Markham, M. (2009). The devil's in the detail. Internet Archaeology 26. Implement Petrology theme. Vol 26, https://doi.org/10.11141/ia.26.23.

Title
Title
The title of the publication or report
Title:		 The devil's in the detail
Subtitle
Subtitle
The sub title of the publication or report
Subtitle:		 a review of Group I and III petrographic thin-sections
Issue
Issue
The name of the volume or issue
Issue:		 Internet Archaeology 26. Implement Petrology theme
Series
Series
The series the publication or report is included in
Series:		 Internet Archaeology
Volume
Volume
Volume number and part
Volume:		 26
Biblio Note
Biblio Note
This is a Bibliographic record only.
Biblio Note		 The ADS have no files for download on this page but further information is available online, normally as an electronic version maintained by the Publisher, or held in a larger collection such as an ADS Archive. Please refer to the DOI or URI listed in the Relations section of this record to locate the information you require. In the case of non-ADS resources, please be aware that we cannot advise further on availability.
Licence Type
Licence Type
ADS, CC-BY 4.0 or CC-BY 4.0 NC.
Licence Type:
Creative Commons Attribution 3.0 International Licence icon
Creative Commons Attribution 3.0
International Licence
Publication Type
Publication Type
The type of publication - report, monograph, journal article or chapter from a book
Publication Type:		 Journal
Abstract
Abstract
The abstract describing the content of the publication or report
Abstract:		 Re-examination of 149 IPG Group I (119), Group Ia (17) and Groups III and IIA (13) axe petrographic thin-sections resulted in twenty-four sub-groups being identified, each sharing distinct petrographic features. Approximately 5% (eight thin-sections) had mineralogy different from that of altered dolerite (greenstone), which defines these IPG Groups. All 149 thin-sections are visually compared with seventy-three new petrological thin-sections that were produced from thirteen greenstone exposures in North and South Cornwall. The closest petrological match between axe and greenstone suggests Mounts Bay, possibly Long Rock. Mousehole and Penlee exposures may be the source of material for some of the twenty-four sub-groups. Two greenstone samples found in north-west Cornwall, away from known exposures, provided the closest petrographic match found between axe and rock thin-sections. This supports Keiller et al. (1941) in their assumption that IPG Group I originates from Mounts Bay, but indicates it is unlikely that a single exposure provided the material for all IPG Group I axes. Further analysis using a novel quantitative technique supports the results of the visual examination and may prove to be the basis of a future tool to be used in recording and assigning Neolithic axes to IPG Groups.
Author
Author
The authors of this publication or report
Author:		 Mik Markham
Year of Publication
Year of Publication
The year the book, article or report was published
Year of Publication:		 2009
Locations
Locations
Any locations covered by the publication or report. This is not the place the book or report was published.
Locations:
District: Cornwall
Country: England
Locations
Locations
Any locations covered by the publication or report. This is not the place the book or report was published.
Subjects / Periods:
Neolithic (Auto Detected Temporal)
Core Axe (Object England)
Groups (Auto Detected Subject)
Mounts Bay (Auto Detected Subject)
Source
Source
Where the record has come from or which dataset it was orginally included in.
Source:
Source icon
BIAB (biab_online)
Relations
Relations
Other resources which are relevant to this publication or report
Relations:
DOI: https://doi.org/10.11141/ia.26.23
URI: http://intarch.ac.uk/journal/issue26/markham_index.html
Created Date
Created Date
The date the record of the pubication was first entered
Created Date:		 18 Mar 2010