1990 Southeastern Minnesota Field Trip

(Photo by A.C. Ashworth)

1990 Black Hills Field Trip

Group discussion on the Bullion Creek Formation,
Theodore Roosevelt National Park, Medora, N.D.

(Photo by D.P. Schwert)

1990 Black Hills Field Trip

1990 group photo, taken at Painted Canyon overlook,
Theodore Roosevelt National Park, Medora, N.D.

(Photo by A.C. Ashworth)

1990 Eastern North Dakota Field Trip

Taking notes at Mirror Pool, near Walcott, N.D.

(Photo by A.C. Ashworth)

1991 Black Hills Field Trip

Petrology talk by Steve Adamek (assisted by Darrell Nodland)
at Devils Tower, Wyoming.

(Photo by D.P. Schwert, May 7, 1991)

1991 Black Hills Field Trip

1991 group photo, taken at top of Bear Butte near Sturgis, South Dakota.

(Photo by D.P. Schwert, May 7, 1991)

1991 Black Hills Field Trip

Group photo, near Belle Fourche, South Dakota.

(Photo by D.P. Schwert, May 8, 1991)

1992 North Shore Field Trip

Petrology talk by Leigh Ann Frydenlund (assisted by Debra Mracek)
at Lester River, Duluth, Minnesota.

(Photo by D.P. Schwert, May 3, 1992)

1992 North Shore Field Trip

1992 group photo, at Tettegouche State Park, Minnesota.

(Photo by D.P. Schwert, May 4, 1992)

1992 Eastern North Dakota Field Trip

(Photo by A.C. Ashworth)