Κανονική προβολή Προβολή MARC Προβολή ISBD

Smith, Robert L.

Zones and zonal variations in welded ash flows / by Robert L. Smith. - Washington: U. S. Government Printing Office, 1960. - iii, 149-159 p. ; 29 cm. + 1 diagr. - 354 Shorter contributions to general geology .

Conduct diagram: Diagrams showing the zones of some ash-flow cooling units.

Includes bibliographical references (p. 158-159).

A concept of zonation in ash flows based on degree of welding and type of crystallization.

Subjects--Topical Terms:
Ignimbrite
Volcanic ash, tuff, etc

Dewey Class. No.: 551