Le controle du socle dans l'évolution de la sedimentation en Manche occidentale apres le Paléozoïque
The estimates of the thickness of the Mesozoic and Cenozoic sediments found in the western Channel show that the deposition of these sediments was controlled by two independent processes. (1) In the longitudinal direction, the displacement of maximum sedimentation, from east to west is entirely depe...
| Published in: | Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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The Royal Society
1975
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1098/rsta.1975.0046 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.1975.0046 |
| Summary: | The estimates of the thickness of the Mesozoic and Cenozoic sediments found in the western Channel show that the deposition of these sediments was controlled by two independent processes. (1) In the longitudinal direction, the displacement of maximum sedimentation, from east to west is entirely dependent on the opening of the North Atlantic. (2) In a transverse direction, it is probable that the difference of subsidence between the two sides of the Aurigny—Ouessant fault originated from the fracturing of the original Atlantic rift in the Western Approaches. Transverse compressions and extensions have disturbed the continual depression of the Channel towards the west. |
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