Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Kuntz, Mel A., Rowley, Peter D., MacLeod, Norman S.
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey ; 1990.
Series:	Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1950.
Subjects:	Volcanic ash, tuff, etc. > Washington (State) > Saint Helens, Mount Region > Maps. Lahars > Washington (State) > Saint Helens, Mount, Region > Maps.

Description
Item Description:	Relief shown by contours and spot heights. "Geology mapped in 1980-84." Includes text, bibliography, location map, table, 5 figures, and col. aerial photograph. Cartographic material.
Physical Description:	4 maps on 2 sheets : color ; 89 x 75 cm. and 79 x 32 cm., on sheets 101 x 137 cm. and 94 x 122 cm., folded in envelope 30 x 24 cm.