Analysis of rocks from Shackleton Range ...

• Main Authors: Höfle, Hans-Christian, Buggisch, Werner
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: Geological sample; Antarc*; Antarctica; Ice Sheet; Slessor Glacier
• Online Access: https://dx.doi.org/10.1594/pangaea.767443; https://doi.pangaea.de/10.1594/PANGAEA.767443

Studies were made of the glacial geology and provenance of erratic in the Shackleton Range during the German geological expedition GEISHA in 1987/88, especially in the southern and northwestern parts of the range. Evidence that the entire Shackleton Range was once overrun by ice from a southerly to southeasterly direction was provided by subglacial erosional forms (e.g. striations, crescentic gouges, roches moutonnées) and erratics which probably orriginated in the region of the Whichaway Nunataks and the Pensacola Mountains in the southern part of the range. This probably happened during the last major expansion of the Anarctic polar ice sheet, which, on the basis of evidence from other parts of the continent, occurred towards the end of the Miocene.Till and an area of scattered erratics were mapped in the northwestern part of the range. These were deposited during a period of expansion of the Slessor Glacier in the Weichselian (Wisconsian) glacial stage earlier. This expansion was caused by blockage of the ... : Supplement to: Höfle, Hans-Christian; Buggisch, Werner (1995): Glacial geology and petrography of erratics in the Shackleton Range, Antarctica. Polarforschung, 63(2/3), 183-201 ...