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160 PROFILE DA CABEZA BLANCA (Written Sideways: Rodados, in places forming thin gravel lenses. Same as Other side. 90' Marine. Chiefly rather massive 85' light colored tuff. Oyster banks. Upper lens coarse cg., ma- rine. Lower lenses cg + Basal cong. + coarse ss. hard ss., grading into Thickly + vague- 85' 40' ly bedded yellowish Fine, thin-bedded, yellowish to grey tuffs, large grey ss, x-bedde on small scale, concretions some- #311 etc. ripple marks. times in definite 70' Greenish-grey channel beds. Usually ob- beds, x-bedded ss., fine liquely bedded. gravel, + grey tuff. Some lenses of more massive 20'+ yellow tuff. Massive pale tuffs, 50'+ grey to yellowish or pinkish. #318 Many small white concretions, esp. 50' near top. Vertical scale. S. N. 0 Section roughly north to south through the more eastern of the two peaks of Cabeza Blanca)