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Open-File Report 2013–1024

Prepared in cooperation with the U.S. Army, Fort Irwin National Training Center

Geology and Geophysics Applied to Groundwater Hydrology at Fort Irwin, California

David C. Buesch, Editor

Cover of Open-File Report 2013-1024Abstract

Geologic and geophysical investigations in the vicinity of Fort Irwin National Training Center, California, have been completed in support of groundwater investigations, and are presented in eight chapters of this report. A generalized surficial geologic map along with field and borehole investigations conducted during 2010–11 provide a lithostratigraphic and structural framework for the area during the Cenozoic. Electromagnetic properties of resistivity were measured in the laboratory on hand and core samples, and compared to borehole geophysical resistivity data. These data were used in conjunction with ground-based time-domain and airborne data and interpretations to provide a framework for the shallow lithologic units and structure. Gravity and aeromagnetic maps cover areas ~4 to 5 times that of Fort Irwin. Each chapter includes hydrogeologic applications of the data or model results.

First posted November 26, 2014

These reports are only available on-line

For additional information, contact:
Geology, Minerals, Energy, and Geophysics Science Center
U.S. Geological Survey
345 Middlefield Road, MS 901
Menlo Park, CA 94025-3591

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Open-File Report 2013–1024-A: Introduction to the geologic and geophysical studies of Fort Irwin, California

Open-File Report 2013–1024-B: Generalized surficial geologic map of the Fort Irwin area, San Bernardino County, California

Open-File Report 2013–1024-E: Laboratory Electrical Resistivity Analysis of Geologic Samples from Fort Irwin, California

Open-File Report 2013–1024-F: Time-domain electromagnetic surveys at Fort Irwin, San Bernardino County, California, 2010–12

Open-File Report 2013–1204-G: Airborne Electromagnetic Data and Processing within Leach Lake Basin, Fort Irwin, California

Open-File Report 2013–1024-H: Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California

Open-File Report 2013–1024-I: Aeromagnetic data, processing, and maps of Fort Irwin and vicinity, California


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