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Loevezijn, G.B.S. van. |
The Upper Devonian shelf of the studied area was divided into two platforms separated by a significant break in the slope, related to the deep-seated fault system of the Sabero-Gordón Line. As differentiated block movements influenced the depositional history of the area, an External Zone, an Intermediate Zone and an Internal Zone can be distinguished. Each zone runs parallel to the east-west striking Upper Devonian coast and has a characteristic sedimentary succession. Due to upheaval, tilting and erosion of the area north of the Sabero-Gordón Line and intermitted subsidence south of this line, related to progradation of the linear shoreline from north to south, three regressive coarsening upward sequences were deposited in the External Zone. The first... |
Tipo: Article / Letter to the editor |
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Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/505665 |
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Loevezijn, G.B.S. van; Raven, J.G.M.. |
During the Late Devonian, deposition in the Cantabrian Mountains was largely controlled by movements along faults. By way of intermitting subsidence of the area south of the Sabero-Gordón line and the connected progradation of the coast during the Frasnian and early Famennian, three regressive sequences were deposited. On account of these sequences the Nocedo Formation is divided into three units. Before the late Famennian transgression, after which the upper part of the Ermita Formation was deposited, the area was peneplained. Six facies maps show the changes in palaeogeography during the Late Devonian. |
Tipo: Article / Letter to the editor |
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Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/505765 |
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Loevezijn, G.B.S. van. |
The Asturo-Leonese Basin is one of the three large palaeogeographical units of the Cantabrian Zone. In the north the basin is bounded by the Asturian Geanticline and the Palencian Basin. In the south the Palaeozoic succession is covered by Mesozoic and Tertiairy deposits. The Upper Devonian to lowermost Carboniferous succession of the Asturo-Leonese Basin includes the Nocedo Formation with the Gordón and Millar members, the Fueyo and the Ermita Formation. In these units, eight facies and ten subfacies are distinguished. The sediments of facies a, b, c2, c3, and cr are grouped in an inner shelf cluster, whereas facies cl, e, f, and g are grouped in an outer shelf cluster. With the aid of facies maps and conodont data the palaeogeographic development of the... |
Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
Ano: 1986 |
URL: http://www.repository.naturalis.nl/record/317402 |
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