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A Point in Time: An evaluation of the bifacial point chronology in Northern Sweden
Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.ORCID iD: 0000-0003-4530-9784
Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
Västerbottens Museum, Umeå, Sweden.
(English)Manuscript (preprint) (Other academic)
National Category
Archaeology
Identifiers
URN: urn:nbn:se:umu:diva-220811OAI: oai:DiVA.org:umu-220811DiVA, id: diva2:1837220
Available from: 2024-02-13 Created: 2024-02-13 Last updated: 2024-02-13
In thesis
1. Blinded by the light: developing models of settlement and mobility with the use of spectroscopy and exploratory methods
Open this publication in new window or tab >>Blinded by the light: developing models of settlement and mobility with the use of spectroscopy and exploratory methods
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis an exploratory approach has been used to study settlement and mobility among hunter-gatherer societies in Northern Sweden during the 2 000 – 0 BC period. The focus has been on developing the topics of bifacial point use and raw material management of quartzand quartzite materials. The study combines the information generated at multiple analytical scales in order to address knowledge gaps and facilitate new research. The thesis consists of an introductory text and four research papers.

The first paper discusses modelling approaches in archaeology. It stresses the interlinked nature of models that are created at different spatial scales, and that weaknesses in lower-lying models may impact higher-level models in a study. The paper also discusses the question of whether an analysis is better suited for modelling in the “variable space”, rather than geographical space, as the data my need to undergo unnecessary simplification that hides certain features.

The second paper is an evaluation of the current dating evidence for bifacial points made of quartz or quartzite in Norrland. The study includes 124 radiocarbon datesfrom 30 excavated sites with finds of bifacial points or preforms in the County of Västerbotten. Bayesian modelling is used to evaluate the potential for building a chronological model for bifacial point use in the region. The results indicate that few artefacts can be related to a dated feature, with only 3 dates that may be argued to stem from a secure dating context that dates the points. These dates all fall within the 1 900 – 1 700 BC period.

The third paper is a spectroscopic study of quartz and quartzite material. The study is based on a dataset of 126 quartz/quartzite points and preforms from 47 sites along the upper Ångerman River. Non-destructive analysis was performed using three different spectroscopic instrumentations (Near Infrared, Raman, X-Ray Fluorescence). The data were evaluated using Exploratory Data Analysis (EDA). Each instrumentation showed detectable differences in the material, such as the presence or absence of graphite. The study highlights the potential of non-destructive screening methods and lays the foundation for future survey efforts.

The fourth paper is a spatial analysis of the distribution of bifacial points and preforms made of quartz and quartzite within the County of Västerbotten. The Ångerman and Ume/Vindel Rivers exhibit different distribution patterns, with higher proportions of preforms closer to the mountains. The distribution pattern is evaluated using Exploratory Data Analysis, including geostatistical methods. The capacity for previous settlement and mobility models to explain the observed patterns are then discussed in the light of factors such as archaeological survey coverage.

Place, publisher, year, edition, pages
Umeå: Umeå University, 2024. p. 66
Series
Archaeology and environment, ISSN 0281-5877 ; 34
Keywords
archaeology, hunter-gatherer, spectroscopy, chemometrics, quartz, quartzite, bifacial, lithics, geoarchaeology, exploratory, spatial analysis, modelling, arkeologi, jakt- och fångstfolk, spektroskopi, kemometri, kvarts, kvartsit, bifacial, flathuggen, geoarkeologi, rumslig analys, modellering
National Category
Archaeology
Research subject
Archaeology; environmental archaeology
Identifiers
urn:nbn:se:umu:diva-220813 (URN)978-91-8070-290-4 (ISBN)978-91-8070-289-8 (ISBN)
Public defence
2024-03-08, HUM.D.210, Humanisthuset, Umeå, 10:00 (English)
Opponent
Supervisors
Available from: 2024-02-16 Created: 2024-02-13 Last updated: 2024-02-13Bibliographically approved

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Sjölander, MattiasBudd, Chelsea

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