Ash-flow tuffs
Subtitle: their origin, geologic relations and identification
By: by Clarence S. Ross and Robert L. Smith.
Contributors: Smith, Robert L., 1926-; United States. Geological Survey.
Series: Geological Survey professional paper ; 366
Publisher: U.S. Govt. Print. Off
Published: 1961
Place of publication: Washington
Language: eng
Notes: 'A study of the emplacement, by flowage, of hot gas-emitting volcanic ash; its induration by weiding and crystallization, and criteria for recognizing the resulting rock'.