1. Surficial geologic map of the Tyonek B-4 quadrangle, south-central Alaska Yale Public content 1994. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Alaska, Matanuska-Susitna Borough, and Kenai Peninsula Borough.