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Magnitude and duration of surface uplift above the Socorro magma body

¹ Cornell University, Department of Earth and Atmospheric Sciences, Snee Hall, Ithaca, New York 14853, USA

View larger version (99K): [in this window] [in a new window]   Figure 1. A: Shaded relief map showing terraces, rivers, Socorro seismic anomaly, Socorro reflector (Balch et al., 1997), and mapped faults (U.S. Geological Survey and New Mexico Bureau of Mines and Mineral Resources, 2006). B: Line-of-sight surface velocity from inversion of 180 European Remote Sensing satellite interferograms, 1992–2006; contour interval is 0.5 mm/yr. White star indicates location of time series shown in E. C: Model of surface velocity driven by opening of 21-km-radius, 19-km-deep, circular, penny-shaped, horizontal crack in an elastic half-space. D: Residual surface velocity after subtracting C from B. Outlines of Socorro seismic anomaly (outer line) and Socorro reflector (inner line) are also plotted in B–D. E: Surface elevation as function of time from the time series inversion over the center of the magma body (star in B).

View larger version (21K): [in this window] [in a new window]   Figure 2. A: Elevation long profiles of Rio Grande, Llano de Albuquerque (LdA), Llano de Manzano (LdM), and Pliocene sediments (PS) (Bachman and Mehnert, 1978) through the study area. Surface uplift profile is from the model in C. B: Llano de Manzano after subtracting varying amounts of cumulative volcanic uplift.

View larger version (25K): [in this window] [in a new window]   Figure 3. Modeled (dark gray) and measured (black) fluvial elevation long profiles over the Socorro magma body. A: Rio Puerco. B: Rio Salado. C: Rio Grande. In A–C, light gray line shows surface uplift from Figure 1C. In C, heavy dashed black line shows drainage area of Rio Grande as it passes over the Socorro magma body.