Introduction to the Field Trip
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by Raymond R. Anderson |
1 |
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Review of the Geology of the Fort Dodge Formation
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by Raymond R.
Anderson, Robert M. McKay, and Robert R. Cody |
3 |
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Introduction
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3
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Physiography of the Fort Dodge
Area
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3
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Geology of the Fort Dodge
Formation
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4
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Basal Conglomerate
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6
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Gypsum Unit
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8
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Soldier Creek Beds
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15
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Age of the Fort Dodge Formation
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21
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Jurassic Strata of the
Midcontinent
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23
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Origin of the Fort Dodge
Formation
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24
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Erosion and Preservation of the
Fort Dodge Formation
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26
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Fort Dodge Graben
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27
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References
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29 |
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Quaternary Stratigraphy of the Fort Dodge, Iowa, Area: United States
Gypsum Co. North Welles Quarry
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by E. Arthur Bettis
III and Deborah J. Quade |
31 |
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National Gypsum Co.,
Kaufman-George Pit, Fort Dodge, Iowa
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31
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Insect Remains: A Faceted Eye’s
Perspective on the Advance of the Des Moines Lobe into North-Central Iowa
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34
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Pollen and Plant Macrofossils
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39
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Compositional Differences Between Jurassic and Cretaceous Sandstones
of Western Iowa, with Comments on the Controlling Factors
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by Greg A.
Ludvigson |
45 |
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Gypsum Mining in the Area of Fort Dodge, Iowa
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by Robert R.
Cody, Raymond R. Anderson, and Robert M. McKay |
53 |
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Uses of Gypsum in Today’s Society
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by Robert D.
Cody and Anita M. Cody |
59 |
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Field Trip Stops |
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Stop 1:
“Soldier Creek beds” at 5th Avenue North Section |
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by Raymond R. Anderson
and Robert M. McKay |
67 |
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Stop 2: Fort Dodge Fault Zone at Soldier Creek |
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by Raymond R. Anderson and Robert M. McKay |
73 |
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Stop 3. Soldier Creek Beds and Fort Dodge Gypsum at Snell Park |
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by Raymond R. Anderson
and Robert M. McKay |
79 |
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Stop 4. Quaternary Materials Overlying the Fort Dodge Gypsum at the U.S Gypsum Quarries |
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by Deborah Quade |
81 |
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Stop 5: Fort Dodge Gypsum at the U.S. Gypsum
Collins Quarry |
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by Raymond R.
Anderson, Robert M. McKay, and Larry Pawlosky |
83 |
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Stop 6. Mining Restoration at the U.S. Gypsum South Welles Quarry |
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by Raymond R.
Anderson, Robert M. McKay, and Larry Pawlosky |
85 |
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Stop
7. Abandoned Underground Mine Adits
at the U.S. Gypsum North Welles Quarry
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by Raymond R.
Anderson, Robert M. McKay, and Larry Pawlosky |
87 |
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Stop 8:
Tour of the U.S. Gypsum Wallboard Plant |
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by Raymond R. Anderson,
Robert M. McKay, and Larry Pawlosky |
89 |