LOCATED IN LYON COUNTY; FINAL TECHNICAL REPORT FOR NSF CONTRACT NO. 431-2681-A; FOSSILS; GEOLOGY; GEOCHEMISTRY; HANDWRITTEN NOTES; STRATIGRAPHIC CORRELATION WITH TEPHRA SAMPLES FROM NEAR BRADY'S HOT SPRINGS; SITE NAME: QUARRIES A,E,F; COMMODITY: DIATOMITE; AUTHOR: BROWN, F.H.