1. Geology of Southern Oklahoma
Group #6
Ronnie Miller
Amy Miller
Kim Scott
Kristi Birdsong
Hannah Benson
Amy Benson
Reina Womack
Tammara Cook
Brenda Wright
Lee Vertrees

2. Sedimentary Rocks of Bryan County

3. Quaternary Period Alluvium 20-30 ft deep
Sediment that will eventually form conglomerate rocks
10,000 years –present Qt

4. Cretaceous Period

5. Dexter Sandstone 85-90 ft thick Kwd Shallow ocean formation
Natural Aquifer
Yellow brown, iron containing sedimentary rock

6. Bennington Limestone 7-13 feet thick Kb Deep Ocean Formation
Hard limestone w/fossil
Blue-gray, very dense, fossilized limestone

7. Fossilized Bennington Limestone
7-13 feet thick Kb
Deep Ocean Formation
Hard limestone w/fossil
Blue-gray, very dense, fossilized limestone

8. Pawpaw Sandstone 40-45 feet thick Kbp
Youngest of the Bokchito Formation

9. Evidence of Sandstone Sandstone is permeable to water. Natural Aquifer
Plant Growth
Willow Trees
Mimosa Tres
Cat tails
Horse tail rush

10. Soper Limestone 0-2 feet thick Kbs Deep Ocean Deposit
Gray, fossilized limestone

11. Caddo Formation 150-160 feet thick Kc
Alternating layers of limestone and shale
Cream colored limestone, gray colored shale

12. Kiamichi Formation 30-40 feet thick Kk Deep Ocean Formation
Dark-gray to black limestone
Fossilized with ammonites

13. Geology of Johnston County

14. Antlers Sandstone 250-600 feet thick Ka
Poorly cemented, unfossilized, white to yellow sandstone
Used by Cardinal Glass in Durant
Also used as frac sand by oil companies

15. Wapanuka Formation Limestone and Shale interbedded
Shallow Ocean formation
Calcium Carbonate from coral reefs
Crinoids fossils abundant

16. Springer Formation Limestone on the ground
Lichens tend to grow on limestone giving them a darker appearance
Found at the edge of the Arbuckle-Simpson Aquifer

17. Woodford Shale Dark colored shale Presence of phosphate nodules
Natural gas deposits are found in Woodford shale
MDsw
Deep Ocean Deposit
million years

18. Dolomite Thick deposit of Magnesium Carbonate Ocm
million years

19. Granodiorite
P€gr
Medium-grained hornblende-biotite

20. Troy Granite
P€tr
Medium-grained pink granite

21. Tishomingo Granite
1.37 billion years
P€ti

22. Granitic Gneiss
1.39 billion years
P€gg

23. Trip Through the Arbuckles

24. Anticlines
Form when convergent forces in the earth fold rock layers upward.
Causing the oldest layers at the core with younger layers progressing outward from the core

25. Synclines
Form when convergent forces in the earth fold rock layers downward.
Causing the oldest layers at the core with younger layers progressing outward from the core

26. Faults
Occur where forces inside earth have caused layers to break and fall at different angles.

27. Collins Ranch Conglomerate
IPcr
3000 ft thick est.

28. Woodford Shale
MDw
Blake shale

29. Viola Group Limestones that form steep resistant ridges Ov
684 feet thick

30. Oil Creek Formation
Basal Sandstone
Ooc
747 ft thick

31. Joins Formation Thin bedded, fossiliferous light gray limestone Oj
294 feet thick

32. West Spring Creek Limestone
284 ft thick Ow
Mostly gray to tan limestones

33. Butterly Dolomite
Oldest member of the upper Arbuckle group Ob

34. Sylvian Shale Mostly olive green plastic to fissile clay shale Os
At contact zone with Keel Limestone of the Hunton Group

35. Kindblade Formation
Gray, fine grained limestone Ok
1440 feet thick

36. Royer Dolomite
Only Cambrian sample
Pink to gray massive dolomite
Cry