1. Shallow Reflectors in the Southern Albuquerque Basin from the Sevilleta Array.
- Author
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FINLAY, TORI
- Subjects
- *
SEISMIC arrays , *GEOPHONE , *MAGMAS , *PLATE tectonics - Abstract
The Sevilleta Array was a dense seismic array deployed for 12 days in February, 2015 by collaborators from the University of New Mexico, New Mexico Tech, and Colorado State University. Approximately 800 vertical component, 10-Hz geophones were deployed across the Sevilleta National wildlife refuge in northern Socorro County, New Mexico. The array was designed to investigate the northern half of the Socorro magma body, an actively inflating mid-crustal sill. However, the data has provided an opportunity to examine shallow reflectors in the southern portion of the Albuquerque basin in addition to the magma body. Teleseismic virtual source reflection profiling (TVR) utilizes the free surface reflection of a teleseismic P-wave as a "ghost" source in dense arrays. During the deployment, the Sevilleta Array recorded 62 teleseismic events greater than M5. Applying TVR to the data collected by the Sevilleta Array, we present 2-D profiles created from the four events with the highest signal to noise ratio. Shallow reflectors of interest dominate profiles taken from the northwestern-most quadrant of the array (near the Sierra Ladron uplift) and western edge of the Rio Grande rift. These reflectors may represent normal faulting from the region's past and present tectonic activity. [ABSTRACT FROM AUTHOR]
- Published
- 2017