Page:Field Notes of Junius Henderson, Notebook 3.pdf/69

 back from the Wasatch formation to the Mesa Verde long before reaching.

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Rained hard during night. Bright, warm morning. Robbins and I started out at 9 a.m., going up to road to cross river to south side. The valley here occupies the upper Mancos formation, with Mesa Verde forming strong bluffs on North side. Dip approximately 15° NW. The Mesa Verde, as usual, is composed mainly of sandstones, with some shales. Several coal veins crop out along the bluffs, at least one of which is being worked. Where we reached the south side of the river a low bluff is composed of shaley sandstone like portions of the Pierre north of. The south boundary of the valley is not at all abrupt. Proceeding up