Ignimbrite (SE.13.0004)

Hand specimen pictures (macro & binocular)

Thin section picture

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Rock determination
Igneous rock > Pyroclastic > Ignimbrite
Chronostratigraphy
Precambrian
Lithostratigraphy
Rock name
Dala/Dalarna ignimbrite
Rock synonyms
Älvdalen ignimbrite
Additional information

Find location

Site type
Consumption site
Location
Belgium; West-Vlaanderen; Damme
Site name
Hoeke
Excavation or Survey Team
Prof. Dr. Wim De Clercq and Dr. Roland Dreesen
Additional contextual information

Provenance

Location
Sweden; Dalarnas län
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 a large volcanic field near the village of Älvdalen (in the middle of Sweden, 350 km to the north-west of Stockholm)
Natural color
red brown with light brown flames: liver-colored
Aged color
Components
small feldspar phenocrysts
Texture
typical "fiamme": layered/banded texture (eutaxitic texture)
Structure
Weathering
Diagnostic features
fiamme; small phenocrysts
Additional information
Sample type
Tool
Artefact information
ballast stone, sample number Ho-62
Inventory number
SE.13.0004
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.

Wikström et al. 2015

Full reference

Wikström A., Pereira D., Lundqvist T. & Cooper B. 2015. The Dala (Älvdalen) porphyries from Sweden. EPISODES: Journal of International Geoscience 39, 2: 79-84.

 

Link
Cite this page as: Flepostore - https://flepostore.ugent.be/rock/se-13-0004
Last modified: 2024-04-28.