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| Sibuet, Jean-claude; Ryan, William B.f.; Gustafson, Ted B.; Smith, S.m.. |
| The scientific party aboard Glomar Challenger collected geophysical data during DSDP Leg 47B, which commenced from Vigo, Spain, and terminated at Brest, France (Figure 1). Site 398 (40°57.6'N, 10°43.1'W), located just south of Vigo Seamount and about 95 miles West of Porto, Portugal, was drilled from 13 April 1976 to 9 May 1976. Table 1 gives satellite positions, distance (in nautical miles along the track) and the speed and course between successive navigation points. The positioning error along the trackline is approximately 1 nautical mile. Distances are shown (Figure 1) along the trackline every 50 nautical miles and annotated every 100 nautical miles. Time is marked by crosses every 2 hours and annotated every 4 hours. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/1979/publication-5241.pdf |
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| Sibuet, Jean-claude; Ryan, William B.f.. |
| DSDP Site 398 is located on the West Iberian passive continental margin, south of Galicia Bank, 20 km to the south of Vigo Seamount (Figure 1).The kinematic evolution of the Iberian plate is closely controlled by the relative motions of the African, European, and North American plates. A study based on magnetic data and land data was undertaken to better define the relative motion of Iberia with respect to these main plates (Sibuet et al; in preparation).Trapped between these plates, microcontinents such as Galicia Bank and Flemish Cap (located between Iberia and North America) assumed their own relative motions with respect to Iberia and North America during the early evolution of the North Atlantic.Consequently, the initial oceanic circulation between... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/1979/publication-5269.pdf |
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| Melguen, Marthe; Bolli, Hans M.; Ryan, William B.f.; Foresman, James B.; Hottman, William E.; Kagami, Hideo; Longoria, José F.; Mc Knight, Brian K.; Natland, James; Proto Decpia, Franca; Siesser, William G.. |
| The evolution of the sedimentary facies in the southeast Atlantic Ocean since the Cretaceous is strongly correlated to the structural history of this ocean. Since the first observations of Wegener (1929) about the continental drift, numerous authors (Bullard et al., 1965 ; Almeida and Black, 1967 ; Hurley et al., 1967 ; Hurley, 1968 ; Reyment and Tait, 1972 ; Krommelbein and Wenger, 1966 ; Maack, 1969) have confirmed the hypothesis of the separation of both continents, Africa and South America. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1975 |
URL: http://archimer.ifremer.fr/doc/1975/publication-5090.pdf |
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| Sibuet, Jean-claude; De Cahrpal, Olivier; Montadert, Lucien; Ryan, William B.f.. |
| The morphology of the Western Iberian Continental margin is the result of two main tensional episodes dated Permian-Lias and Upper Jurassic-Lower Cretaceous. Locally, at the level of D.S.D.P. site 398, this second episode is dated Barremian to Uppermost Aptian. A limited oceanic opening probably occurred in Middle Jurassic time between these two tensional episodes. During Lower Cretaceous, there was no relative movement between North America and Iberia. Seafloor spreading began again in Uppermost Aptian and has continued to the present day. The paleodepth for site 398 should have been around two kilometers in Lower Cretaceous after the last movements of subsidence and tilting of blocks associated with the so-called Upper Jurassic-Lower Cretaceous tensional... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1978 |
URL: http://archimer.ifremer.fr/doc/1978/publication-5235.pdf |
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| Major, Candace O.; Goldstein, Steven L.; Ryan, William B.f.; Lericolais, Gilles; Piotrowski, Alexander M.; Hajdas, Irka. |
| The Black Sea was an inland lake during the last ice age and its sediments are an excellent potential source of information on Eurasian climate change, showing linkages between regionally and globally recognized millennial-scale climate events of the last deglaciation. Here, we detail changes from the last glacial maximum (LGM) through the transition to an anoxic marginal sea using isotopic (strontium and oxygen) and trace element (Sr/Ca) ratios in carbonate shells, which record changing input sources and hydrologic conditions in the basin and surrounding region. Sr isotope records show two prominent peaks between similar to 18 and 16 ka BP cal, reflecting anomalous sedimentation associated with meltwater from disintegrating Eurasian ice sheets that... |
| Tipo: Text |
Palavras-chave: Sea level changes; Black Sea; Deglaciation; Glaciation; Palaeoclimate; Palaeoceanography. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2006.pdf |
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| Nesteroff, Wladimir D.; Ryan, William B.f.; Hsu, Kenneth J.; Pautot, Guy; Wezel, Forese C.; Lort, Jennifer M.; Cita, Maria B.; Maync, Wolf; Stradner, Herbert; Dumitrica, Paulian. |
| Examination of the GLOMAR CHALLENGER cores in the Mediterranean Sea (Leg 13) enables us to distinguish three main lithological units in the Neogene series. The lower unit is composed of blue marls with a poor, or dwarfed, fauna. The marls are of Langhian, Serravalian and Tortonian age, and are very similar to the blue marls of the same age known on land (in the Rhône basin, Vienna Basin, the Panonic Basins, etc.). This suggests that the Vindobonian Tethys received a uniform type of sedimentation. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1972 |
URL: http://archimer.ifremer.fr/doc/1972/publication-5434.pdf |
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