An Evaluation of Carbon Dioxide Sequestration Potential in Mohawk Basin, Gila River Trough, Southwestern Arizona

Gootee, B.F.

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Citation

Gootee, B.F., 2013, An Evaluation of Carbon Dioxide Sequestration Potential in Mohawk Basin, Gila River Trough, Southwestern Arizona. Arizona Geological Survey Open File Report, OFR-13-02, v 1.0, 8 p., 2 plates.

Publisher

Arizona Geological Survey (Tucson, AZ)

Description

As part of WESTCARB Phase III, the AZGS is evaluating the potential for CO2 sequestration in geologic formations that are below a level of 800 meters (m) depth below land surface (bls). This evaluation is directed at porous and permeable geologic formations with impermeable sealing strata in Cenozoic sedimentary basins in the Basin and Range Province, and Paleozoic sedimentary formations in the Colorado Plateau. An initial screening of Cenozoic sedimentary basins with significant depth and volume below the 800 m bls level resulted in ten candidate basins from a total of 88 basins (Spencer, 2011). This report represents ongoing WESTCARB assessment of CO2 storage potential in the Mohawk basin, one of ten Cenozoic basins in Arizona identified during the preliminary evaluation, and is part of Tasks 2 and 3 of Arizona WESTCARB Phase III. Task 2 consists primarily of characterizing basin structure, stratigraphy, lithology, and the nature of seals or a cap rock. This task also includes determining the storage capacity of permeable sediments below 800 depth (Spencer, 2011). Task 3 is to determine if, and at what depth, saline groundwater approaches 10,000 milligrams per liter (mg/L) of total dissolved solids (TDS), characterized in a separate study (Gootee and others, 2012). This concentration represents the threshold above which water is considered non-potable and unsuitable as drinking water (United States Environmental Protection Agency). Individual-basin studies such as this study are intended to provide estimates of the volume of permeable strata that are capped by impermeable strata (with an interface at depths greater than 800 m), and that are saturated with saline groundwater (>10,000 mg/L TDS).

URI

http://hdl.handle.net/10150/630689

Additional Links

https://library.azgs.arizona.edu/

Language

Series/Report no.

OFR-13-02

Rights

Collection Information

Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.

North Bounding Coordinate

32.7949

South Bounding Coordinate

32.3552

West Bounding Coordinate

-114.06

East Bounding Coordinate

-113.428

Collections

AZGS Document Repository