AIPG SD Section Summer 2022 Field Trip to the Missouri River near Chamberlain, South Dakota
Geology and Paleontology of the Western Interior Seaway near Chamberlain, SD

Sunday, July 31, 2022

This field trip focused on Cretaceous stratigraphic units exposed along the Missouri River near Chamberlain, SD, along with their associated paleontological characteristics and taxa. The trip was led by Dr. Darrin Pagnac, Curator of Vertebrate Paleontology at the Museum of Geology at the South Dakota School of Mines & Technology. The trip was attended by 14 members and family/friends of the SD Section and consisted of a four-hour roundtrip pontoon ride from the Marina at Arrowwood Cedar Shore Resort & Conference Center in Oacoma, SD, to exposures of Cretaceous strata in the area as shown in the story map at: https://storymaps.arcgis.com/stories/ce92b7d5079e40d9858290a39bb400c0 

Exposures of the Sharon Springs Formation including, from bottom to top, the Burning Brule, Boyer Bay, and Nicholas Creek members.

 
Oxidized conglomerate atop the Niobrara Fm at Stop #6

Exploring exposures along the shore of Lake Francis Case in central South Dakota

Dr. Darrin Pagnac (left), Curator of Vertebrate Paleontology at the South Dakota School of Mines & Technology, discusses Cretaceous geology with field trip participants.

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