bed 6: covered-8' bed 7: 6'; 6/28/57/5 (23-7)} PG. 26 Collection 6/28/57/6 from a brown weathering biohermal limestone in the Uddenities zone. This is approximately midway between the base of P.King's #2 limestone and the top of the Gaptank limestone- The Uddenites zone is badly covered here- This section is in line with the road down to the Ranch House S55°E, I estimate the thickness to be 85-95'- The outcrop from which collection 6/28/57/6 is about 8'. Afternoon- West of Main Hill {note: illustration followed} PG. 27 The outward appearance of this is quite misleading. The Gaptank limestone forms an anticlinal structure under the western bioherm of the main #2 ledge- The Uddenites zone and a part of the biohermal reef have slipped as a unit down one of the lower Uddenites shale bedding planes. The mass now rests in a structural valley of the Gaptank fm. The eastern side has moved the furthest with about 175' of displacement, the western end is more or less hinged about a point. Collection 6/28/57/7- about 6' below top of Gaptank fm - east side of Geologists Canyon- On the east side of Geologists Canyon, the “window” which C.O.D. pointed out on the first day is most confusing. I have some doubts as to whether it really is a “window” structure. The Gaptank does some fancy folding at this locality and it seems that the Uddenities zone is missing and the #2 limestone of King sits directly on Gaptank limestone. PG. 28 The Uddenites zones if present is only a foot or so thick, but probably is represented by little more than an erosional bedding plane. The fossils present are dominantly crinoids and a few brachiopods and are now a red chert or silica. This area is quite important and it will pay to study the fauna as carefully as possible to determine age relationships. The dips and questionable faults also may have some importance on the regional structure of the fate Penn. 6/29/57 - Drove to Alpine and got a haircut and the brakes tightened on the car. Did some banking for Mr. Fallis also. Sent off 2 bags of rock specimens to Peabody Museum on this date also. Railway Express-COD-100lbs. total. PG. 29 6/30/57 Section 22 Geologists Canyon-Section IV