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| Sibuet, Jean-claude; Ryan, W. B. F.; Arthur, M.; Barnes, R.; Blechsmidt, G.; De Charpal, O.; De Graciansky, P. C.; Habib, D.; Iaccarino, S.; Johnson, D.; Lopatin, B. G.; Maldonado, A.; Montadert, L.; Moore, D. G.; Morgan, G. E.; Mountain, G.; Rehault, J. P.; Sigal, J.; William, C. A.. |
| Lithologic and stratigraphic evidence from D.S.D.P. Site 398 (3910 m water depth, 1740 m total penetration) and regional seismic reflexion data are placed in the context of the early tectonic evolution of the North Atlantic ocean. The morphology of the western Iberian continental margin is the result of two main tensional episodes dated Permo-Lias and Upper Jurassic - Lower Cretaceous, during which the initial basins between Grand Banks and Iberia were created by subsidence and tilting of continental blocks. A limited oceanic opening had probably occurred in Jurassic time between these two tensional episodes. There was no relative motion during Lower Cretaceous between North America and Iberia. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1980 |
URL: http://archimer.ifremer.fr/doc/1980/publication-5394.pdf |
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| De Porras, M. E.; Maldonado, A.; Quintana, F. A.; Martel-cea, A.; Reyes, O.; Mendez, C.. |
| Multi-millennial environmental and climatic changes in central Chilean Patagonia (44-49 degrees S) during the Last Glacial-Interglacial cycle have been of particular interest as changes in the position and strength of the southern westerlies are the major forcing factor conditioning the environmental dynamics. Recent attempts to reconstruct regional environmental and climatic signals from central Chilean Patagonia reveal some discrepancies and unclear issues among the records. This paper presents the 13 ka pollen and charcoal records from Mallin El Embudo (44 degrees 40'S, 71 degrees 42'W) located in the deciduous Nothofagus forest in the middle Rio Cisnes valley. The paper aims to (1) establish the timing and magnitude of local vegetation changes and fire... |
| Tipo: Text |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00497/60848/64262.pdf |
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