USGS Geoscience Data Catalog
Additional USGS Geoscience data can be found by geographic location or by publication series.
Matti, Jonathan C. , Morton, Douglas M. , Cox, Brett F. , and Kendrick, Katherine J. , 2003, Geologic map and digital database of the Redlands 7.5' quadrangle, San Bernardino and Riverside Counties, California: U.S. Geological Survey Open-File Report 03-302, U.S. Geological Survey, Menlo Park, California.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Polyconic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.0000001
Ordinates (y-coordinates) are specified to the nearest 0.0000001
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
red_geo (geologic map units and geologic-line entities) red_pts (geologic point features) red_obs (distribution of data stations) red_str (anticlinal and synclinal structures) red_orn (geologic line ornamentation) red_ldr (map-unit label leaders)Three additional INFO data tables are included in the data set: red_summ.rel (provides general information about each geologic-map unit, including general lithologic features, geologic age, and geologic origin which applies to all polygons of a specified map unit)
Value | Definition |
---|---|
Kgd | Granodiorite |
Kmg | Monzogranite |
Kmgt | Monzogranite and Tonalite, undivided |
Kt | Tonalite |
Kt1 | Tonalite, unit 1 |
Mzfg | Foliated granitoid rock |
QTstcq | San Timoteo beds of Frick (1921), quartzite-bearing conglomerate member |
QTstrl | San Timoteo beds of Frick (1921), ripple-laminated member |
QTstr | San Timoteo beds of Frick (1921), Reche Canyon member |
QTstu | San Timoteo beds of Frick (1921), upper member |
Qvya | Very young axial-valley deposits (latest Holocene) |
Qvyf | Very young alluvial-fan deposits (latest Holocene) |
Qvyls | Very young landslide deposits (latest Holocene) |
Qof | Old alluvial-fan deposits |
Qof2 | Old alluvial-fan deposits, Unit 2 |
Qof3 | Old alluvial-fan deposits, Unit 3 |
Qols | Old landslide deposits |
Qvoa3 | Very old axial-valley deposits, Unit 3 |
Qvof1 | Very old deposits of alluvial fans, Unit 1 |
Qvof2 | Very old alluvial-fan deposits, Unit 2 |
Qvof3 | Very old alluvial-fan deposits, Unit 3 |
Qvor | Very old residuum or pedogenic soil |
Qvos | Very old surficial deposits, undifferentiated |
Qvyw | Very young wash deposits, active (latest Holocene) |
Qvyw1 | Very young wash deposits, Unit 1 (latest Holocene) |
Qvyw2 | Very young wash deposits, Unit 2 (latest Holocene) |
Qya1 | Young axial-valley deposits, Unit 1 |
Qya3 | Young axial-valley deposits, Unit 3 |
Qya4 | Young axial-valley deposits, Unit 4 |
Qya5 | Young axial-valley deposits, Unit 5 |
Qyf | Young alluvial-fan deposits |
Qyf1 | Young alluvial-fan deposits, Unit 1 |
Qyf3 | Young alluvial-fan deposits, Unit 3 |
Qyf4 | Young alluvial-fan deposits, Unit 4 |
Qyf5 | Young alluvial-fan deposits, Unit 5 |
Qyls | Young landslide deposits |
gg | Gneissose granitoid rock |
Value | Definition |
---|---|
C17 | .contact.landslide.location observable.location meets map accuracy standard |
C18 | .contact.landslide.location observable.location may not meet map accuracy standard |
C25 | .contact.landslide.crown scarp.location meets map accuracy standard |
C26 | .contact.landslide.crown scarp.location may not meet map accuracy standard |
C29 | .contact.sedimentary.location meets map accuracy standard |
C30 | .contact.sedimentary.location may not meet map accuracy standard |
C34 | .contact.sedimentary.identity questionable.location inferred.location may not meet map accuracy standard |
C37 | .contact.sedimentary.separates terraced alluvial units.location meets accuracy standard |
C38 | .contact.sedimentary.separates terraced alluvial units.location may not meet accuracy standard |
C50 | .contact.igneous.location may not meet accuracy standard |
