Physical properties and abundance of diatoms of the ANDRILL AND1-1B drill core ...

• Main Authors: Konfirst, Matthew Alan, Kuhn, Gerhard, Monien, Donata, Scherer, Reed P
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: D-ANDRILL; Drilling/drill rig; MIS; McMurdo Station; Antarctic Geological Drilling ANDRILL; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Arctic; Antarctic; Austral; Ross Island; Ross Ice Shelf; McMurdo Ice Shelf; Hut Point; Hut Point Peninsula; Antarc*; Antarctica; Ice Shelf; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.757323; https://doi.pangaea.de/10.1594/PANGAEA.757323

In the austral summer of 2006/7 the ANDRILL MIS (ANtarctic geological DRILLing- McMurdo Ice Shelf) project recovered a 1285 m sediment core from beneath the Ross Ice Shelf near Hut Point Peninsula, Ross Island, Antarctica in a flexural moat associated with the volcanic loading of Ross Island. Contained within the upper ~600 m of this core are sediments recording 38 glacial to interglacial cycles of Early Pliocene to Pleistocene time, including 13 discrete diatomite units (DU). The longest of these, DU XI, is ~76 m thick, contains two distinct unconformities marked by layers of volcanic brecciated sands, and has been assigned an Early to Mid-Pliocene age (5-3 Ma). A detailed record (avg. sample spacing of 33 cm) of the siliceous microfossil assemblages have been generated for DU XI and used in conjunction with geochemical and sedimentological data to subdivide DU XI into four discrete subunits of continuous sedimentation. Within each unit, changes in diatom assemblages have been correlated with the d18O ... : Supplement to: Konfirst, Matthew Alan; Kuhn, Gerhard; Monien, Donata; Scherer, Reed P (2011): Correlation of Early Pliocene diatomite to low amplitude Milankovitch cycles in the ANDRILL AND-1B drill core. Marine Micropaleontology, 80(3-4), 114-124 ...