After 30 minutes of working the tool a decision was made to log upward. Elan Bank, flanked on three sides by the oceanic Enderby Basin, is a large western salient of the main Kerguelen Plateau. Ma volcanic pulses on the southern and central Kerguelen Plateau, respectively. Sedimentary objectives at Site 1137 were to determine sequence facies, to define the ages of seismic sequence boundaries, to estimate the duration of possible subaerial and shallow marine environments, to obtain minimum estimates for basement age, and to determine the paleoceanographic history of this high latitude site. As discussed below, we largely achieved our goals at Site 1137.
Some intervals contain diatoms or foraminifers.
Natural gamma-ray intensities are relatively high in the glauconitic sand. All basement units are clearly distinguishable in downhole logging data. Relatively good core recovery and the high quality of the logging results enable us to constrain true thicknesses of the basement units through core-log integration. Velocities within lava flows correlate inversely with degree of alteration estimated from visual inspection. We interpret each basaltic unit to be a single lava flow.