Limestone (BE.24.0006)

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Thin section pictures

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Rock determination
Sedimentary rock > Biochemical > Carbonate rock > Limestone
Chronostratigraphy
Phanerozoic; Paleozoic; Carboniferous; Lower Missisipian; Tournaisian
Lithostratigraphy
Tournai Formation; Vaulx Member
Rock name
Tournai limestone
Rock synonyms
Doornikse steen; Zwarte steen van Doornik
Additional information
bank 1 (0.3 m)

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Site type
Quarry
Location
Belgium; Henegouwen; Tournai
Site name
Vaulx
Excavation or Survey Team
Prof. Dr. Veerle Cnudde
Additional contextual information
Sampled in the context of research Prof. Dr. Veerle Cnudde.
Natural color
dark grey
Aged color
light grey
Components
white bioclasts (mainly crinoids) and carbonate intraclasts in a dark grey matrix
Texture
Structure
Weathering
light grey patina as the result of oxidation of organic material; frost sensitive when high clay fraction (vague plate-like cleavage); scratch sensitive
Diagnostic features
bioclastic wackestone/packstone
Additional information
Flepostore inventory nr.
GEOL1.L1.A1
Original inventory nr.
33435/7VC
Collection
Geological Department, Ghent University
Type
Covered thin section
Comparable thin section(s)
Components
calcite (>3/4), detrital quartz (<1/4), traces of dolomite, pyrite and a diffuse clay fraction; heterogeneous dispersed distribution of crinoids, shell fragments of Brachiopoda, Ostracoda, Gastropoda, coral fragments, Algae and more sporadic Bryozoa; micrite-microsparite matrix; very low porosity
Texture
very fine grain size
Structure
dark parallel oriented lenticular stains and striates (higher content of organic material); sometimes fine calcite veins
Weathering
Diagnostic features
very fine grained limestone; heterogeneous distribution of fossil fragments; lenticular stains/striates of organic material
Additional information
representative microscopic features of the microstructure and mineralogy of the stone
Sample type
Rock sample
Inventory number
BE.24.0006
Collection
Geological Department, Ghent University
Donating institute/person
Prof. Dr. Veerle Cnudde
Host collection
Other samples available
Yes
Sample collection method
Field Sampling (clay/rock)

Gerard R. & Guyon de Montlivault F. 1986

Full reference

Gerard R. & Guyon de Montlivault F. 1986. De Doornikse steen. WTCB, Technische Voorlichting 163, Bijlage 1: 12

Cite this page as: Flepostore - https://flepostore.ugent.be/rock/be-24-0006
Last modified: 2024-05-02.