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Archaeometric study of prehistoric polished stone artefacts found in the Ljubljanica river (Slovenia)
No full textSynchrotron FTIR micro-spectroscopy applied to the study of polished serpentinite artefacts: a non destructive analytical approach
No full textSerpentinite is one of the most frequently raw materials used to produce polished stone artefacts in prehistory. Several conventional analytical techniques can be applied to identify the serpentine minerals but their application generally requires a powdered sample. This implies that the artefacts to be analysed must be damaged, grinded and the possibility to analyze a mixture of different serpentine polymorphs is high. The use of spatially resolved techniques is therefore a necessity to overcome this problem. Several thin sections of serpentinitic rocks and prehistoric axes have been analyzed by Synchrotron Fourier Transform InfraRed Micro-Spectroscopy while some spectra were acquired directly on specific points of polished stone artefacts and allowed recognizing the different polymorphs of serpentine minerals without causing any damage to the objects. The results comfort the infrared micro-spectroscopy technique as a performing tool for the characterization of archaeological lithic material
A metabasite shaft-hole axe from Grotta Azzurra di Samatorza (Trieste Karst): first evidence of connections between northeastern Italy and Central Europe during Neolithic
No full textIMA 2010; 20th General Meeting of the International Mineralogical Association - 21 -27 August 2010
Budapest, Hungar
SHAFT-HOLE AXES FROM SLOVENIA AND NORTH-WESTERN CROATIA: A FIRST ARCHAEOMETRIC STUDY ON ARTEFACTS MANUFACTURED FROM META-DOLERITES
No full textA group of Copper Age shaft-hole axes from Caput Adriae (northeastern Italy, western
Slovenia and northwestern Croatia) manufactured using meta-dolerite have been analysed for
major and trace elements. All the samples show magmatic textures and well recognizable
relicts of primary mineralogical phases. Petrographic observations suggest an ophiolitic
provenance of the protolithic source(s) while geochemical data indicate that the original
magmas originated in a fore arc or pre arc tectonic setting. Strong similarity has been found
with several lithotypes from the Banija Ophiolite Complex (Croatia), here indicated as the
most probable source area. Considering the available archaeometric data about shaft-hole
axes found in northern Italy and Caput Adriae in comparison to those of axe blades discovered
in the same area, it emerges that there is a utilization of different rock types, the source of
which appears to be quite close to the discovery sites. In the investigated area the shaft-hole
axes are largely made from ophiolitic-related rocks which are associated with copper deposits.
Consequently there may have been a relation between the localization of the geological
sources of shaft-hole axes and the development of metallurgical activities
SHAFT-HOLE AXES FROM SLOVENIA AND NORTH-WESTERN CROATIA: A FIRST ARCHAEOMETRIC STUDY ON ARTEFACTS MANUFACTURED FROM META-DOLERITES
No full textA group of Copper Age shaft-hole axes from Caput Adriae (northeastern Italy, western
Slovenia and northwestern Croatia) manufactured using meta-dolerite have been analysed for
major and trace elements. All the samples show magmatic textures and well recognizable
relicts of primary mineralogical phases. Petrographic observations suggest an ophiolitic
provenance of the protolithic source(s) while geochemical data indicate that the original
magmas originated in a fore arc or pre arc tectonic setting. Strong similarity has been found
with several lithotypes from the Banija Ophiolite Complex (Croatia), here indicated as the
most probable source area. Considering the available archaeometric data about shaft-hole
axes found in northern Italy and Caput Adriae in comparison to those of axe blades discovered
in the same area, it emerges that there is a utilization of different rock types, the source of
which appears to be quite close to the discovery sites. In the investigated area the shaft-hole
axes are largely made from ophiolitic-related rocks which are associated with copper deposits.
Consequently there may have been a relation between the localization of the geological
sources of shaft-hole axes and the development of metallurgical activities
An archaeometric study of the prehistoric polished stone tools from the Ljubljanica River (Slovenia)
No full textAn archaeometric study of the prehistoric polished stone tools from the Ljubljanica River (Slovenia).The archaeometric analysis of 31 polished stone tools from the Ljubljanica River near the site of Hočevarica ispresented in this article. Amongst 20 axe blades, massive sub-rectangular specimens obtained mainly from localpyroclastic rocks are the most abundant. One small triangular piece is made from jade from northwestern Italy. Fourof 7 shaft-holed axes are obtained from serpentinite whose probable origin is to be sought in the Hohe Tauern area(central Austria)
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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