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38 PROFILE L- Coli-Huapi (written sideways: A. Outstanding hill near eastern this half of barranca, with rich bone Pocket in upper beds. --------------------------------- B. Main Barranca at point. Bed Y of Profiles J + K 45ձ clay + tuff,Yellow clay. mostly pale pink or gray. Fossils few or absent. 20' Impure _138 gray tuff, bones. Approximately same level. 30'+ gray + light pink + yellow tuffaceous clays. No fossils observed in place. --------------------------------- #246, #140, 237,{ 15�+ gray tuff. Concordant etc. Many fossils. 22� very pale colored tuff + clay, grey, pinkish, yellowish. Ca. 15�, gray tuffaceous clay This part where exposed of section Gympsum bands very poorly Ca. 25' grey tuf' clay, exposed. with at least one bright mottled bed. Ca. 10', clays, variegated, bright colored, but mostly soft. Upper bed of gray silicified tuff with limonite concretions, capping a series of Argiles fissilaires type.)