Professional Paper 1761
The southern Española basin consists of a westward- and northward-thickening wedge of rift fill, composed primarily of Santa Fe Group sediments, that serves as an important aquifer for the city of Santa Fe and surrounding areas. Detailed aeromagnetic surveys were flown to better understand ground-water resources in this aquifer. This report presents a synthesis of these data with gravity data and other constraints. The interpretations were accomplished using qualitative interpretation, state-of-art data analysis techniques, and two- and three-dimensional modeling. The results depict the presence of and depth to many geologic features that have hydrogeologic significance, including shallow faults, different types of igneous units, and basement rocks. The results are presented as map interpretations, geophysical profile models, and a digital surface that represents the base and thickness of Santa Fe Group sediments, as well as vector files of some volcanic features and faults.
First posted June 9, 2009
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Grauch, V.J.S., Phillips, J.D., Koning, D.J., Johnson, P.S., and Bankey, Viki, 2009, Geophysical interpretations of the southern Española Basin, New Mexico, that contribute to understanding its hydrogeologic framework: U.S. Geological Survey Professional Paper 1761, 88 p.
Objectives, Approach, and Hydrogeologic Significance
Data Types and Descriptions
Methods of Data Analysis
Interpreted Elements of the Basin Floor
Interpreted Elements of Basin Fill
Description of Digital Products
Appendix 1. Well Data Used to Constrain Three-Dimensional Integrated Model and Gravity Inversion
Appendix 2. Well Data Used to Guide Three-Dimensional Integrated Model
Appendix 3. Magnetic Depth Estimation Methods Used in This Study
Appendix 4. Other Point-Located Data