Intrusive igneous rock (SE.11.0006)

Hand specimen pictures (macro & binocular)

Thin section picture

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Rock determination
Igneous rock > Intrusive
Chronostratigraphy
Precambrian
Lithostratigraphy
Rock name
Påskallavik porphyry
Rock synonyms
Additional information

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Site type
Consumption site
Location
Belgium; West-Vlaanderen; Knokke-Heist
Site name
Knokke, Witte Hoeve
Excavation or Survey Team
Prof. Dr. Wim De Clercq and Dr. Roland Dreesen
Additional contextual information

Provenance

Location
Sweden; Kalmar län / Jönköpings län / Kronoberg län
Region
Småland
Supposed site(s) of provenance
Additional information
interpreted as a glacial erratic collected from cobble beaches in the Baltoscandian area; geologically the rock originates from the Småland region in southern Sweden
Natural color
orange-red to pinkish red; white phenocrysts
Aged color
Components
large angular and broken feldspar phenocrysts; quartz
Texture
porphyritic
Structure
Weathering
Diagnostic features
large broken feldspar phenocrysts
Additional information
Sample type
Tool
Artefact information
ballast stone, sample number KWH-5
Inventory number
SE.11.0006
Collection
Archaeological Department, Ghent University
Donating institute/person
Host collection
Other samples available
No
Sample collection method
Archaeological Field Survey

De Clercq et al. 2017

Full reference

De Clercq W., Dreesen  R., Dumolyn J., Leloup W. & Tracht J. 2017. Ballasting the Hanse: Baltoscandian erratic cobbles in the Later Medieval port landscape of Bruges. European Journal of Archaeology 20, 4: 710-736.

Dreesen & De Clercq 2020

Full reference

Dreesen  R. & De Clercq W. 2020. Ballaststenen en hun rol in het voormalige middeleeuwse Brugse havenlandschap. In: De Kock T., De Ceukelaire M. & Van der Star C. (Eds.). Pracht en Praal, 7e Vlaams-Nederlandse natuursteendagen, 12-13 maart 2020, Antwerpen. Professional Papers of the Geological Survey of Belgium, 318: 7-18.

Cite this page as: Flepostore - https://flepostore.ugent.be/rock/se-11-0006
Last modified: 2024-04-28.