Geologic Systems, Sequences, and Plays Ordovician System

Ordovician
Play	Associated with...
Red River	Williston Basin
Truncated Paleozoic	Sioux Arch
Viola Oil and Gas	Cambridge Arch - Central Ks Uplift
Simpson Oil and Gas	Cambridge Arch - Central Ks Uplift
Early Ordovician/Cambrian Arbuckle	Cambridge Arch - Central Ks Uplift
Viola Oil and Gas	Salina Basin
Simpson Oil and Gas	Salina Basin
Early Ordovician/Cambrian Arbuckle	Salina Basin
Viola Oil and Gas	Nemaha Uplift
Simpson Oil and Gas	Nemaha Uplift
Early Ordovician/Cambrian Arbuckle	Nemaha Uplift
Viola Oil and Gas	Forest City Basin
Simpson Oil and Gas	Forest City Basin
Early Ordovician/Cambrian Arbuckle	Forest City Basin
Viola Oil and Gas	Anadarko Basin
Simpson Oil and Gas	Anadarko Basin
Uppermost Arbuckle	Anadarko Basin
Viola Oil and Gas	Sedgwick Basin
Simpson Oil and Gas	Sedgwick Basin
Early Ordovician/Cambrian Arbuckle	Sedgwick Basin
Pre-Woodford Paleozoic	Cherokee Platform