Sand geochemistry on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Sprovieri, Mario; Bellanca, Adriana; Neri, Rodolfo (2001): Bulk geochemistry of the sand fraction from CRP-3 (Victoria Land Basin, Antarctica): Evidence of provenance and Milankovitch climaric fluctuations. Terra Antartica, 8(4), 551-560

A total of 167 samples distubuted throughout the CRP-3 drillhole from 5.77 to 787.68 mbsf and representing fine to coarse sandstones have been analysed by X-ray fluorescence spectrometry (XRF) Bulk sample geochemistry (major and trace elements) indicates a dominant provenance of detritus from the Ferrar Supergroup in the uppermost 200 mbsf of the core. A markedly increased contribution from the Beacon sandstones is recognized below 200 mbsf and down to 600 mbsf. In the lower part of CRP-3, down to 787.68 mbsf, geochemical evidence for influxes of Ferrar materials is again recorded. On the basis of preliminary magnetostratigraphic data reported for the lower 447 mbsf of the drillhole, we tentatively evaluated the main periodicities modulating the geochemical records. Our results identify a possible influence of the precession, obliquity and long-eccentricity astronomical components (21, 41, and 400 ky frequency bands) on the deposition mechanisms of the studied glaciomarine sediments.

Metadata Access
Creator Sprovieri, Mario; Bellanca, Adriana; Neri, Rodolfo
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2001
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Collection of Datasets
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (163.719 LON, -77.006 LAT); Ross Sea
Temporal Coverage Begin 1999-10-09T00:00:00Z
Temporal Coverage End 1999-11-19T00:00:00Z