Devonian formations of Alto Pass quadrangle
Stratigraphy of each series includes lithology, attitude, correlation, description of some sections, and fossils collected.
Economic possibilities include Portland Cement materials, road metal silica, potash and limestone for fertilizer, and minor lead and zinc.
Alto Pass Quadrangle
Manuscripts, maps, fieldnotes, and photographs may be viewed in-house only. Please contact the ISGS Special Collections Curator, Anne Huber, for an appointment at 217-300-0005 or email firstname.lastname@example.org Monday thru Friday, 8am-noon or 1pm-5pm.