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janis d treworgy
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The Illinois Basin, a tidally and tectonically influenced ramp during mid-Chesterian time
Janis D. Treworgy · Illinois State Geological Survey
20 sayfa · 1988
Geology / Illinois Basin / Stratigraphic Geology
Stratigraphic and structural framework along the 11:30 o'clock cross section in the Illinois Basin
Janis D. Treworgy · Illinois State Geological Survey
13 sayfa · 1994
Stratigraphic Geology / Structural Geology