C98 | .contact.scratch boundary.sedimentary |
CL1 | .cartographic line.map boundary |
F10 | .fault.high-angle.normal slip.location observable.may not meet accuracy standard |
F11 | .fault.high-angle.reverse slip.location observable.location may not meet map accuracy standard |
F17 | .fault.high-angle.reverse slip.location inferred beneath mapped covering unit.location may not meet map accuracy standard |
F19 | .fault.high-angle.unspecified slip.location observable.may not meet map accuracy standard |
F2 | .fault.high-angle.strike slip.right lateral.location observable.meets map accuracy standard |
F20 | .fault.high-angle.strike slip.right lateral.location observable.may not meet accuracy standard |
F22 | .fault.high-angle.normal slip.location observable.may not meet map accuracy standard |
F23 | .fault.high-angle.reverse slip.location observable.may not meet map accuracy standard |
F34 | .fault.high-angle.normal slip.existence questionable.location may not meet map-accuracy standard |
F40 | .fault.high-angle.normal slip.existence questionable.location inferred beneath mapped covering unit.location may not meet map accuracy standard |
F52 | .fault.high-angle.normal slip.fault scarp.meets map accuracy standard |
F58 | .fault.high-angle.normal slip.fault scarp.location may not meet map accuracy standard |
F67R | .fault.high-angle.normal slip.scarp.identity questionable |
F74 | .fault.low-angle.slip unspecified.location observable.location may not meet map-accuracy standard |
Value | Definition |
---|---|
B14 | .bedding attitude.sedimentary.inclined.strike and dip indicated but not measured.original data |
B2 | .bedding attitude.sedimentary.inclined.original data |
B4 | .bedding attitude.sedimentary.vertical.original data |
FC4 | .fault dip direction |
FN13 | .foliation attitude.igneous.inclined.original data |
FN2 | .foliation attitude.origin not determined.inclined.original data |
FN3 | .foliation attitude.origin not determined.vertical.original data |
FN31 | .foliation attitude.strain dominated.inclined.original data |
Value | Definition |
---|---|
NRCS-SWSB-26 | Natural Resources Conservation Service pit/soil profile description |
NRCS-SWSB-15 | Natural Resources Conservation Service pit/soil profile description |
NRCS-SWSB-20 | Natural Resources Conservation Service pit/soil profile description |
NRCS-SWSB-17 | Natural Resources Conservation Service pit/soil profile description |
NRCS-SWSB-23 | Natural Resources Conservation Service pit/soil profile description |
WRD-RV | USGS Water Resources Division well/well-log data |
WRD-CC | USGS Water Resources Division well/well-log data |
Value | Definition |
---|---|
FA41 | .fold axial trace.anticline.upright.plunging.location meets map accuracy standard |
FA44 | .fold axial trace.anticline.upright.plunging.location may not meet map accuracy standard |
FA105 | .fold axial trace.anticline.upright.plunging.location meets map accuracy standard |
FA108 | .fold axial trace.syncline.upright.plunging.location may not meet map accuracy standard |
Value | Definition |
---|---|
FC1 | .fault attribute.bar-and-ball on down-dropped fault block. |
FC2 | .fault attribute.strike-slip arrows.right lateral. |
FAC4 | .fold ornament.anticline.upright axial plane. |
FAC10 | .fold ornament.syncline.upright axial plane. |
FAC17 | .fold ornament.anticline.plunge-direction. |
FAC19 | .fold ornament.syncline.plunge-direction. |
Photogrammetric Geologic Compilation: The U.S. Geological Survey's Photogrammetric Plotter Laboratory in Denver, Colorado (James Messerich, photogrammetrist) provided Kern PG-2 stereographic plotters that enabled the high-precision, high-accuracy transfer of geologic linework and point data from aerial photographs to a scale-stable cartographic base.
