Upper Pleistocene pyroclastic-flow deposits and lahars south of Mount St. Helens volcano, Washington /

A study of a valley-fill assemblage of pyroclastic-flow deposits, lahars, and alluvium of late Pleistocene age south of Mount St. Helens volcano.

Bibliographic Details
Main Author:	Hyde, Jack H.
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1975.
Series:	Geology of Mount St. Helens Volcano, Washington. Geological Survey bulletin ; 1383-B.
Subjects:	Volcanic ash, tuff, etc. > Washington (State) > Saint Helens, Mount. Lahars > Washington (State) > Saint Helens, Mount. Geology, Stratigraphic > Pleistocene. Geology > Washington (State) > Saint Helens, Mount.

by Hyde, Jack H.
Published 1975

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