Petrology and geochemistry of the AND-1B Core

• Main Authors: Pompilio, Massimo, Dunbar, Nelia W, Gebhardt, Andrea Catalina, Helling, D, Kuhn, Gerhard, Kyle, Philip R, McKay, Robert M, Talarico, Franco M, Tulaczyk, S, Vogel, Susan A, Wilch, T
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA 2007
• Subjects: AND1-1B; AND-1B; ANDRILL; Antarctic Geological Drilling; DRILL; Drilling/drill rig; McMurdo Ice Shelf; McMurdo Station; MIS; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158; Antarc*; Antarctic; Ice Shelf; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.858484; https://doi.org/10.1594/PANGAEA.858484

Petrologic descriptions will follow a division related to both grain size and lithology like that adopted in Cape Roberts investigation (Cape Roberts Science Team 2000, hdl:10013/epic.28287.d001, and references therein). First, we describe the petrology of the sand fraction of the core. Second, we report the distribution of clasts with diameter larger than 2 millimeter (mm) and the petrology of basement clasts. Third, we focus on the occurrence and petrology of McMurdo Volcanic Group sediments, which represent the largest component in the core. The final section continues with the compositional characterization of bulk sediments by continuous X-ray fluorescence measurement (XRF scan) integrated by carbonate geochemistry and concludes with the porewater geochemistry. All of these data will contribute to infer palaeoclimatic information and to understand provenance history of detritus, changes in depositional environment, and spatial and temporal evolution of magmatism in McMurdo Ice Shelf area.