Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica ...

• Published in: Environmental Microbiology
• Main Authors: Armienti, Pietro, Messiga, Bruno, Vannucci, R
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1998
• Subjects: Core wireline system; CRP-1; Sampling/drilling ice; Cape Roberts Project CRP; Antarc*; Antarctica; antartic*; Ross Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.510729; https://doi.pangaea.de/10.1594/PANGAEA.510729

Thirty-nine medium and fine grained sandstones from between 19,26 and 147,23 mbsf in the Cape Roberts-l core (CRP-1) were analysed for 10 major and 16 trace elements. Using whole-lock compositions, 9 samples were selected for analyses of mineral and glass grains by energy dispersive electron microscope. Laser-Ablation Mass-Spectrometry was used to determine rare earth elements and 14 additional trace elements in glass shards, pyroxenes and feldspars in order to examine their contribution to the bulk rock chemistry. Geochemical data reveal the major contribution played by the Granite Harbour Intrusives to the whole rock composition, even if a significant input is supplied by McMurdo volcanics and Ferrar dolerite pyroxenes McMurdo volcanics were studied in detail; they appeal to derive from a variety of litologies, and a dominant role of wind transpoitation from exposures of volcanic rocks may be inferred from the contemporary occurrence of different compositions at all depths. Only at 116.55 mbsf was a thin ... : Supplement to: Armienti, Pietro; Messiga, Bruno; Vannucci, R (1998): Sand provenance from major and trace element analyses of bulk rock and sand grains. Terra Antartica, 5(3), 589-599 ...