. Annual report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution. SIERRA SERI FROM TIBURON ISLAND. PUNTA YGNACIO, TIBURON BAY MCGEE] THE SURFACE OF TIBURON 43 ant. Sierra Meiior is a third term in the inountaiii series, in structureand seoiuorphy as iu altitude; while the iuterior plain is a homologiieof that portion of Desierto Eucinas lying north of IMaya Xoriega—, of its (potentially) free drained portion. Almost the entire perim-eter of Tiburon is suffering marine transgression, and is faced shelves; and in both fo


. Annual report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution. SIERRA SERI FROM TIBURON ISLAND. PUNTA YGNACIO, TIBURON BAY MCGEE] THE SURFACE OF TIBURON 43 ant. Sierra Meiior is a third term in the inountaiii series, in structureand seoiuorphy as iu altitude; while the iuterior plain is a homologiieof that portion of Desierto Eucinas lying north of IMaya Xoriega—, of its (potentially) free drained portion. Almost the entire perim-eter of Tiburon is suffering marine transgression, and is faced shelves; and in both form and struc-ture the greater part of the coast rei)eats, with minor variations, thetVatures of the mainland coast from Punta Ygnacio northward. Partlybecause of the superior magnitude and height of its debris-yieldingsierra, i)artly because of protection from the wave-beat of tlie opengulf, the eastern shore is skirted with a talus slia|>e slope, usually twoto four miles wide; and while there are unmistakable evidences ofsheettlood carving in the higher portions of this plane, the coastal cliffcommonly reveals nothing but


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectindians, bookyear1895