South Dakota Geological Resources

                  Field Trips (PS-244)

                      Sept. 3 and Sept. 18-20, 2009

                                       Howard J. Woodard - Instructor

                     (Double left click any thumbnail images to access regular sized images)

Thursday, September 3 (Field Trip #1)

1. Gravel Pit Operations (east of Brookings) 

2. Gravel Pit  - Glacier Meltwater Outwash Profile (west of White) 

3. Natural Spring (northwest of Astoria) 

4. Moraine Features (east of Clear Lake)  

5. Dakota Granite Quarry  (old and new), Office, and glacier pavement (east of Milbank)        

6 . Faceted and Grooved Granite Boulder line, glacial till (northwest of Corona)

7. Continental Divide (east of Brown's Valley, MN)

8.Lake Traverse - Big Stone Lake Glacier Meltwater outlet (northwest of Brown’s Valley, MN)

9. Prairie Coteau and Minnesota River Valley -Nicollet Tower (north of Sisseton)

10. Prairie Potholes – Glacier Lakes (south of Waubay)

11. Esker (south of  Oakwood Lake)

12. Ice-Walled Lake Sediment Deposits (south of Oakwood Lake)

13. City Well Field in Shallow Aquifer (north of Brookings) 

Friday, September 18 (Field Trip #2)

1. Oahe Dam (north of Pierre)

2a.  Pierre Formation Erosional Features

3. Exposed Igneous Intrusion (Laccolith) - Bear Butte (Bear Butte State Park east of Sturgis)

4. Sinkhole in Spearfish Formation - Gore Buffalo Jump (west of Beulah, WY)        

Saturday, September 19

5. a. Bridal Veil Falls (Spearfish Canyon Road south of Spearfish)  

    b. Roughlock Falls  (Spearfish Canyon Road near Savoy)

6.    PreCambrian Metamorphic Rocks - slate (Lead)

7. Great Unconformity - PreCambrian-Cambrian Deadwood Fm. Contact (Lead)

8. Former Homestake Open Pit Gold Mine, Igneous intrusions, slumping (Lead)       

9. Pactola Lake - Flood Control Reservoir (US385 east of Silver City)

10. Harney Peak Granite - Contact of Igneous Intrusion with basement Metamorphic Fm. (Mt. Rushmore National Monument)

11. Carbonate Solubility - Rushmore Cave (east of Keystone)

12. Tilting Cretaceous Strata  (Dinosaur Hill, Rapid City)

Sunday, September 20

13. White River Formation Members (Badlands National Monument)  

    Sharps/Brule Formation:

   Chadron Formation:

    Models/Fossils and Fault Visible at the Visitors Center:

2b. Pierre Formation - shale, gypsum, fossils, Mn toxicity, bentonite-weathered volcanic ash (west of Oacoma)

14. Niobrara Formation - foraminifera chalk beds (west of Oacoma, Oahe reservoir)

15. a. Sioux Formation - Quartzite, ripples, glacier impact marks (Falls Park, Sioux Falls) 

      b. Quartzite Buildings and Quartzite Quarry (Dell Rapids)