Programmatic Credit: Geologic mapping, topical studies, and digital preparation for this database were sponsored jointly by the following: (1) the U.S. Geological Survey's National Cooperative Geologic Mapping Program and National Earthquake Hazards Program; (2) California Geological Survey; (3) San Bernardino Valley Municipal Water District provided funding support for database development.
Scientific Peer Review: The database and plot file benefitted from technical reviews by P. Stone, F.K. Miller, and D. Bedford.
(520) 670-5577 (voice)
(520) 670-5577 (FAX)
jmatti@usgs.gov
The geologic database for the Redlands quadrangle was developed as a contribution to the National Cooperative Geologic Mapping Program's National Geologic Map Database, and is intended to provide a general geologic setting of the quadrangle.
Geologic information contained in the Redlands database is general-purpose data that are applicable to land-related investigations in the earth and biological sciences. The term "general-purpose" means that all geologic-feature classes have minimal information content adequate to characterize their general geologic characteristics and to interpret their general geologic history. However, no single feature class may have enough information to definitively characterize its properties and origin. For this reason the database cannot be used for site-specific geologic evaluations, although it can be used to plan and guide investigations at the site-specific level.
U.S. Geological Survey, 1967, photorevised 1980, Topographic basemap of the Redlands 7.5' quadrangle, southern California: U.S. Geological Survey, Reston, Virginia.
Pictorial Crafts, Inc. (contracted to the U.S. Geologi, 1975, Pictorial Crafts aerial photography.
U.S. Department of Agriculture, Agricultural Stabilization and Conservation , 1952, U.S. Department of Agriculture, Agricultural Stabilization and Conservation Service, 1952 photography (Symbol AXM, AXL).
U.S. Department of Interior, Geological Survey, 1966, U.S. Department of Interior, Geological Survey 1966 photography (symbol GS-VBNS).
U.S. Department of Agriculture, Agricultural Stabilization and Conservation , 1938, U.S. Department of Agriculture, Agricultural Stabilization and Conservation Service, 1938 photography (Symbol AXM, AXL).
Spence Airplane Photos, Los Angeles (flown under contract t, 1930, Spence aerial photography, 1930.
Morton, D.M., 1978, Geologic map of the Redlands quadrangle: U.S. Geological Survey Open-File Report 78-21.
Matti, Jonathan C. , Morton, Douglas C. , Cox, Brett F. , Carson, Scott E. , and Yetter, Thomas J. , 2003, Geologic map and digital database of the Yucaipa 7.5' Quadrangle, San Bernardino and Riverside Counties, California: United States Geological Survey (USGS) Open-File Report 03-301, U.S. Geological Survey, Menlo Park, California.Online Links:
The combination of detailed and reconnaissance techniques used to generate the Redlands
quadrangle database has yielded a data set whose quality necessarily varies from
location to location. Some areas were examined in great detail in order to solve
specific geologic problems or to clarify the description or geologic relations of a
particular map unit. Other areas were examined less carefully or were not examined at
all. As a result, some parts of the Redlands data set have greater attribute accuracy
and represent greater attribute confidence than others.
ATTRIBUTE ACCURACY
The attribute-accuracy statement for the Redlands database incorporates four elements:
(1) map-unit description and attribution, (2) geotechnical standards against which the
observations are measured, (3) map-unit identification, and (4) description of linear
and planar geologic structures.
Map-unit description and attribution:
Geologic-map units in the Redlands quadrangle database were described using standard
field methods (see Process_Description 1 of 6). Consistent with these methods and
consistent with the time available to assemble the data set, the database authors have
assigned standard geologic attributes to geologic lines, points, and polygons identified
in the database.
Geotechnical standards for geologic descriptions:
Plutonic rock classification: Plutonic rocks and their deformed equivalents are
classified in accordance with the International Union of Geological Sciences
Subcommission on the Systematics of Igneous Rocks (1973; Streckeisen, 1976).
