In the November issue of GSA Bulletin, Lewis et al. report on till stratigraphy constrained by Ar/Ar ages of volcanic ash from the Olympus Range in the Dry Valleys. According to the article till generated by wet-based glaciers is older than sublimation till from dry-based glaciers nearby. The ages on the ashes are used to determine the age of the transition.
An article discussing the drilling technology and preliminary scientific results of the McMurdo Ice Shelf drilling of ANDRILL can be found in the printed issue of Geotimes. Currently ANDRILL is drilling a second hole in Southern McMurdo Sound. Check http://www.andrill.org/ for science updates (from Oct. 15 approximately).