Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California
Links
- Document: Pamphlet (pdf)
- Plate: Morena Reservoir plate (pdf)
- Metadata:
- Read Me: Morena Reservoir read me (txt)
- Spatial Data: Morena Reservoir database (zip)
- NGMDB Index Page: National Geologic Map Database Index Page
- Download citation as: RIS | Dublin Core
Introduction
Mapping in the Morena Reservoir 7.5-minute quadrangle began in 1980, when the Hauser Wilderness Area, which straddles the Morena Reservoir and Barrett Lake quadrangles, was mapped for the U.S. Forest Service. Mapping was completed in 1993–1994. The Morena Reservoir quadrangle contains part of a regional-scale Late Jurassic(?) to Early Cretaceous tectonic suture that coincides with the western limit of Jurassic metagranites in this part of the Peninsular Ranges batholith (PRB). This suture, and a nearly coincident map unit consisting of metamorphosed Cretaceous and Jurassic back-arc basinal volcanic and sedimentary rocks (unit KJvs), mark the boundary between western, predominantly metavolcanic rocks, and eastern, mainly metasedimentary, rocks. The suture is intruded and truncated by the western margin of middle to Late Cretaceous Granite Mountain and La Posta plutons of the eastern zone of the batholith.
Suggested Citation
Todd, V.R., 2016, Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California: U.S. Geological Survey Open-File Report 95–50, 12 p., scale 1:24,000, http://dx.doi.org/10.3133/ofr9550.
ISSN: 2331-1258 (online)
Study Area
Table of Contents
- Introduction
- Rocks Units
- Faults
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California |
| Series title | Open-File Report |
| Series number | 95-50 |
| DOI | 10.3133/ofr9550 |
| Year Published | 2016 |
| Publisher | U. S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center |
| Description | Pamphlet: iii, 12 p.; 1 Plate: 32.74 x 30.79 inches; Metadata; Read Me; Spatial Data |
| Country | United States |
| State | California |
| County | San Diego County |
| Other Geospatial | Morena Reservoir |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | Y |
| Google Analytic Metrics | Metrics page |