Interpretation of a seismic refraction profile across the Roosevelt Hot Springs, Utah and vicinity

Technical Report · Thu Mar 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5814637· OSTI ID:5814637

Gertson, R C; Smith, R B

In April 1977, a seismic refraction profile was recorded across the Milford Valley, the Roosevelt Hot Springs KGRA, and the northern Mineral Mountains in southwestern Utah. Seven shot points were used to provide multiple subsurface seismic refraction coverage along the 30 km east-west profile line. Since an inspection of power spectrums revealed large components of 60 Hz noise on some traces, computer routines were used to low-pass filter all seismograms. Amplitude information was utilized by normalizing all traces that recorded the same blast. Subsurface structural modeling was conducted by means of first arrival P-wave delay-time analysis and ray tracing. Herglotz-Wiechert travel-time inversion was used for the velocity-depth distribution in the Mineral Mountains. The interpretation of the P-wave travel-times suggests that the Milford Valley fill consists of two units with a total thickness of at least 1.8 km. In the vicinity of the Roosevelt KGRA, a thin low velocity alluvial layer covers a basement igneous complex with a velocity of 5.2 km/s. Granite velocities between 3.3 km/s and 4.0 km/s were calculated from the travel-times in the Mineral Mountains.

• Research Organization: Utah Univ., Salt Lake City (USA). Dept. of Geology and Geophysics
• OSTI ID: 5814637
• Report Number(s): IDO-78-1701.a.3
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150201 -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
150301* -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys
ALLUVIAL DEPOSITS
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
GRAVITY SURVEYS
Geothermal Legacy
IGNEOUS ROCKS
KGRA
NORTH AMERICA
REFRACTION
ROCKS
ROCKY MOUNTAIN REGION
ROOSEVELT HOT SPRINGS
SEDIMENTS
SEISMIC NOISE
SEISMIC P WAVES
SEISMIC SURVEYS
SEISMIC WAVES
USA
UTAH