. Bulletin of the Geological Society of America. Geology. DETAILED STUDY OF SECTIONS 165 from Long Island City to the Bronx. * Diamond drill borings have been made for piers at the crossing of Hell Gate, f Gneiss was found on the Long Island side at a depth of about 100 feet below mean high water. On the Wards Island side of this crossing the rock is hornblende gneiss. mtTmrmm Stj Figure 11.— Section across Harlem River, Along line of Second Avenue bridge. Between Wards and Randalls islands the gneiss surface was found at a depth of only a few feet below tide. X Hell Gate reefs
. Bulletin of the Geological Society of America. Geology. DETAILED STUDY OF SECTIONS 165 from Long Island City to the Bronx. * Diamond drill borings have been made for piers at the crossing of Hell Gate, f Gneiss was found on the Long Island side at a depth of about 100 feet below mean high water. On the Wards Island side of this crossing the rock is hornblende gneiss. mtTmrmm Stj Figure 11.— Section across Harlem River, Along line of Second Avenue bridge. Between Wards and Randalls islands the gneiss surface was found at a depth of only a few feet below tide. X Hell Gate reefs.—The government works at the entrance to this channel Center Pier Caisson Mor+h. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological Society of America. [New York : The Society]
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890
