Thursday Sep 1 - 1932 Wea. TUES. AUG. 3, 1909 Ther. Started our first round metal quarry on xx of high- Forte Center in the contact between the Barton slate and the Dolgrig "Milton" = the base of the Highgate grayw. argyl. dol. This quarry is now much darker and thinner than the first time the overlying fine dolgrig dol. and chrl cpl. apx. into the L.C. Dolos. A diagram for is given in the 1st- paper pages. The cpl. here is just like the round we saw a study of the western end of section, a dark blue sandy-muddy mud of tangled brucia appearing all the same age as antral and generally fine grained dolgrig. forming a thin interbedded with dark laminated dol mud. then more cpl. above but not or markedly cpl. The pieces in the cpl. vary up to 6 inches. A close study of the base of the cpl. shows it to be a depositional contact between the Upper and Lower Cambrian. It shows not the slight thrusting and the very sandy dol. is not fractured at this pts. It now appears that the Linnersonian first before are in the lower of the Ap-Cambrian, at least here in cpl. below it. The graphite is clearly distinct from the Lower Cambrian slate, beneath the sandy dol and the original unconformity. The dip is S.W. about 15° certainly not as much as 20° Looking W across the little crags to Barton here does