Methods

Although my work incorporates data from a diverse set of disciplines, my own tools principally lie within three areas:

1. Field Mapping

The detailed association and arrangement of structures in a fault zone are a record of the physics and the mechanisms that govern fault behavior. Exhumed fault and fracture networks provide the critical observations to develop and test the mechanic that explain the behavior of the brittle earth.

  • Detailed structure maps: getting on the outcrop is essential to identifying the type, timing, and relationships among structures comprising a fault or system of fractures
  • Laboratory analysis (thin sections): and then their is seeing how a structure is organized from the micron to the grain scale
  • Balloon & Drone Photogtraphy: Detailed basemaps for these observations can now be built from low leve, high resolution imaging tools
  • LiDAR: Provides extremely precise 3D renders of outcrops and structures

2. Computer Simulations

To test basic concepts of how individual structures are related, interact, and combine into a system driven by the stresses in the earth requires a mechanical framework. Computer simulations enforce mechanical rules to explore and test the relationships evident in the field or in boreholes.

  • Boundary Element Methods

3. Borehole Geophysics

The brittle crust extends to many kilometers depths. Essential mechanics governing faults, earthquakes, and reservoir systems occur at depths only accessible through boreholes. Using boreholes we can observe fractures and faults and the stress states imposed on them.

  • Wireline well logging including Image logs and physical property logs
  • Drillers logs
  • Injection studies

Project Partners

  • Rock Mechanics: USGS
  • Seismology: LLNL, LBNL
  • InSAR and GPS: Kurt Feigl (U. Wisconsin)
  • Geothermal: Navy GPO, Ormat, AltaRock Inc., USGS, Washington State Geological Survey