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| Bosch, W.J. van den. |
| After a late-Precambrian folding, clastic deposits, partly continental, spread out over the region during the Lower Cambrian; later, marine intercalations became more abundant when upper Lower Cambrian marine sediments were deposited. This sedimentation continued until the Upper Carboniferous and occurred on a generally stable shelf between a rise in the NNE (the Asturian Geanticline) and a curved geosyncline (present at least until the Devonian) in the SSW. Unstable conditions prevailed during the Upper Cambrian and the Couvinian-Givetian. The Asturian Geanticline extended several times towards the SSW, which resulted in emergence, accompanied by erosion, of the Luna-Sil region during the Llanvirn-Llandovery, during the Gedinnian (only the NNE part) and... |
| Tipo: Article / Letter to the editor |
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| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/505637 |
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| Bosch, W.J. van den. |
| The structures in the SW part of the Cantabrian Mountains have much in common with those of the Foothills Belt of the Rocky Mountains, the Alps and the Central European Hercynian orogene, and their origin can be explained in the same way as that of the structures in these orogenes. The greywacke sedimentation and the folding both migrated from the internal to the external part of the original basin during the Upper Carboniferous. The folds and thrust faults run parallel to the axis of the original basin. The basement has been broken into large blocks in the shape of parallelograms, along the boundary faults of which local deviations of the regional directions occurred. |
| Tipo: Article / Letter to the editor |
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| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/505859 |
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| Sitter, L.U. de; Bosch, W.J. van den. |
| The present map is the continuation of the map published by De Sitter in 1962. The folded Precambrian basement in this area is overlain unconformably by Cambrian up to Carboniferous strata. The Palaeozoic has been uplifted during the Bretonic phase, and folded during the Sudetic, Asturian, and Saalic phases. In the western end of the Leónides the structures known from the eastern part of the Luna unit do not continue but are replaced bij one syncline and a number of thrusts. Major block faulting of the basement determined the curved structure of the ""Asturian Knee"" and also the diverse contemporaneous directions of thrusting and folding. Thinly developed Devonian of the Caldas Formation demonstrates the presence of a structural ridge early during the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/505645 |
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