Orientation of least-principal horizontal stress: Arizona, New Mexico, and the Trans-Pecos area of west Texas: stress data and references
Technical Report
·
OSTI ID:5204559
This map is one of a series designed for hot dry rock geothermal assessment in Arizona, New Mexico, and the Trans-Pecos area of west Texas. It is intended to be used for predicting the orientations of hydrofractures that might form during future HDR energy operations. Indicators of principal stress orientation include alignments of young volcanic vents, trends of young dikes, slickensides on oblique-slip normal faults, earthquake focal mechanism solutions, hydrofracture orientations, and strain relief determinations. Stress provinces were delineated using the stress data in conjunction with geologic maps of the region. The Basin and Range stress province is characterized by least-principal horizontal stresses that are generally oriented west to west-northwest approximately perpendicular to the north-trending ranges. In southwestern Arizona, where the ranges and basins trend northwest, the least-principal horizontal stress directions are mostly oriented east-northeast. This segment of the Basin and Range Province is therefore shown as a subprovince (Sonoran). The Transitional Province, which wraps around the south edge of the Colorado Plateau, has stress orientations characteristic of both the Colorado Plateau and Basin and Range stress provinces.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5204559
- Report Number(s):
- LA-9158-MAP; ON: DE82015890
- Country of Publication:
- United States
- Language:
- English
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