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8 B. Small cone, etc. near main barranca Coli-Huapi, W. end. (sideways: On top of this cone, frag,. mammal tooth, not in place, but no higher beds near or above this. 13' fine tufaceous clay. Weathering yellows. Less mottled. 6' hard white clay with }concordant clay balls. 20' soft pink to greenish clay mottled yellow, very gyps' + with beds }concordant of gyp. 35' fissile clay, 9' greenish to obscure bedding, yellow clay,rare mottled orange bone fragments indistinct silicified patches. Obscure 15' pink to buff Limonite nodules gyps' clay Obscure Argiler fissilaires obscure)