Sedimentary rock classifications: Sandstones are classified in accordance with the
scheme suggested by Friedman and Sanders (1978, Table 7-4). For all sedimentary
materials, bedding-thickness classification follows Ingram (1954) and grain-size
classification follows Wentworth (1922).
Surficial-materials classification: Surficial materials are mapped and classified
according to a southern California-wide classification scheme being developed by the
Southern California Areal Mapping Project (SCAMP).
Terminology for slope-failure deposits (landslides and other slope-failure types)
follows Varnes (1978).
Color classification: The matrix color of surficial materials and their pedogenic soils
is classified according to the Munsell soil-color charts (Munsell, 1975). Bedrock
colors also are classified according to the Munsell system, supplemented by the
Rock-Color Chart distributed by the Geological Society of America (reprinted 1970).
Map-unit identification:
Geologic-map units in the Redlands quadrangle represent packages of geologic materials
whose overall physical properties differ sufficiently from other such units as to
constitute discrete mappable entities. From localities in the quadrangle where map
units first were recognized and defined, they were extended to other areas through a
mapping process that includes (a) direct outcrop observation, (b) interpretation of
subsurface boring logs, and (c) aerial-photographic extrapolation into areas where site
observation was not conducted. The coverage red_obs indicates the density of
observation and data stations in the Redlands quadrangle, and is a measure of whether a
map unit at a particular location was identified on the basis of hands-on data or
extrapolation.
Map-unit boundaries (geologic contacts) and faults identified along mapping traverses
typically were extended laterally by using aerial photographs and binoculars to project
or interpolate the contact or fault to its next recorded occurrence along a nearby
traverse. Only rarely were individual geologic contacts or fault lines walked out to
determine their variability and character throughout the map area. The bounding
contacts of surficial units and the location of fault scarps that traverse the units
were plotted by using a PG-2 photogrammetric plotter that allows location accuracy
equivalent to the accuracy standard for the topographic-contour base.
Description geologic structures
Geologic structure (planar structure displayed by lines, structure at specific points)
in the Redlands quadrangle are described and attributed according to the scheme
described by Matti and others (1997a, b). These classifications generally follow
conventional schemes for classifying geologic lines and points (Reynolds and others,
1995).
ATTRIBUTE CONFIDENCE
For version 1.0 of the database, the coverage red_obs is a proxy for attribute
confidence: the number of direct observations within a map unit from place to place in
the quadrangle proxies for the confidence with which the unit and its attributes are
believed to be accurately identified. Future releases of the Redlands data set will
delineate a more objective, empirical basis for map-unit identification and attribute
accuracy (map-unit and attribute confidence).
Friedman, G.M., and Sanders, J.E., 1978, Principles of sedimentology: New York, John
Wiley & Sons, 792 p.
Ingram, R.L., 1954, Terminology for the thickness of stratification and parting units in
sedimentary rocks: Geological Society of America Bulletin, v. 65, p. 937-938.
International Union of Geological Sciences Subcommission on the Systematics of Igneous
Rocks, 1973, Plutonic rocks: Geotimes, v. 18, no. 10, p. 26-30.
Matti, J.C., Powell, R.E., Miller, F.K., Kennedy, S.A., Ruppert, K.R., Morton, G.L., and
Cossette, P.M., 1997a, Geologic-line attributes for digital geologic-map databases
produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0:
U.S.Geological Survey Open-File Report 97-861
Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas,
Catherine, Hauser, R.M., and Cossette, P.M., 1997b, Geologic-point attributes for
digital geologic-map databases produced by the Southern California Areal Mapping Project
(SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-859
Munsell Color, 1975, Munsell soil color charts, 1975 edition: Baltimore, Maryland,
Macbeth Division of Kollmorgen Corporation.
Reynolds, M.W., Queen, J.E., and Taylor, R.B., 1995, Cartographic and digital standard
for geologic map information: U.S. Geological Survey Open-File Report 95-525
Streckeisen A., 1976, To each plutonic rock its proper name: Earth Science Reviews, v.
12, p. 1-33.
