Geologic map of the Cape Mendocino, Eureka, Garberville, & southwestern part of the Hayfork 30 X 60 Quadrangles and Adjacent Offshore Area, Northern California
Entry ID: USGS_MAP_MF-2336

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Summary
Abstract: This database and accompanying plot files depict the distribution of geologic
materials and structures at a regional (1:100,000) scale. The report is
intended to provide geologic information for the regional study of materials
properties, earthquake shaking, landslide potential, mineral hazards, seismic
velocity, and earthquake faults. In addition, the report contains new
information and interpretations about the regional geologic history and
framework. However, the regional scale of this report does not provide
sufficient detail for site development purposes. In addition, this map does
not take the place of fault-rupture hazard zones designated by the California
State Geologist (Hart and Bryant, 1997). Similarly, the database cannot be
used to identify or delineate landslides in the region.

This digital map database, compiled from previously published and unpublished
data, and new mapping by the authors, represents the general distribution of
bedrock and surficial deposits in the mapped area. Together with the
accompanying text file (ceghmf.ps, ceghmf.pdf, ceghmf.txt), it provides current
information on the geologic structure and stratigraphy of the area covered.
The database delineates map units that are identified by general age and
lithology following the stratigraphic nomenclature of the U.S. Geological
Survey. The scale of the source maps limits the spatial resolution (scale) of
the database to 1:100,000 or smaller.

This is the pre-release version of the report. The accompanying text file
mf2336.rev contains version numbers for each part of the data set.

This report consists of a set of geologic map database files (Arc/ Info
coverages) and supporting text and plotfiles. In addition, the report includes
two sets of plotfiles (PostScript and PDF format) that will generate map sheets
and pamphlets similar to a traditional USGS Miscellaneous Field Studies Report.
These files are described in the explanatory pamphlets (ceghdesc and ceghdb).
The base map layer used in the preparation of the geologic map plotfiles was
downloaded from the web (www.gisdatadepot.com) as Digital Raster Graphic files
of scale-stable versions of the USGS 1:100,000 topographic maps and coverted to
TIFF images which were then converted to GRIDs. These grids contain no
database information other than position, and are included for reference only.
The base maps used were the Cape Mendocino (1989 edition), Eureka (1987
edition), Garberville (1979 edition), Hayfork (1978 edition) 1:100,000
topographic maps, which all have a 50-meter contour interval. The bathymetry
maps were converted from the Coast and Geodetic Survey hydrographic chart 1308
N-12, 1969.

Related URL
Link: GET DATA
Description: Package for downloading maps for plotting: PostScript files of the map sheets and pamphlet (as a gzip compressed tar file)


Link: VIEW EXTENDED METADATA


Link: VIEW PROJECT HOME PAGE
Description: Includes links to download plotting packages as well as the digital database.


Geographic Coverage
 N: 41.017353 S: 39.982655  E: -123.0  W: -125.029884

Data Set Citation
Dataset Originator/Creator: McLaughlin, R.J.; Ellen, S.D.; Blake, M.C.; Jayko, A.S.; Irwin, W.P.; Aalto, K.R.; Carver, G.A.; Clarke, S.H., Jr.; Barnes, J.B.; Cecil, J.D.; Cyr, K.A.
Dataset Title: Geologic map of the Cape Mendocino, Eureka, Garberville, & southwestern part of the Hayfork 30 X 60 Quadrangles and Adjacent Offshore Area, Northern California
Dataset Release Date: 2000
Dataset Release Place: Menlo Park, CA, USA
Dataset Publisher: U.S. Geological Survey
Version: 1.0
Issue Identification: U.S. Geological Survey Miscellaneous Field Studies Map
Data Presentation Form: geologic map
Online Resource: http://pubs.usgs.gov/mf/2000/2336/


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > Humbolt County
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > Mendocino County
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > Trinity County
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > Tehama County


Science Keywords
TERRESTRIAL HYDROSPHERE >SURFACE WATER >LAKES    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >RIVERS/STREAMS    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENTS    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >STRATIGRAPHIC SEQUENCE    [Definition]
LAND SURFACE >GEOMORPHOLOGY >TECTONIC LANDFORMS/PROCESSES    [Definition]
LAND SURFACE >TOPOGRAPHY >CONTOURS    [Definition]
SOLID EARTH >GEOMORPHIC LANDFORMS/PROCESSES >TECTONIC LANDFORMS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >BEDROCK LITHOLOGY    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >IGNEOUS ROCKS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >METAMORPHIC ROCKS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTS    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >FAULT MOVEMENT    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >FOLDS    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >STRATIGRAPHIC SEQUENCE    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >BATHYMETRY    [Definition]


ISO Topic Category
ELEVATION
GEOSCIENTIFIC INFORMATION
INLAND WATERS
OCEANS


Platform
MAPS    [Information]


Access Constraints
None


Use Constraints
Uses of this digital geologic map should not violate the spatial
resolution of the data. Although the digital form of the data removes
the constraint imposed by the scale of a paper map, the detail and
accuracy inherent in map scale are also present in the digital data.
The fact that this database was edited for a scale of 1:100,000 means
that higher resolution information is not present in the dataset.
Plotting at scales larger than 1:100,000 will not yield greater real
detail, although it may reveal fine-scale irregularities below the
intended resolution of the database. Similarly, where this database
is used in combination with other data of higher resolution, the
resolution of the combined output will be limited by the lower
resolution of these data.


