Geologic Mapping in the Black Mountain Area, Northern Eastern California Shear Zone: Testing a Kinematic and Geometric Fault Slip Transfer Model
Date of Degree Completion
Master of Science (MS)
Second Committee Member
Third Committee Member
New geologic mapping, structural, kinematic, and 40Ar/39Ar geochronology studies in the Black Mountain area, northern eastern California shear zone, are used to test a kinematic fault slip transfer model for the Owens Valley fault-Mina deflection transition. In the Black Mountain area, range bounding ~NNW- to ~NS-striking and lesser NW- to NE-striking normal faults cut Mesozoic, Miocene (22.42 ± 0.05 Ma), Pliocene (3.53 ± 0.06 to 3.29 ± 0.02 Ma), and early-middle Pleistocene (1936 ± 12.7 to 766 ± 3.1 ka) rocks. Palinspastically restored cross-sections show that offset Pliocene markers record 1.5 +0.7/-0.6 km of ~ENE-WSW extension since ~3.29 Ma, indicating an extension rate of ≥0.5 ± 0.2 mm/yr. We combine our new rates with slip rates on nearby fault zones to refine a kinematic fault slip transfer model for the Owens Valley fault-Mina deflection transition and address the discrepancy between geodetic strain rates and geologic slip rates across the region.
DeLano, Kevin M., "Geologic Mapping in the Black Mountain Area, Northern Eastern California Shear Zone: Testing a Kinematic and Geometric Fault Slip Transfer Model" (2015). All Master's Theses. 277.
Plate 1 - Geologic Map
Plate 2 - Strat Column.pdf (449 kB)
Plate 2 - Stratigraphic Column
Plate 3 - Cross Sections 1-24000.pdf (1743 kB)
Plate 3 - Geologic Cross-Sections
Plate 4 - Fault Map.pdf (55421 kB)
Plate 4 - Fault Map
Plate 5 - Z-Z' Error Cross-sections.pdf (1051 kB)
Plate 5 - Error Cross-Sections