4,076 research outputs found
RRS Discovery Cruise 111, leg 2, 8 July - 30 July 1980. Geophysical studies of the continental margin around the Grand Banks
No full textRRS "Discovery" Cruise 90, 20 January - 3 March 1978. Sonar imaging of the European- North African continental margin
No full textRRS Discovery Cruise 74, leg 2, 15 - 26 September 1975. Seismic reflection profiling across the continental margin in the South West Approaches (North Biscay)
No full textRRS Shackleton Cruise 6/76, 27 October - 18 November 1976. Geophysical studies of south west Biscay.
No full textRRS "Discovery" Cruise 101, 10 April - 6 May 1979. Geophysical investigations in the SW Indian Ocean and around the northern Mascarene Plateau.
No full textRRS Discovery Cruise 60, 26 February - 22 March 1974. Seismic reflection profiling on the Rockall Plateau and in the South Western approaches
No full textGC-FID data of biocatalytic esterification reactions & NMR data of lignin characterization
No full textTabulated chromatographic data (GC-FID) from butyl butyrate esterification reactions. 13C and 31P NMR data from pine kraft lignin (BIOPIVA 100) and cationic pine kraft lignin. A list of sample code identifiers with their descriptions is available upon request from the author.<br
DE "Vickers Voyager" and "Pisces III" June - July 1973. Submersible investigations of the geology and benthos of the Rockall Bank
No full textOrbitally induced oscillations in the East Antarctic ice sheet at the Oligocene/Miocene boundary
No full textBetween 34 and 15 million years (Myr) ago, when planetary temperatures were 3–4 °C warmer than at present and atmospheric CO2 concentrations were twice as high as today, the Antarctic ice sheets may have been unstable. Oxygen isotope records from deep-sea sediment cores suggest that during this time fluctuations in global temperatures and high-latitude continental ice volumes were influenced by orbital cycles. But it has hitherto not been possible to calibrate the inferred changes in ice volume with direct evidence for oscillations of the Antarctic ice sheets. Here we present sediment data from shallow marine cores in the western Ross Sea that exhibit well dated cyclic variations, and which link the extent of the East Antarctic ice sheet directly to orbital cycles during the Oligocene/Miocene transition (24.1–23.7 Myr ago). Three rapidly deposited glacimarine sequences are constrained to a period of less than 450 kyr by our age model, suggesting that orbital influences at the frequencies of obliquity (40 kyr) and eccentricity (125 kyr) controlled the oscillations of the ice margin at that time. An erosional hiatus covering 250 kyr provides direct evidence for a major episode of global cooling and ice-sheet expansion about 23.7 Myr ago, which had previously been inferred from oxygen isotope data (Mi1 event)
RRS "Shackleton" Cruise 6/79: July 7th - July 31st 1979. Seismic studies of the continent-ocean transition in North Biscay
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