Embedded Files
Page in progress
SAMPLING PARTY
SAMPLING PARTY
Sediment subsamples have been collected at every 5-cm along the whole length of Core LB21-3-IRIDYA-02PC for a total of 104 samples.
About 4 cc of sediments have been collected with plastic syringes, placed in glass vials and weighted to determine the sediment wet bulk density. The glass vials will be left in an oven at 105°C during 24 h to determine the sediment porosity, water content, and dry bulk density.
Part of these sediments will be analysed for textural characteristics, and geochemical, mineralogical (XRD) composition.
X-RADIOGRAPH
On X-ray images, deposition from sediment-laden meltwater efflux appears as closely alternating sand or silt layers (dark gray) and clay layers (light gray), known as plumites. Coarse debris transported and released by icebergs (ice-rafted debris) is visible as dark spots on the radiographs.
DIGITAL PHOTOGRAPHY
The corresponding photograph of the fresh sediment surface does not reveal the delicate depositional structures visible in the X-rays, except for the presence of ice-rafted debris (IRD), which appears as dark spots.
Page updated
Report abuse