skip to navigation
ADS Main Website
Help
|
Login
/
Browse by Series
/
Series
/ Journal Issue
Radiocarbon 47 (3)
Title
The title of the publication or report
Title:
Radiocarbon 47 (3)
Series
The series the publication or report is included in
Series:
Radiocarbon
Volume
Volume number and part
Volume:
47 (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:
AJ J T Jull
Publisher
The publisher of the publication or report
Publisher:
University of Arizona, Department of Geosciences
Year of Publication
The year the book, article or report was published
Year of Publication:
2005
Source
Where the record has come from or which dataset it was orginally included in.
Source:
BIAB (The British & Irish Archaeological Bibliography (BIAB))
Relations
Other resources which are relevant to this publication or report
Relations:
URI:
http://www.ingentaconnect.com/content/arizona/rdc
Created Date
The date the record of the pubication was first entered
Created Date:
06 Jun 2006
Please click on an Article link to go to the Article Details.
Article Title
Access Type
Author / Editor
Page
Start/End
Abstract
Influence of mollusk species on marine \\DeltaR determinations
Philippa L Ascough
Gordon T Cook
Andrew J Dugmore
E Marian Scott
Stewart P H T Freeman
433 - 440
Radiocarbon ages were measured on replicate samples of burnt grain and five mollusc species collected from a single sealed layer at an archaeological site (Hornish Point) on the west coast of South Uist, Scotland. The aim was to examine the impact of using different mollusc species on 14C activity of mollusc shells that were contemporaneous in a single location. This study found no significant variation in the 14C ages of the mollusc species, and consequently, no significant variation in calculated values of \\DeltaR. The implication is that in an area where there are no carboniferous rocks or significant local inputs of freshwater to the surface ocean, any of a range of marine mollusc species can be used in combination with short-lived terrestrial material from the same secure archaeological context to accurately determine a \\DeltaR value for a particular geographic location and period in time.
Progress in AMS target production of sub-milligram samples at the NERC Radiocarbon Laboratory
Tanya Ertunç
S Xu
Charlotte L Bryant
Colin Maden
Callum Murray
Margaret Currie
Stewart P H T Freeman
453 - 464
Recent progress in graphite target production for sub-milligram environmental samples in our facility is presented. The authors describe an optimized hydrolysis procedure now routinely used for the preparation of CO2 from inorganic samples, a new high-vacuum line dedicated to small sample processing (combining sample distillation and graphitization units), as well as a modified graphitization procedure. Although measurements of graphite targets as small as 35 µg C have been achieved, system background and measurement uncertainties increase significantly below 150 µg C. As target lifetime can become critically short for targets <150 µg C, the facility currently only processes inorganic samples down to 150 µg C. All radiocarbon measurements are made at the Scottish Universities Environmental Research Centre (SUERC) accelerator mass spectrometry (AMS) facility. Sample processing and analysis are labour-intensive, taking approximately three times longer than samples \\geqslant500 µg C. The technical details of the new system, graphitization yield, fractionation introduced during the process, and the system blank are discussed in detail. Includes
Appendix
464
list of equipment with descriptions and suppliers