Identification Information:
Citation: The Redlands Institute, University of Redlands
Title: Digital Major Faults of Southern California
Original Citation Information:
Originator: Richard L. Dart, Michael N. Machette, Diane Burns, Geoffrey D. Faneros,
Jason D. Little, and Jennifer R. Davis
Publication Date: 2000
Publication Time: Unknown
Title: Digital Database of Faults from the Fault Activity Map of California and Adjacent Areas
Edition: Version 1.0
Series Information:
Series Name: CD-ROM
Issue Identification: 2000-006
Publication Information:
Publication Place: Sacramento, California
Publisher: Department of Conservation, Division of Mines and Geology
Other Citation Details: Jennings (1994) should be cited when referring to contents of
this database. See Cross Reference below for proper citation.
Description: Digital representation of major faults in Southern California depicted by Southern California
Earthquake Data Center (SCEDC) on 'Faults of Southern California'.
http://www.scecdc.scec.org/faultmap.html
Original Abstract: This digital database contains the faults shown on the Fault Activity Map of California
and Adjacent Areas by Charles W. Jennings published in 1994. The map shows the locations
of known faults that can be portrayed at 1:750,000 scale and indicates the latest age
when displacements took place according to available data. The displacements may have
been associated with earthquakes or may have been the result of gradual creep along the
fault surface. The faults are separated into five categories: historic, Holocene, late
Quaternary, Quaternary, and pre-Quaternary. Many faults in Nevada and Baja California
shown on the published map are not in this digital database. The late Cenozoic faults
in the Foothills Fault Zone are included with the pre-Quaternary faults.
Original Purpose: To provide information for those concerned with land use on or near geologic faults
in California.
Supplemental Information: This database should be used in conjunction with the published version
of the Fault Activity Map of California and Adjacent Areas available from
the California Department of Conservation, Division of Mines and Geology
(DMG) by mail: P.O. Box 2980, Sacramento, CA 95812-2980 or by phone
(916) 445-5716. The map is also available from DMG offices in San Francisco
(415) 904-7707 and Los Angeles (213) 239-0878.
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 9/11/2001
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: No updates or revisions are anticipated
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -120.4456
East Bounding Coordinate: -114.5448
North Bounding Coordinate: 32.3596
South Bounding Coordinate: 37.0654
Keywords:
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Fault Map
Theme Keyword: Faults
Theme Keyword: Fault Activity
Theme Keyword: Tectonics
Place:
Place Keyword Thesaurus: None
Place Keyword: California
Place Keyword: Nevada
Place Keyword: USA
Place Keyword: Oregon
Stratum:
Stratum Keyword Thesaurus: None
Temporal:
Temporal Keyword Thesaurus: None
Temporal Keyword: Historic
Temporal Keyword: Holocene
Temporal Keyword: late-Quaternary
Temporal Keyword: Quaternary
Temporal Keyword: pre-Quaternary
Access Constraints: None
Use Constraints: Acknowledge linework from California Department of Conservation, Division of Mines and
Geology, "Modified from, California Division of Mines and Geology, CD-ROM 2000-006 (2000),
Digital Database of Faults from the Fault Activity Map of California and Adjacent Areas."
Acknowledge line attribute information from Southern California Earthquake Data Center (SCEDC)
Point of Contact: The Redlands Institute, University of Redlands
Contact Address:
Address Type: mailing and physical address
Address: 1200 E. Colton Ave.
