Authigenic phillipsite in lacustrine sediments, Taylor Valley, Antarctica

Abstract

Abstract During a time of more extensive alpine glaciation, small lakes existed at two locations on bedrock benches far above the floor of Taylor Valley. One of the lakes was dammed by an expanded alpine glacier, but the other was located in a bedrock basin which probably has been re-flooded on a number of occasions. Local volcanic activity produced vitric ash which was washed into the lakes and subsequently altered to the zeolite phillipsite in the alkaline, saline lake waters.