Magnetic susceptibility and documentation of sediment cores from the Antarctic Peninsula Pacific margin ...

• Main Authors: Lucchi, Renata G, Rebesco, Michele, Camerlenghi, Angelo, Busetti, Martina, Tomadin, Luciano, Villa, Giuliana, Persico, Davide, Morigi, Caterina, Bonci, M C, Giorgetti, Giovanna
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2007
• Subjects: Gravity corer; SEDANO-II; Explorer; Antarc*; Antarctic; Antarctic Peninsula
• Online Access: https://dx.doi.org/10.1594/pangaea.671563; https://doi.pangaea.de/10.1594/PANGAEA.671563

The effects of glaciation on sediment drifts is recognised from marked sedimentary facies variation in deep sea cores taken from the continental rise of the Antarctic Peninsula Pacific margin. Nineteen sediment cores were visually described, logged for magnetic susceptibility, and X-radiographed. About 1000 analyses were performed for grain size, clay minerals and biostratigraphy (foraminifera, nannofossils and diatoms). Four sediment types associated with distinct sedimentary processes are recognised based on textural/compositional analysis. (1) Hemipelagic mud forms the bulk of the interglacial sediment, and accumulated from the pelagic settling of bioclasts and ice-rafted/windtransported detritus. (2) Terrigenous mud forms the bulk of the glacial sediment, and accumulated from a combination of sedimentary processes including turbidity currents, turbid plumes, and bottom current reworking of nepheloid layers. (3) Silty deposits occurring as laminated layers and lenses, represent the lateral spillout of ... : Supplement to: Lucchi, Renata G; Rebesco, Michele; Camerlenghi, Angelo; Busetti, Martina; Tomadin, Luciano; Villa, Giuliana; Persico, Davide; Morigi, Caterina; Bonci, M C; Giorgetti, Giovanna (2002): Mid-late Pleistocene glacimarine sedimentary processes of a high-latitude, deep-sea sediment drift (Antarctic Peninsula Pacific margin). Marine Geology, 189(3-4), 343-370 ...