Subject search: "Geology, Stratigraphic — Ordovician."
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The American Upper Ordovician StandardThe American Upper Ordovician Standard, BookVII. Stratigraphy and Petrology of the Cynthiana and Eden Formations of the Ohio Valley
by Weiss, Malcolm P.Regional Diagenetic Patterns in the St. Peter SandstoneRegional Diagenetic Patterns in the St. Peter Sandstone, BookImplications for Brine Migration in the Illinois Basin
by Pitman, Janet K.