Open AccessChemical discrimination of Columbia River basalt flows
Author(s) -
Hooper Peter R.
Publication year - 2000
Publication title -
geochemistry, geophysics, geosystems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.928
H-Index - 136
ISSN - 1525-2027
DOI - 10.1029/2000gc000040
Subject(s) - flood basalt , basalt , geology , dike , plateau (mathematics) , flood myth , earth science , homogeneity (statistics) , geochemistry , seismology , archaeology , volcanism , tectonics , mathematical analysis , mathematics , history , statistics
The homogeneity and distinctive chemical composition of individual Columbia River basalt flows are illustrated in a series of chemical plots, and the procedure for flow identification is outlined. The unique characterization of many individual eruptions permits units to be mapped from feeder dike to flow margins across the Columbia Plateau for hundreds of kilometers, and so provides critical constraints on the physical and chemical evolution of this continental flood basalt province.