Grain size determination of IODP Site 374-U1523 ...

• Main Author: Gales, Jenny A
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Antarctica; grainsize; IODP; IODP Exp. 374; U1523; Event label; Latitude of event; Longitude of event; Date/Time of event; Date/Time of event 2; Elevation of event; Sample code/label; DEPTH, sediment/rock; Sand; Silt; Clay; Volume moment mean diameter; Gravel; Mud; Drilling/coring; DSDP/ODP/IODP sample designation; IODP Depth Scale Terminology; Grain size, Mastersizer 2000, Malvern Instrument Inc.; Exp374; Joides Resolution; Iselin Bank; Ross Sea; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.960626; https://doi.pangaea.de/10.1594/PANGAEA.960626

Cores U1523A, U1523B and U1523E were taken from the Iselin Bank, eastern Ross Sea, Antarctica (74°9.02′S, 176°47.70′W) in 828 m water depth during International Ocean Discovery Program Expedition 374. Grain size analysis of the <1 mm fraction was measured every 15 cm at the University of Plymouth using a Malvern Mastersizer 2000 laser particle size-analyser. Subsamples (5 mm³) were dry sieved, 10% H2O2 solution added and samples were left overnight in a water bath at 60°C. 10% solution of sodium hexametaphosphate was added and ultrasound applied before measurements were made. The coarse fraction (>1 mm) was measured by dry sieving 1 cm³ subsamples using a nested stack at half-phi intervals (1.4 mm - 16 mm). Grain-size data is presented as the sand%, silt%, clay% and gravel%, sand%, mud% fractions according to the following grain-size intervals: very fine-coarse sand (1 mm - 62.5 μm), silt (62.5 - 4 μm) and clay (<4 μm). The volume mean grain-size diameter is also presented (D4,3). ...