Bill Patton and colleagues examining rocks along the Amur River

Bill Patton and colleagues examining the rocks along the Amur River in the Russian Far East as part of the United States (US) and the Union of Soviet Socialist Republics (USSR) scientific exchange agreement to investigate geologic connections between Alaska and north-eastern Russia (1975). Left to right: Leonid Karasik, Academician Yuri Kosygin, Mike Churkin, Leonid Parfenov, and Bill Patton.