Page 12 - elizondo1953

brecoia-like material that occurs on a ridge between San Franoisquito

and Charlie Canyons. Flagstone from certain layers of the Pelone

schist has been quarried to a limited extent,

Scope or this work.

The puJ'poae of' the present study was to determine, in detail,

the stratig~aphy and stru.oture ot the area in. the general vicinity

Field and Office work"'

4S deys were spent :1n the field, Point elevatio:na and magnetic

north directions were plotted in a good, 1/12000 scale u,s,a,s, topogo

:raphic map .with the aid of a Brunton Com:passJ short distances on the

ground were measured by pacing ..

The office work covered thJ"ee and a half weeks, '.Dratting,

and the preparation of' illustrations as well as \,J:ri.ting and typswri ting

of the manuacript took two and a halt weeks. Six dqs werv necessary

:tor the examination o:t thin sections under the petrographic microscope;

a ~apid review bf vertebrate fossils ot the Mint canyon formation was

g:hen during this interval at Ca11to:rnia Institute of Technology"'

The investigations which f'ollowed the taU.ure of the dam in

1928 included several geological studies :tn eo:rmeetion with engineering