1988 Black Hills Field Trip

Petrology presentation by Darrell Nodland, Bridal Veil Falls,
Spearfish Canyon, South Dakota.

(Photo by D.P. Schwert, May 3, 1988)

1989 North Shore Field Trip

Group discussion on the banded troctolites of the Duluth Complex,
Thompson Hill rest area, Duluth, Minnesota.

(Photo by D.P. Schwert, May 5, 1989)

1989 North Shore Field Trip

Taking notes on the Vermilion Fm (Archean), Pike Bay,
near Tower, Minnesota.

(Photo by A.C. Ashworth)

1989 Field Geology Field Trip

(Photo by A.C. Ashworth)