Laboratory Research
 
 1. mechanical properties of rocks affecting strain relaxation (1974-1996)

 2. fluid transport of properties of rocks, mainly permeability of joints (1976-1985)

 3.  geochemistry of rock-water interaction (1980-1985)

 4.  experiments in fracture toughness in rocks (1987-present)

 Field Research
 
 1.  A study of the characteristics of fault zones in the Cordilleran Region, 
     1971-72, 1979-80

 2.  Strain relaxation and hydraulic fracture in situ stress measurements in
      northeastern United States and California, 1974-1993

 3.  In situ ultrasonic properties of rock, 1978-1995

 4.  Fracture Analysis - Appalachian Basin, NY-PA,  Salt Range (Pakistan), 
      Monterey Formation,  CA, Michingan Basin,  MI, Elk Basin, WY,  Bristol 
      Channel, Somerset (England), Paradox Basin, UT, 1978-present

5.  Strain Analysis in foreland fold and thrust belts - Appalachian Basin, Apennines 
     (Italy), Patagonian Andes (Chile), 1976-present

6. In situ conditions in overpressured sedimentary basins, 1989-present

 Theoretical Analyses

1. Development of natural hydraulic fractures  1985 - present

2. Development of stress in overpressured sedimentary basins,  1989 – present

3. Mechanical properties of rock controlling fracture spacing (1985-present)