Geology by county Explore geologic phenomena by county. Use the drop down list below to find content related to a given county. Categories +Counties (58) +Benson (1) +Billings (5) +Bottineau (3) +Burleigh (3) +Dickey (2) +Dunn (1) +Emmons (1) +Foster (1) +Golden Valley (3) +Grand Forks (1) +Grant (1) +Griggs (3) +Kidder (1) +McKenzie (3) +McLean (3) +Mercer (2) +Morton (1) +Mountrail (2) +Nelson (1) +Pierce (1) +Rolette (1) +Sheridan (2) +Sioux (2) +Slope (4) +Stark (2) +Stutsman (1) +Traill (2) +Walsh (1) +Ward (1) +Wells (2) +Williams (1)