Browsing by Subject "Formations (Geology)"
Now showing items 1-2 of 2
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(Texas A&M University. Libraries, 1991)The Mississippian Mission Canyon Formation (Osagean to lower Meramecian) occurs in central and southwestern Montana as a thick sequence of interbedded shallow water limestones and dolostones. Most of the dolomite in the ...
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(Texas A&M University. Libraries, 1993)Eight pollen and spore sequences from the high ash, high sulfur San Miguel lignite deposit indicate a Late Eocene, Jackson age. In general, the sequences follow a pattern, with high Nyssa kruschii and Rhoipites angustus ...