Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Ambient seismic noise (1)
- And Karst. (1)
- Autochthonous (1)
- Butte (1)
- Calcite (1)
-
- Carbon isotope (1)
- Cordillera (1)
- Cross-correlation (1)
- Electrical Resistivity Tomography (1)
- Hydrogeophysics (1)
- Montana (1)
- Oxygen isotope (1)
- Porphyry copper (1)
- Rhodochrosite (1)
- Rocky Mountain trench (1)
- Sample Core Elastic Properties (Ultrasonic Test) (1)
- Sample Core Induction Potential (SCIP) (1)
- Seismic Refraction (1)
- Seismic interferometry (1)
- Seismic reflections (1)
- Spectral analysis (1)
- Spontaneous Potential (1)
- Stable isotope (1)
- Synthetic seismograms (1)
Articles 1 - 4 of 4
Full-Text Articles in Geophysics and Seismology
A Hydrogeophysical Investigation Of Logan, Mt Using Electrical Techniques And Seismic Refraction Tomography, Taylor Stipe
A Hydrogeophysical Investigation Of Logan, Mt Using Electrical Techniques And Seismic Refraction Tomography, Taylor Stipe
Graduate Theses & Non-Theses
Logan, Montana USA is located on the Gallatin River, one of the three rivers forming the headwaters of the Missouri River. Previous hydrogeological studies have determined that the location at Logan is a possible pinch-point for the local Gallatin watershed where shallow groundwater is expected to discharge into the Gallatin River. However, groundwater monitoring wells indicate dry Tertiary sediments overlying bedrock, suggesting surface and groundwater systems are disconnected. We performed shallow seismic refraction, electrical resistivity, spontaneous potential, and electromagnetic surveys to investigate the groundwater system in the study area. Geophysical measurements were obtained near the Gallatin River and close to …
Investigation Of Ambient Seismic Noise Using Seismic Interferometry In Western Montana, Natalia Krzywosz
Investigation Of Ambient Seismic Noise Using Seismic Interferometry In Western Montana, Natalia Krzywosz
Graduate Theses & Non-Theses
Passive seismic interferometry is a process by which ambient noise data recorded at different seismic stations can be cross-correlated to estimate Green's functions. In the past, both surface waves and body waves have successfully been extracted by cross-correlation of ambient noise data on both regional and global scales. In this study, I have generated Matlab code to simulate an application of seismic interferometry on a synthetic model with pre-defined layers and p-wave velocities. For areas with known velocity models, the Matlab code produced in this study can be used to generate synthetic seismograms, and model the effects of cross-correlation on …
Cordilleran Front Range Structural Features In Northwest Montana Interpreted From Vintage Seismic 2 Reflection Data, Mason Porter
Cordilleran Front Range Structural Features In Northwest Montana Interpreted From Vintage Seismic 2 Reflection Data, Mason Porter
Graduate Theses & Non-Theses
Industry seismic reflection data were collected in 1983 in the Rocky Mountain Cordillera front ranges of northwest Montana. These seismic profiles represent 160 km of deep reflection data that cross the eastern Purcell anticlinorium, Rocky Mountain Trench (RMT), Rocky Mountain Basal Detachment (RMBD), and Lewis thrust. We have reprocessed these data using modern processing techniques including refraction statics, pre-stack time migration (PSTM), and pre- and post-stack depth migration. The RMT contains Tertiary fill to 1 km depth and the RMT fault system has a minimum of 3-4 km of normal displacement. The RMT and Flathead fault systems are interpreted to …
Stable Isotopes Of Hydrothermal Carbonate Minerals In The Butte Porphyry-Lode Deposits, Montana, Ryan Stevenson
Stable Isotopes Of Hydrothermal Carbonate Minerals In The Butte Porphyry-Lode Deposits, Montana, Ryan Stevenson
Graduate Theses & Non-Theses
The stable isotopic compositions of over 90 hydrothermal carbonate minerals in the Butte porphyry-lode system were analyzed. These samples came from the underground workings as well as the active Continental Pit area. Most material came from polymetallic “Main Stage” veins which post-date the porphyry Cu-Mo mineralization of Butte. Some samples from late calcite-stellerite veins were also included in the study. Rhodochrosite d13C and d18O values range from -8.3 to -2.9‰ (average of -6.7±1.0‰) and -1.8 to 12.8‰ (average of 3.6 ±3.4‰) respectively, while calcite d13C and d18O values range from -9.0 to …