City: Redlands
State or Province: California
Postal Code: 92373
Country: USA
Contact Voice Telephone: (909) 335-5268
Contact Facsimile Telephone: (909) 307-6952
Contact Electronic Mail Address: lewis@institute.redlands.edu
Original Contact Information:
Contact Person Primary:
Contact Person: David L. Wagner
Contact Organization: California Department of Conservation, Division of Mines and Geology
Contact Position: Senior Geologist
Contact Address:
Address Type: mailing and physical address
Address: 801 K Street, MS 12-31
City: Sacramento
State or Province: California
Postal Code: 95814
Country: USA
Contact Voice Telephone: (916) 324-7380
Contact Facsimile Telephone: (916) 322-4765
Contact Electronic Mail Address: dwagner@consrv.ca.gov
Data Set Credit: The Redlands Institute, University of Redlands; California Department of Conservation,
Division of Mines and Geology,U.S. Geological Survey; Southern California Earthquake Data Center
Cross Reference:
Citation Information:
Originator: Jennings, C.W. (compiler) with assistance from G.J. Saucedo
Publication Date: 1994
Publication Time: Unknown
Title: Fault Activity Map of California and Adjacent Areas
Series Information:
Series Name: Geologic Data Map Series
Issue Identification: No. 6
Publication Information:
Publication Place: Sacramento, CA
Publisher: California Department of Conservation, Division of Mines and Geology
Scale: 1:750,000
Native Data Set Environment: ArcInfo NT
Projection: UTM, Zone 11, Units: Meters, Datum: NAD 27
Original Data Quality Information:
Attribute Accuracy:
Original Attribute Accuracy Report: Faults are attributed in terms of recency of movement. Initial
editing of Quaternary faults was done by U.S. Geological Survey staff. Additional editing and final
proofing was done by Division of Mines and Geology staff. The attribute accuracy was tested by
overlaying the original mylars on plots of each category of faults to see that they match.
Quantitative Attribute Accuracy Assessment:
Attribute Accuracy Explanation: This database is a faithful digital representation of most
faults on the Fault Activity Map of California and Adjacent Areas. Users of this database
should be aware of the difference between precision and accuracy. While digital data can be
reproduced precisely at any scale, the accuracy of the data remains constant. As the scale is
increased from 1:750,000, uncertainty and errors in fault location remain the same. Also the
user is cautioned that the faults in this database are not necessarily the same as those depicted
on the 1:24,000-scale DMG Earthquake Fault Zone Maps. Although the author of the Fault Activity
Map attempted to make the fault map consistent with the Earthquake Fault Zone Maps, the evaluation
criteria for the maps are different so the depiction of faults may differ significantly.
Faults in the Fault Activity Map and Geologic Map of California Databases -
Fault locations in the digital databases for the Fault Activity Map and the Geologic Map
of California are similar but not identical. The representation of faults in the digital
database for the Geologic Map of California is the same as those of the Fault Map of
California, published in 1975 (Jennings, 1985 p.56). Faults depicted on the Fault Activity
Map of California and Adjacent Areas, published in 1994, were revised using the results of
20 years of research conducted since the earlier publication. The new map was redrafted
and scribed on a new edition of the base map, which is significantly different from the
previous version. Faults in the database for the Fault Activity Map are those of the 1994
map. Although the differences are not readily apparent on the printed versions of the maps,
differences, particularly in location, will be obvious if the digital versions of the faults
are superimposed. See Division of Mines and Geology Bulletin 201 (Jennings,1985) and An
Explanatory Text to Accompany the Fault Activity Map of California and Adjacent Areas
(Jennings,1994) for more information on the sources of the datasets.
Logical Consistency Report: Dataset is consistent with the Fault Activity Map of California (Jennings, 1994).
Completeness Report: The dataset contains major faults depicted by Southern California Earthquake Data Center
(SCEDC) on 'Faults of Southern California' based on the Fault Activity Map of California
(Jennings, 1994).
Original Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: The faults were digitized at the same scale as the
published map, 1:750,000 or 1 inch equals approximately 12 miles. The theoretical accuracy
of the published map is about 0.012 inch, the width of the fault lines, which is equivalent
to 232 meters (760 feet) on the ground. However, plotting and drafting errors can and do
significantly increase the uncertainty. For example, a plotting error of a line width at
1:750,000 scale could cause a location error of 464 meters (approximately 1520 feet) on
the ground.
