Surficial Geology of the Mosier Creek Basin
Description
A surficial and structural geologic map (SIR-2012-5002, fig. 2) was compiled to aid in the
building of the three-dimensional geologic model. The map covers 327 square miles in
north-central Oregon and south-central Washington, and completely contains the study
area defined by the Mosier-Rock-Rowena Creek Watershed extents. Surficial and
structural geologic maps, cross-sections, and stratigraphic interpretations of well logs
from previous reports were synthesized into this compilation map (Newcomb, 1969;
Swanson and others, 1981; Bela, 1982; Lite and Grondin, 1988; Kienle, 1995; and Jervey,
1996). The focus of this effort was to refine the geologic map within the study area to aid
in construction of a three-dimensional geologic model to be used as the foundation for
groundwater flow simulation. Areas outside of the study area boundary were given less
attention.
The primary sources for surficial and structural geology were Lite and Grondin (1988) and
Kienle (1995). Both extents together cover 78% of the geologic model area and represent
the largest scales mapped. Individually each provides significant surficial and structural
detail absent in other sources. Where they overlap both maps are mostly in agreement
with only subtle differences. Both Lite and Grondin (1988) and Kienle (1995) together
comprise all of the major structural components represented in the geologic model with
the exception of the wrench fault associated with the Maupin trend.
Secondary sources for surficial and structural geology include Newcomb (1969),
Swanson and others (1981), Bela (1982), and Jervey (1996). Newcomb (1969) was
used to delineate alluvium, landslide deposits, glaciofluvial deposits, and Chenowith
Formation material outside of the Lite and Grondin (1988) and Kienle (1995) map
boundaries in Oregon. In the western portion of the map in Oregon and all of Washington,
Bela (1982) was relied upon for surficial geology. Bela (1982) also provided all of the
structural content outside the area covered by Lite and Grondin (1988) and Keinle
(1995), with additional detail provided by Swanson and others (1981) and Jervey (1996).
Resources
| Name |
Format |
Description |
Link |
|
55 |
The metadata original format |
https://data.usgs.gov/datacatalog/metadata/USGS.83167352-7757-4a20-9ee3-5cec2f6eea5d.xml |
|
55 |
Landing page for access to the data |
https://doi.org/10.5066/P9G45C17 |
Tags
- mosier-creek-basin
- usgs-83167352-7757-4a20-9ee3-5cec2f6eea5d
- inlandwaters
- geologic-compilation
- oregon