Paleozoic

Craton

• Major transgressions and regressions
  

Orogenic Belts

• East
  
  - Formation of Appalachian Mountains
  - Assemblage of Pangaea
  
• West
  
  - Subduction Zone
  

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Wind River Canyon, WY; Cambrian - Mississippian Strata

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Cratonic Sequences

• Major transgressions and regressions on the craton, resulting from eustatic sea level fluctuations.
  

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Epeiric Seas

• Broad shallow seas that covered parts of the craton
  

Sloss Cratonic Sequences

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Figure 11.3, p. 298

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Sauk Sequence

• Upper Precambrian - Lower Ordovician
  
• Grand Canyon Sequence
  
  - Tapeats SS - Quartzarenite
  - Bright Angel Shale
  - Muav Limestone
  - Unconformity
  

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Figure 11.5, p.302

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• Ohio Subsurface
  
  - Mount Simon SS
  - Eau Claire Fm
  - Knox Dolomite
  - Knox Unconformity
  

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Sauk Sequence
Wind River Canyon,WY

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PreCambrian Granite and Cambrian Flathead SS

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skolithos burrows

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Flathead SS and Gros Ventre Sh

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Gros Ventre Sh

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Ordovician Gallatin Fm.

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flat pebble conglomerate

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last updated 1-11-98

All original material copyright (c) 1998 by Annabelle Foos. All rights reserved.