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22 Corresponding horizon 40' Sandy 20'+ (to top of barranca) tuffs with softer clays + tuffs indurated vesicular 9' hard vesicular layers tuff + cg. 110' Massive 24' White tuff sandy tuffs. and buff clays. Many indu- rated layers (often with 35' Lava, numerous clay local flow. balls). Many lenses of con- 30' buff clays glomerate and + tuff, baked x-bedded sand. near top. No beds per- sistant far. 22' Soft Many local grey tuffs, some unconformities- clay balls. Base Line 9'= massive tuff, not PROFILE always well distinguished from A PROFILE H. above. Cg. in lower pt. 15'� clay 10'-20' 'Lower channel.' Base Line 64, 101, etc. PROFILE G