Varnes, D.J., 1978, Slope movement types and processes, in Schuster, R.L., and Krizek,
R.J., eds., Landslides: analysis and control: Washington, D.C., Transportation
Research Board, National Academy of Sciences, Special Report 176, p. 11-33.
Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal
of Geology, v. 30, p. 377-392.
Nationwide geologic-map accuracy standards for geologic line and point features have not
been developed and adopted by the U.S. Geological Survey and other earth-science
entities. Until such standards are developed, the Southern California Areal Mapping
Project (SCAMP) uses internal map-accuracy standards for 1:24,000-scale geologic maps
produced by the project.
In the Redlands 1:24,000 scale quadrangle, geologic lines are judged to meet the
map-accuracy standard if they are located to within ±15 meters relative to topographic
or cultural features on the base map. Within the database, line data that are judged to
meet the map-accuracy standard are denoted in the data table lines.rel by the attribute
code .MEE. (meets); line data that may not meet the map-accuracy standard are denoted by
the attribute code .MNM. (may not meet). On geologic-map plots and other plots
generated from the geologic database, line data that are judged to meet the map-accuracy
standard are denoted by solid lines; line data that may not meet the map-accuracy
standard are denoted by dashed or dotted lines.
In the database and on geologic-map plots, no cartographic device exists for denoting
the map-accuracy for geologic-point data (symbols for bedding, foliation, lineations,
etc.).
Three sources of positional error exist for geologic elements in the Redlands quadrangle
database:
(1) Positional accuracy of field observations: observation stations (data localities)
were located either on aerial photographs or on the topographic basemap of the Redlands
quadrangle by referencing hypsographic and planimetric features on the basemap.
(2) Transfer of line and point data from aerial photographs to the topographic base: For
bedrock geologic materials, point data, contacts and faults were visually transferred to
scale-stable copies of the topographic base map. For most surficial geologic materials,
geologic contacts and fault scarps were transferred to the base map through the use of a
PG-2 sterographic plotter that allows geologic elements to be located with an accuracy
and precision equivalent to the standard for the topographic-contour base.
(3) Positional fidelity during digital data processing: the maximum transformation Root
Mean Square (RMS) error acceptable for 7.5' quadrangle transformation and data input is
0.003 (1.8 meters). The horizontal positional accuracy line and point entities was
checked by visual comparison of hard-copy plots with base-stable source data.
The geologic map and digital database of the Redlands 7.5' quadrangle contain new data
that have been subjected to scientific peer review and are a substantially complete
representation of the current state of knowledge concerning the geology of the
quadrangle.
Information for geologic units, geologic contacts, and faults by necessity is
generalized. Although derived from data collected at individual observation stations,
the characteristics of map units, their bounding contacts, and faults have been averaged
and reduced to attributes that describe each map unit and each line element as a whole.
This averaging process is necessary because of the intrinsic variability that geologic
units, contacts, and faults display spatially: in detail, their characteristics
necessarily vary from place-to-place, although certain core attributes persist. To
account for this variability and yet still characterize the major defining attributes of
geologic entities, the database authors have selected and archived certain geologic
characteristics but omitted others. In such cases, details were sacrificed in the
interest of defining the average character of the geologic features.
Map-unit completeness: For map-unit polygons, version 1.0 of the Redlands database does
not exploit the full potential afforded by the data-model and attribute scheme proposed
by Matti and others (1997a). The file red_geo.pat contains limited information about
polygon themes such as geologic age and the thickness of geologic-map units (where
appropriate or where known), as well as information about unique attributes that
distinguish a map unit within a polygon or a perticular subset of polygons. Additional
lithologic-attribute data are available in the INFO data table red_summ.rel, including
age-related data and major rock type. Other than this minimal information, however, the
Redlands database for geologic-map units (red_geo) lacks the comprehensive information
content of the .pdf files (red_dmu.pdf and red_cmu.pdf).