Lineage:
Source Information:
Source Citation:
Original Citation Information:
Originator: Jennings, C.W. (compiler) with assistance from G.J. Saucedo
Publication Date: 1994
Publication Time: Unknown
Title: Fault Activity Map of California and Adjacent Areas
Series Information:
Series Name: Geologic Data Map Series
Issue Identification: No. 6
Publication Information:
Publication Place: Sacramento, CA
Publisher: California Department of Conservation, Division of Mines and
Geology
Source Scale Denominator: 750000
Type of Source Media: stable-base material
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 1994
Time of Day: Unknown
Source Currentness Reference: publication date
Source Citation Abbreviation: 2.5.1.1
Source Information:
Source Citation:
Original Citation Information:
Originator: Southern California Earthquake Data Center (SCEDC)
Publication Date: Unknown
Publication Time: Unknown
Title: Faults of Southern California
Series Information:
Series Name:
Issue Identification:
Publication Information:
Publication Place: Los Angeles, CA
Publisher: Southern California Earthquake Data Center (SCEDC)
Source Scale Denominator: unknown
Type of Source Media: html
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: Unknown
Time of Day: Unknown
Source Currentness Reference: publication date
Source Citation Abbreviation:
Process Step:
Process Description: Original data set was reprojected to UTM, Zone 11. Linework from California
Division of Mines and Geology,CD-ROM 2000-006(2000)'Digital Database of Faults from
the Fault Activity Map of California and Adjacent Areas' was selected based on it's
match to linework of major faults on 'Faults of Southern California' in Southern
California depicted by Southern California Earthquake Data Center (SCEDC) and put into a
new 'maj_faults' coverage. Original line attribute data was retained. ArcInfo 'additem'
was used to attribute the arcs with fault descriptions found on
http://www.scecdc.scec.org/faultmap.html
Process Date: 09/11/2001
Process Contact: The Redlands Institute, University of Redlands
Contact Address:
Address Type: mailing and physical address
Address: 1200 E. Colton Ave.
City: Redlands
State or Province: California
Postal Code: 92373
Country: USA
Contact Voice Telephone: (909) 335-5268
Contact Facsimile Telephone: (909) 307-6952
Contact Electronic Mail Address: lewis@institute.redlands.edu
Original Process Description: This data set was created by scanning the 1:750,000-scale mylar
overlays of the faults shown on Jennings (1994) using ARC/INFO software.
Scanning, vectorization, and initial editing of the Quaternary faults
were done by Richard Dart and Michael Machette of the U.S. Geological
Survey in Denver. Additional editing was done by Diane Burns and
Geoffrey Faneros of the Division of Mines and Geology (DMG) in Sacramento.
The pre-Quaternary faults were digitized by Geoffrey Faneros and Jason
Little of DMG. The late Cenozoic faults in the Foothills Fault Zone are
included with the pre-Quaternary faults and were digitized by Jennifer
Davis of DMG. George Saucedo and David Wagner of DMG did proofing of both
the initial and the final editing.
Original Process Date: Unknown
Original Process Contact:
Contact Information:
Original Contact Person Primary:
Contact Person: David L. Wagner
Contact Organization: California Department of Conservation, Division of Mines
and Geology
Contact Position: Senior Geologist
Contact Address:
Address Type: mailing and physical address
Address: 801 K Street, MS 12-31
City: Sacramento
State or Province: California
Postal Code: 95814
Country: USA
Contact Voice Telephone: (916) 324-7380
Contact Facsimile Telephone: (916) 322-4765
Contact Electronic Mail Address: dwagner@consrv.ca.gov
Spatial Data Organization Information:
Direct Spatial Reference Method: Vector
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: Universal Transmercator, Zone 11
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Planar Distance Units: meters
Geodetic Model:
Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206
Denominator of Flattening Ratio: 294.9786982
Original Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: Lambert Conformal Conic
Lambert Conformal Conic:
Standard Parallel: 33
Standard Parallel: 45
Longitude of Central Meridian: -119
Latitude of Projection Origin: 0
False Easting: 0
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Planar Distance Units: meters
Geodetic Model:
Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206
Denominator of Flattening Ratio: 294.9786982
Entity and Attribute Information:
LINE ATTRIBUTES FOR CDMG_MAJFAULT.AAT
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED?
