Lange, Rebecca A. Constraints on the preeruptive volatile concentrations in the Columbia River flood basalts - Boulder, CO Geological Society of America February 2002 - pp. 179-182 ilus., tbls. Subjects--Topical Terms: BASALTOSDENSIDADINUNDACIONESLAVASMATERIA VOLATIL Subjects--Geographic Terms: COLUMBIA, RIOESTADOS UNIDOSNEVADAOREGON