Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study

Dataset · Sat Dec 01 04:00:00 EST 2018

DOI:https://doi.org/10.15121/1493810· OSTI ID:1493810

Bershaw, John ^[1]; Scanlon, Darby

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1. Portland State University

The Portland Basin is a prime location to assess the feasibility of DDU-TES because natural geologic conditions provide thermal and hydraulic separation from overlying aquifers that would otherwise sweep away stored heat. Under the Portland Basin, the lower Columbia River Basalt Group (CRBG) aquifers contain brackish water (1,000-10,000 mg/L TDS), indicating low groundwater flow rates and poor connection with the overlying regional aquifer. Further, CRBG lavas tend to have comparatively low thermal conductivity, indicating that the 400-1,000 ft thick CRBG may be an effective thermal barrier to the overlying aquifer. A temporally and spatially limited previous study of a Portland Basin CRBG aquifer demonstrated that the injection of waste heat resulted in an increase in temperature by more than a factor of two, indicating a high potential for storing heat. This data submission includes ASCII grid surfaces for the Portland and Tualatin Basins including a DEM of modern topography, the top of Columbia River Basalt (CRB), the base of CRB, and basement. It also includes three isochore (thickness) maps between these intervals. In addition, there is an ArcGIS attribute table for associated data points, a map of data types used to constrain the top of CRB, and cross-sections, all made using IHS Kingdom Suite, Petrosys PRO, ESRI ArcGIS, and Adobe Illustrator software.

• Research Organization: DOE Geothermal Data Repository; Portland State University
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
• Contributing Organization: Portland State University
• DOE Contract Number: EE0008104
• OSTI ID: 1493810
• Report Number(s): 1104
• Availability: [e-mail]
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
ArcGIS
CRBG
Columbia River Basalt Group
DDU
DDU-TES
DEM
Deep Direct-Use
GIS
Oregon
Portland
Portland Basin
TES
cross section
cross-section
digital elevation map
elevations
energy
feasibility
geology
geospatial data
geothermal
map
outcrop
seismic
structure map
survey
thermal energy storage
well data