86 The circulation Leonard Mt. apparently with the same as the formation below? Need Beach. The Leonard Mt. section is correlated by a fault just west of 1st Sidgey. This fault apparently bounds the New West on the NW. 7/23/58/3 - Beach + Jurassic horizons, top of northernmost knob on Leonard Mts. (Upper 3' of Knob) 7/23/58/4 - about 50' to Cn (3) in saddle to S of beach [see p.65] 7/23/58/5 - Collection from upper portion Gaptank Side SE facing Leonard Mt. - This is about 30 yards SW of section 36. Jim Phillips collected from lower portion of section 36 (see page 45). Collecting 7/23/58/6 7/23/58/7 - (see page 65) upper portion of gaptank SE flank Leonard Mt. 87 loc. 0317 The folded & faulted rocks at the base of the SE facing Leonard Mt have this sequence roughly: 240' orange-brown, gritty sandstone with interbedded light gray shale at least 100' total dark brown to black chert, 3" to 6" beds with thin shale interbeds. 60-70' light gray siltstone 6" to 2" with thin clayey partings. Calcite veinlets apparently - limestone chert bands near top 50m of beds 100' or more Using these beds have fossils, except for locality at 8/24/57/2 (and 7/23/58/1). This one locality has a thin 2' foot zone with Jurassic and marine fauna and is only found at this one locality. This overlies the upper unit shown above, but has about 10' of similar course brown sandstone above, but perhaps folded. The circulation of the lower unit is similar to the 'Bolonian just south of Marathon, the chert is similar in color to the Maravillas, but the upper orange- brown interbeds similar to some beds on the eastern side of Leonard Mtn. as seen in the "Jawors"