Image ID: 10008913
Caption: Rounded gneissic erratic boulder lying on hyaloclastite breccia bedrock. The boulder has been transported by ice and was deposited in this position when the ice retreated. Boulders such as this can be dated using cosmogenic isotopes to determine when that ice retreated.
Keywords: Antarctica | scene, geology, field work, boulder
Location: Turtle Rock, 5km west of Mt Murphy, Marie Byrd Land
Season: 2005/2006
Photographer: Joanne Johnson
Image size (pixels): 2592 x 1944