[[circled]] 39 [[/circled]] 
6687 - in a glen about 1/2 mile south of road intersection with BM near 
582, Devonian consists of about 3 1/2' of limestone breccia followed by 
3 1/4' of hard dark gray limestone which is followed by the Chauteau. 
We saw no ss in place. This is 35'-40' above The tracks See Columbia 
[[image of square]]. 
G. Arthur Cooper - Field notes, 1966 
Transcribed and Reviewed by Digital Volunteers 
Extracted Nov-02-2015 11:09:05 
Smithsonian Institution Transcription Center, Smithsonian Institution Archives 
