Jerome Region 37 15 miles N.W. of Canyon Creek Ravonne. At Jerome can be seen only the part beneath the Supai. The other can be seen at Jerome and in the environment a few miles north and along the route from Ravonne to Camp Verde by way of Tunnel Creek. Archean schist. Cambrian 80' Rusty crm-feldded jetty m.-[illegible] near w. of Limited Verde mine Deronian at least in part 500' =Martin li. Thin feldded enpfact li. in large part becoming sandy in upper part. Deronian fmgs. spirifer orth, Cptia cystiniformi, etc. These are in a li. 300' above base (167) Redcell li. 200' White-gry li. {Ochigaphina ovaleori, Productus huligi- Tomasii, Ortonia arcuata, Spirifer centi- natus, etc = Burlington. Supai formation 1000' The sea on Tunnel Creek and at the head of Pine Creek A typical carbonate sh. and m. with some sandy li. 800' beneath top of a 12' syzygiforms, and calc. limestone conglomerate, and Sveral beds of bitu ind. beneath it a 20