State of stress and modern deformation of the northern Basin and Range province
Journal of Geophysical Research
By: M.L. Zoback
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Abstract
Constraints on the current stress regime of the actively extending northern Basin and Range province are provided by deformation data (focal mechanisms and fault slip studies), hydraulic fracturing in situ stress measurements, borehole elongation ("breakouts') analyses, and alignment of young volcanic vents. The integrated data indicate significant variations both in principal stress orientations and magnitudes. An approximately E-W least principal stress direction appears to characterize both the eastern and western margins of the Basin and Range province, whereas in the active interior parts of the province extension occurs in response to a least principal stress oriented NW to N60??W. The contrast in stress orientations between the province boundaries and in the interior suggests that along the margins the least principal stress direction may be locally controlled by the generally northerly trending profound lithospheric discontinuities associated with these margins. -from Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | State of stress and modern deformation of the northern Basin and Range province |
| Series title | Journal of Geophysical Research |
| Volume | 94 |
| Issue | B6 |
| Year Published | 1989 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysical Research |
| First page | 7105 |
| Last page | 7128 |
| Google Analytic Metrics | Metrics page |