Keywords
geology
bedrock geology
surficial geology
geologic history
Franciscan complex
Coast Range ophiolite
Great Valley sequence
stratigraphic assemblages
geologic structures
South Fork fault
Pine Butte fault
Red Mountain fault
Mule Ridge fault
Grogan fault
Coast Range fault
Sulphur Creek thrust
Coastal belt thrust
Cascadia Megathrust
Cascadia Subduction zone
Mendocino fracture zone
San Andreas fault
Mad River fault zone
Little Salmon fault
Russ fault
Bear River fault zone
Garberville fault zone
Mattole Road lineament
North Fork Road Thrust
King Range thrust zone
Pacific-North American Plate boundary
Mendocino Uplift
Mendocino Triple junction
Pacific Plate
Gorda Plate
North American Plate
Petrolia earthquake
Honeydew earthquake
Alluvial deposits
Marine shoreline and aolian deposits
Undifferentiated nonmarine terrace deposits
Older alluvium
Marine and non-marine overlap deposits
Volcanic Rocks of Fickle Hill
Franciscan Complex
Coastal belt
Coastal Terrane
King Range Terrane
Igneous and sedimnetary rocks of Pt. Delgada
Sandstone and argillite of King Peak
False Cape Terrane
Cantral belt
melange of Central belt
Yager Terrane
Unnamed metasandstone and meta-argillite
Landslide deposits
White Rock metasandstone
Haman Ridge graywacke
Fort Seward metasandstone
Chert
basaltic rocks
Undivided blueschist blocks
Greenstone
metachert
metasandstone of Yolla Bolly terrane, undivided
melange block, lithology unknown
Eastern belt
Pickett Peak terrane
South Fork Mountain Schist
Chinquapin metabasalt member
Valantine Springs Formation
metabasalt and minor metachert
Yolla Bolly Terrane
Taliaferno Metamorphic Complex
Chicago Rock melange
Metagraywacke of Hammerhorn Ridge
serpentinite
Devils Hole Ridge Broken Formation
Little Indian Valley argillite
Rocks of the Yolla Bolly Terrane, undivided
Elder Creek(?) Terrane
mudstone
layered gabbro
serpentinite melange
Del Puerto(?) Terrane
Mudstone
tuffaceous chert
Basaltic flows and keratophyric tuff
Diabase
Undivided serpentinized ultramafic rocks
Undivided Great Valley Sequence
sedimentary rocks
Hayfork Terrane
Eastern Hayfork subterrane
melange and broken formation
Limestone
Western Hayfork subterrane
Hayfork Bally meta-andesite, undivided
Wildwood pluton
clinopyroxenite
Diorite and gabbro plutons
Rattlesnake Creek Terrane
melange
amphibolite
Intermediate to silicic volcanic rocks
Intrusive complex
Plutonic rocks
Ultramafic rocks
Western Klamath Terrane
Smith River subterrane
Galice(?) Formation
pyroclastic andesite
Glen Creek gabbro-ultramafic complex
Serpentinized peridotite
Mesozoic
Jurassic
Cretaceous
Cenozoic
Tertiary
Neogene
Miocene
Pliocene
Quaternary
Pleistocene
Holocene
maps
geologic maps


Data Set Progress
IN WORK


Originating Center
USGS


Data Center
Publications-Western Region,Geological Division, U.S. Geological Survey, U.S. Department of the Interior    [Information]
Data Center URL: http://geopubs.wr.usgs.gov/
Dataset ID: USGS Miscellaneous Field Studies Report MF-2336

Data Center Personnel
Name: CAROLYN A. DONLIN
Phone: 650-329-5015
Fax: 650-329-5119
Email: cdonlin at usgs.gov
Contact Address:
U.S. Geological Survey
Geology Division
345 Middlefield Road
City: Menlo Park
Province or State: California
Postal Code: 94025
Country: USA



Distribution
Distribution_Media: Online (HTTP)
Distribution_Size: 63 Mb
Distribution_Format: PostScript files (as a gzip compressed tar file)
Fees: No fees for digital forms of the report.

Distribution_Media: Online (HTTP)
Distribution_Size: 36 Mb
Distribution_Format: PDF plotfiles (as a gzip compressed tar file)
Fees: No fees for digital forms of the report.

Distribution_Media: 8 mm Exabyte tape, 2.3 GB or 5.0 GB
Distribution_Format: PostScript plotfile package
Fees: No fees for digital forms of the report.

Distribution_Media: 8 mm Exabyte tape, 2.3 GB or 5.0 GB
Distribution_Format: PDF plotfile package
Fees: No fees for digital forms of the report.

Distribution_Media: online (HTTP)
Distribution_Size: 4.7 Mb
Distribution_Format: Arc Info Export (.e00) (as a gzip compressed tar file)
Fees: No fees for digital forms of the report.

Distribution_Media: 8 mm Exabyte tape, 2.3 GB or 5.0 GB
Distribution_Format: Arc Info Export (.e00)
Fees: No fees for digital forms of the report.


Personnel
J.B. BARNES
Role: DIF AUTHOR
Contact Address:
U.S. Geological Survey
345 Middlefield Rd., M/S 975
City: Menlo Park
Province or State: CA
Postal Code: 94025
Country: USA



Creation and Review Dates
Last DIF Revision Date: 2011-07-01

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