Relief surface of a 6X6km area around the Horse Butte Basin sites outside of Yellowstone. Slide the animation bar at the bottom all of the way to the right to display a bedrock map and all of the way to the left for an aerial photo (taken 8/7/2013). Elevation range 158m. Bedrock symbols- Qaf Alluvial fan deposit, Qgo Glacial outwash deposit, Qgt Glacial till, Thr Huckleberry Ridge Tuff (undivided), XAms Mica schist, XAq Quarzite, Ag Granite gneiss. Geologic map modified from O’Neill, J. M. and Christiansen, R. L., 2002. Geologic map of the Hebgen Lake quadrangle, Beaverhead, Madison, and Gallatin counties, Montana, Park and Teton counties, Wyoming, and Clark and Fremont counties, Idaho. Montana Bureau of Mines and Geology. Aerial imagery from ESRI. DEM from USGS.
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