Estonian Tremadocian black-shales
by Sophie Graul, Tallinn University of Technology, Tallinn, Estonia
Cross-section of a drill core from the Aseri deposit, showing alternation between beds of Tremadocian black shale , also known as ‘Graptolite Argilite’ and phosphorite-bearing sandstone.
The black shales are enriched with organic matter and are investigated for their V, Mo and U potentials. Also, they contain authigenic K-feldspars. This image represents the first horizons formed at the boundaries between the Kallavere Formation and the Türisalu Formation.
Category
Location
- Europe (3748)
- Northern Europe (895)
- Estonia (41)
- Exact location (26.8591 E, 59.4477 N)
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2616 × 825 px;
image/png; 4.3 MB
Taken in
2019
Submitted on 23 March 2024
Licence
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)
Credit
Sophie Graul (distributed via imaggeo.egu.eu)
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