Horton Bluff Monday July 21 - 1913 We began our studies of the Horton Bluff section at Hard Creek and walked along the left side of the Crow Run to Compton. The first beds are worn away coarse arkose interbedded with green and red shales. This coarse granitic material does not come far and it must have come with considerable stream action for in places it has large pieces of shales and bow blocks up to 1/2 ton in weight. What these arkoses lie upon cannot be seen but are probably the basal shorins. I am told that some ten miles away they lie on the old Olduvician. When we come to the end of the arkoses the next shale series is seen steeply folded and contorted rocks with a clear fault. A study of the place down to lowartide dam told several 3 clay smale pits and a fault with probably no fault this, in other words I think the arkoses made the base of the section and that the folding and faulting is due to the incompetent beds pushing over the competent arkoses.