1 FNODE# 4 5 B - -
5 TNODE# 4 5 B - -
9 LPOLY# 4 5 B - -
13 RPOLY# 4 5 B - -
17 LENGTH 8 18 F 5 -
25 CDMG_MAJFAULT# 4 5 B - -
29 CDMG_MAJFAULT-ID 4 5 B - -
33 LTYPE 35 35 C - -
68 LVALUE 3 3 I - -
71 AGE 10 10 C - -
81 NAME 100 100 C - -
181 FTYPE 100 100 C - -
281 SLIPRATE 50 50 C - -
331 PROB_MAG 20 20 C - -
351 LAST_RUPTURE 50 50 C - -
FNODE# - Internal number of the from-node
TNODE# - Internal number of the to-node
LPOLY# - Left polygon number
RPOLY# - Right polygon number
LENGTH - Length in meters
CDMG_MAJFAULT# - This is a unique internally assigned identification number
CDMG_MAJFAULT-ID - User assigned identification number
LTYPE- Dashed-approximately located; dotted-concealed; solid-well located. (A CDMG original line attribute.)
LVALUE - 1 - solid; 2 - dashed; 3 - dotted. (A CDMG original line attribute.)
AGE - Age of fault. (A CDMG original line attribute.)
NAME - Name of Fault or Fault Zone. (A SCEDC line attribute.)
FTYPE - Fault type. (A SCEDC line attribute.)
SLIPRATE - Slip rate in mm per year. (A SCEDC line attribute.)
PROB_MAG - The probable magnitude of a future event given current research and information. (A SCEDC line attribute.)
LAST_RUPTURE - Last major rupture. (A SCEDC line attribute.)
Original Overview Description:
Entity and Attribute Overview: ARC/INFO -
The digital database consists of five ARC coverages representing the five subdivisions of the
faults. These coverages have been converted into ARC/INFO uncompressed export files (.e00)
and must be converted by the user into ARC coverages using the import command. The export
files and descriptions are as follows: Historic.e00 -Faults with historic displacement;
Holocene.e00 - Faults with Holocene displacement; Latequat.e00 - Faults with late Quaternary
displacement; Quat.e00 - Faults with Quaternary displacement; Prequat.e00 - Faults with
pre-Quaternary displacement. There are two additional ARC coverages containing base materials:
Statemap.e00 - California state boundary; County.e00 - California county boundaries.
Field definition terms and contents of the arc attribute tables (.aat) are described below.
MAPINFO - The digital database consists of ten MAPINFO.TAB files representing the five
subdivisions of the faults and their accompanying tic files. These data have been converted
into MAPINFO files from ARC/INFO uncompressed export files (.e00) using ARCLINK software.
The files and descriptions are as follows: Historic_line.tab - Faults with historic displacement;
Historic_tic.tab - Tic marks; Holocene_line.tab - Faults with Holocene displacement;
Holocene_tic.tab - Tic marks; Latequat_line.tab - Faults with late Quaternary displacement;
Latequat_tic.tab - Tic marks; Quat_line.tab - Faults with Quaternary displacement;
Quat_tic.tab - Tic marks; Prequat_line.tab - Faults with pre-Quaternary displacement;
Prequat_tic.tab - Tic marks. There are two additional MAPINFO files containing base materials:
Statemap_line.tab - California state boundary; Statemap_tic.tab - Tic marks; County_line.tab -
California county boundaries; County_tic.tab - Tic marks. Field definition terms and table
structure are described below.
Entity and Attribute Detail Citation: ARC/INFO -
Field Definition Terms: ITEM NAME - name of the database field (item); WIDTH - maximum number
of digits or characters stored; OUTPUT - output width; TYPE - B-binary integer, F-binary
floating point number, I-ASCII integer, C-ASCII character string; N.DEC. - number of decimal
places maintained for floating point numbers. Contents of the Arc Attribute Tables (.AAT) -
(ITEM NAME, WIDTH, OUTPUT, TYPE, N. DEC, description): FNODE#, 4, 5, B, -, starting node of arc
(from node); TNODE#, 4, 5, B, -, ending node of arc (to node); LPOLY#, 4, 5, B, -, polygon to
the left of the arc; RPOLY#, 4, 5, B, -, polygon to the right of the arc; LENGTH, 4, 12, F, 3,
length of arc in meters; <coverage>#, 4, 5, B, -, unique internal control number; <coverage>-ID,
4, 5, B, -, unique identification number; LTYPE, 35, 35, C, -, line type; LVALUE, 3, 3, I, -,
line value. Line Types Recorded in the LTYPE Field: (on land) solid - well located; dashed -
approximately located or inferred; dotted - concealed; (offshore) solid - well defined; dashed -
inferred. Line Values Recorded in the LVALUE Field: 1 - solid; 2 - dashed; 3 - dotted.
