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Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework

June 10, 2009

The southern Espanola 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.

Citation Information

Publication Year 2009
Title Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework
DOI 10.3133/pp1761
Authors V. J. S. Grauch, Jeffrey D. Phillips, Daniel Koning, Peggy S. Johnson, Viki Bankey
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Professional Paper
Series Number 1761
Index ID pp1761
Record Source USGS Publications Warehouse
USGS Organization Crustal Imaging and Characterization