1. Interpretive geologic map and supporting radiolarian data from the Angayucham Terrane, Coldfoot area, southern Brooks Range, Alaska [cartographic material] Yale Public content 1988. 2002-06-01T04:00:00Z. 2016-03-28T17:04:11Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Alaska and Brooks Range.