1. Tongass National Forest, Ketchikan, Alaska 99901, USA
2. Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA
3. Tongass National Forest, Thorne Bay, Alaska 99901, USA
4. Department of Anthropology, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA
5. Tongass National Forest, Petersburg, Alaska 99833, USA
6. Department of Geology, University at Buffalo, Buffalo, New York 14209, USA