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Full-Text Articles in Physical Sciences and Mathematics
Geometry Of Silicic Dikes Beneath The Inyo Domes, California, Jonathan H. Fink
Geometry Of Silicic Dikes Beneath The Inyo Domes, California, Jonathan H. Fink
Geology Faculty Publications and Presentations
Structural geologic evidence in the vicinity of the Inyo Domes indicates that the youngest extrusive products were erupted from a silicic dike that divided into at least three segments which underwent up to 30° of clockwise rotation as they neared the surface. The geometry of ground cracks, explosion craters, and surface structures on the domes suggest that the dike may have propagated laterally from a source beneath Mammoth Mountain, with both the overall-dike and the individual segments rising as they moved northward. Structural evidence and tephrochronology also imply that the actual vents may have migrated northward along individual dike segments …
The Effect Of Glaciers On Streamflow Variations, Andrew G. Fountain, Wendell V. Tangborn
The Effect Of Glaciers On Streamflow Variations, Andrew G. Fountain, Wendell V. Tangborn
Geology Faculty Publications and Presentations
The effect of temperate glaciers on runoff variations is examined for the North Cascade Mountains of Washington State. The principal influences of glaciers on streamflow are often unexpected contributions to streamflow volume, a delay of the maximum seasonal flow, and a decrease in annual and monthly variation of runoff. The delay of maximum flow is caused by temporary englacial storage of spring meltwater and by peak meltwater production occurring in midsummer. The englacial storage, for one case, is 54% of the potential May runoff. An algorithm is presented that calculates the coefficient of variation of runoff for any arbitrary glacier …