurgical slags, because the smelting process leads to a well-defined resetting of the `luminescence clock'. However, the complex compositions of slags have unpleasant consequences for TL measurements if the bulk slag substance is used. To overcome this problem, quartz has been separated out of slag matrices by chemical and physical procedures. The TL measurements were carried out on this defined mineral phase. This method was tested with seven slag samples from different locations and ages. In most cases, the TL ages determined show good agreement with reference data.
Radiocarbon measurements from the British Museum: Datelist XXVI
J Ambers
S Bowman
531 - 540
This is the final datelist from the British Museum Laboratory, which closed to new samples in mid-2000. It consists of dates obtained by liquid scintillation counting of benzene derived from archaeological samples and continues the publication of British Musem datelists in Archaeometry, which started with datelist xxiv.