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Fig. 1 . Contact of the Double Mountain beds with the Dockum, Triassic, in Palo Blanco 

 Canon, Dickens County, Texas. Line of contact is just above the tilted layer oppo- 

 site the waist of the figure to the right. 



Fig 2. Banded clays in the Bad Lands just east of Tucumcari, New Mexico. 



Fig. 3. Nearer view in the same locality. The cross-bedded sandstone is underlain by bluish 

 sandy clay, this by purple clay down to the hand of the man, and then deep red clay. 



