. Contributions to the geography of the United States, 1923-1924. Geology; Mines and mineral resources. V. S. GEOLOGICAL SURVEY BULLETIN 760 PLATE XXVIII. 1 %^f â !>, " Bito r- '- y^ - ^-" M y* ( pi ^ W^:^" - 'M p^ >'; 1 I !*â¢--. -. â h ^ H^nHa|gBg{HÂ»,n. ^^â ^^n IH 1 ^H ^> . ^H^^l^^H^t ^^1 H 1 m Kk^^ ^^^^^^^^^^HHfiini mm fclMta'^'WW 1^ -'""--^ ^^\ â â ^. â¢ } SINK HOLES ON LIVINGSTON RANCH, ABOUT 20 MILES SOUTHEAST OF CARLSBAD, N. MEX. A, Formed in August, 1918, when a cavern collapsed, leaving an opening about 75 feet across and 60 feet daep; B, formed by t

. Contributions to the geography of the United States, 1923-1924. Geology; Mines and mineral resources. V. S. GEOLOGICAL SURVEY BULLETIN 760 PLATE XXVIII. 1 %^f â !>, " Bito r- '- y^ - ^-" M y* ( pi ^ W^:^" - 'M p^ >'; 1 I !*â¢--. -. â h ^ H^nHa|gBg{HÂ»,n. ^^â ^^n IH 1 ^H ^> . ^H^^l^^H^t ^^1 H 1 m Kk^^ ^^^^^^^^^^HHfiini mm fclMta'^'WW 1^ -'""--^ ^^\ â â ^. â¢ } SINK HOLES ON LIVINGSTON RANCH, ABOUT 20 MILES SOUTHEAST OF CARLSBAD, N. MEX. A, Formed in August, 1918, when a cavern collapsed, leaving an opening about 75 feet across and 60 feet daep; B, formed by the collapse of a cavern in gypsum lying near the surface. Photographs by W. T. 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 Campbell, Marius R. (Marius Robinson), 1858-1940; Geological Survey (U. S. ). Washington [D. C. ] : U. S. Govt. Print. Off.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectgeology, booksubjectm

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