MAPINFO - Field definition terms: FIELDS - names of the fields (columns) in table; TYPE -
Character-alphanumeric character, Float-number stored in floating-point decimal form,
Integer-Integer between -32,768 and +32,768; WIDTH - number of characters stored in the field.
MAPINFO Table Structure - for faults (FIELD, TYPE, WIDTH, description): FNODE_, Integer, -,
starting node of arc (from node); TNODE_, Integer, -, ending node of arc (to node); LPOLY_,
Integer, -, polygon to the left of the arc; RPOLY_, Integer, -, polygon to the right of the arc;
LENGTH, Float, -, length of arc in meters; <filename>_, Integer, -, unique internal control
number; <filename>_ID, Integer, -, unique identification number; LTYPE, Character, 8, line type
LTYPE; LVALUE, Integer, -, defined field used to represent LTYPE. Line Types Recorded in the
LTYPE Field: (on land) solid - well located; dashed - approximately located or inferred; dotted
- concealed; (offshore) solid - well defined; dashed - inferred. Line Values Recorded in the
LVALUE Field: 1 - solid; 2 - dashed; 3 - dotted. Table Structure - for tics (FIELD, TYPE,
WIDTH, description): IDTIC, Integer, -, id number assigned to each tic; XTIC, Float, -,
longitude of tic; YTIC, Float, -, latitude of tic.
Distribution Information:
Contact: The Redlands Institute, University of Redlands
Contact Address:
Address Type: mailing and physical address
Address: 1200 E. Colton Ave.
City: Redlands
State or Province: California
Postal Code: 92373
Country: USA
Contact Voice Telephone: (909) 335-5268
Contact Facsimile Telephone: (909) 307-6952
Contact Electronic Mail Address: lewis@institute.redlands.edu
Original Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: California Division of Mines and Geology
Contact Address:
Address: P.O. Box 2980
City: Sacramento
State or Province: CA
Postal Code: 95812-2980
Distribution Liability: "The Department of Conservation makes no warranties as to the suitability of
this product for any particular purpose."
SCEDC disclaimer - "These maps should not be considered as zoning guides, nor be used
for risk assessment. Because of the sheer number of faults in southern California,
this is not an exhaustive collection. The faults featured within this section were
chosen typically because they are larger and/or exhibit more recent offset
than others. Most, if not all, of this material has a certain level of uncertainty
to it. Our understanding of faults is constantly expanding, and new faults and
better data may be added to these maps as our knowledge about these structures
advances."
Original Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ARC/INFO export - (MAPINFO)
Format Version Number: 7.1.1 - (4.5)
Digital Transfer Option:
Offline Option:
Offline Media: CD-ROM
Original Custom Order Process: This product can also be ordered by phone using VISA, MasterCard, or American
Express or by mail with check, money order or credit card through any DMG office.
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date:
Metadata Reference Information:
Metadata Date: 10/22/2001
Metadata Review Date:
Metadata Future Review Date:
Contact: The Redlands Institute, University of Redlands
Contact Address:
Address Type: mailing and physical address
Address: 1200 E. Colton Ave.
City: Redlands
State or Province: California
Postal Code: 92373
Country: USA
Contact Voice Telephone: (909) 335-5268
Contact Facsimile Telephone: (909) 307-6952
Contact Electronic Mail Address: lewis@institute.redlands.edu
Original Metadata:
Metadata Date: 6/22/2000
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: George J. Saucedo
Contact Organization: California Department of Conservation, Division of Mines and Geology
Contact Position: Associate Geologist
Contact Address:
Address Type: mailing and physical address
Address: 185 Berry Streeet, Suite 210
City: San Francisco
State or Province: CA
Postal Code: 94107-1728
Country: USA
Contact Voice Telephone: (415) 904-7726
Contact Facsimile Telephone: (415) 904-7715
Contact Electronic Mail Address: gsaucedo@consrv.ca.gov
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata