Lithostratigraphy determined from downhole logs in the AND-2A borehole ...

• Main Authors: Hunze, Sabine, Schröder, Henning, Kuhn, Gerhard, Wonik, Thomas
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2014
• Subjects: Drilling/drill rig; SMS; McMurdo Station; Antarctic Geological Drilling ANDRILL; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Austral; McMurdo Sound; Victoria Land; Antarc*; Antarctica; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.834632; https://doi.pangaea.de/10.1594/PANGAEA.834632

During the 2007-2008 austral spring season, the ANDRILL (Antarctic Drilling project) Southern McMurdo Sound Project recovered an 1138-m-long core, representing the last 20 m.y. of glacial history. An extensive downhole logging program was successfully carried out. Due to drill hole conditions, logs were collected in several passes from the total depth at 1138.54 m below seafloor (mbsf) to 230 mbsf. After data correction, several statistical methods, such as factor analysis, cluster analysis, box-and-whisker diagrams, and cross-plots, were applied. The aim of these analyses was to use detailed interpretation of the downhole logs to obtain a description of the lithologies and their specific physical properties that is independent of the core descriptions.The sediments were grouped into the three main facies, diamictite, mudstone and/or siltstone, and sandstone, and the physical properties of each were determined. Notable findings include the high natural radioactivity values in sandstone and the high and low ... : Supplement to: Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas (2013): Lithostratigraphy determined from downhole logs in the AND-2A borehole, southern Victoria Land Basin, McMurdo Sound, Antarctica. Geosphere, 9(1), 63-73 ...