Relation of peralkaline magmatism to heterogeneous extension during the Middle Miocene, southeastern Nevada
Journal of Geophysical Research
By: R. B. Scott
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Abstract
Volcanism migrated southward in the northern Basin and Range province in the Oligocene and early Miocene to produce voluminous calcalkaline silicic ash flow tuffs. Alkaline volcanism became dominant by middle Miocene (17-14 Ma) as smaller volumes of rhyolite-trachyte-basalt suites were erupted from the relatively small Kane Springs Wash caldera complex in southeastern Nevada. Only minor extension affected the Kane Wash area before the end of calcalkaline activity, but extension expressed by rate of progressive stratal tilt peaked (15-13.5 Ma) with peralkaline magmatism (14.7-14.4 Ma). Variations in distribution, degree, style, and timing of deformation demonstrate heterogeneous extension in the Kane Wash area. Only minor extension and tilting persisted post-middle Miocene (<12 Ma). All major eruptive sources overlap domains of rapid extension. -from Authors
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Relation of peralkaline magmatism to heterogeneous extension during the Middle Miocene, southeastern Nevada |
| Series title | Journal of Geophysical Research |
| Volume | 100 |
| Issue | B6 |
| Year Published | 1995 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysical Research |
| Google Analytic Metrics | Metrics page |