The following data fields in the INFO table red_geo.pat for the geologic-map unit
coverage contain no information:
THICK: Information about the stratigraphic thickness of geologic units is not included
because such information was not obtained for digital version 1.0 of the Redlands
quadrangle database.
SOURCE: Information about the source of geologic information for geologic map units is
not included because in all cases such information for the Redlands database derives
from the database authors.
Line and Point Completeness: For line and point data, the Redlands database exploits the
attribution scheme proposed by Matti and others (1997a,b). This scheme allows geologic
elements represented as lines (geologic contacts, faults, fold axes, geomorphic
features) and points (bedding orientations, foliation orientations, fault dips) to be
assigned a full spectrum of attributes ranging from contact and fault type to geologic
age of linear and point features. Some of these attributes are embedded directly within
the line and point data bases (.aat and .pat, respectively). Most line and point
attributes are stored as codes in two INFO data tables (lines.rel and points.rel).
A complete description of the attribute-coding schemes for SCAMP polygon, line, and
point data is available in U.S. Geological Survey Open-File Reports OF-97-859,
OF-97-860, and OF-97-861 (full source citations follow):
Matti, J.C., Powell, R.E., Miller, F.K., Kennedy, S.A., Ruppert, K.R., Morton, G.L., and
Cossette, P.M., 1997a, Geologic-line attributes for digital geologic-map databases
produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.
Geological Survey Open-File Report 97-861
URL:<http://geopubs.wr.usgs.gov/wgmt/scamp/scamp.html>
Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas,
Catherine, Hauser, R.M., and Cossette, P.M., 1997b, Geologic-point attributes for
digital geologic-map databases produced by the Southern California Areal Mapping Project
(SCAMP), Version 1.0: U.S. Geological Survey Open-File Report 97-859
URL:<http://geopubs.wr.usgs.gov/docs/ncgm/scamp/scamp.html>
Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., and Cossette, P.M., 1997c,
Geologic-polygon attributes for digital geologic-map databases produced by the Southern
California Areal Mapping Project (SCAMP), Version 1.0: U.S. Geological Survey Open-File
Report 97-860
URL:<http://geopubs.wr.usgs.gov/docs/ncgm/scamp/scamp.html>
Polygon and chain-node topology present.
The areal extent of the map is represented digitally by an appropriately projected
(Polyconic projection), mathematically generated box. Consequently, polygons intersecting
the lines that comprise the map boundary are closed by that boundary. Polygons internal
to the map boundary are completely enclosed by line segments that are themselves a set of
sequentially numbered coordinate pairs. Point data are represented by coordinate pairs.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- The Redlands 7.5' geologic-map database should be used to evaluate and understand the geologic character of the Redlands quadrangle as a whole. It should not be used as a detailed map for purposes of site-specific land-use planning or site-specific geologic evaluations.
The database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides and posed by ground subsidence and earthquake-generated ground shaking. However, it is not sufficiently detailed for site-specific determinations or evaluations of these features. Faults shown do not take the place of fault-rupture hazard zones designated by the California State Geologist (see Hart, 1988).
Use of the Redlands geologic-map database should not violate the spatial resolution of the data. Although the digital form of the data allows the scale to be manipulated at the discretion of the user, detail and accuracy issues that are inherent to map-scale limitations similarly exist in the digital data. The fact that this database was constructed and edited at a scale of 1:24,000 means that higher-resolution data generally are not present in the dataset. Therefore, plotting at scales larger than 1:24,000 will not yield greater real detail, although enlarged plots may reveal fine-scale (artificial) irregularities below the intended resolution of the database. Although the data set may incorporate higher-resolution data at a few places, the resolution of the combined data-base output will be limited by the lower-resolution data.
Hart, E.W., 1988, Fault-rupture zones in California; Alquist-Priolo Special Studies Zones Act of 1972 with index to special studies zones maps: California Division of Mines and Geology Special Publication 42
303-202-4700 (voice)
303-202-4693 (FAX)
The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.
In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS.
The Geologic Map and Digital Database of the Redlands 7.5' Quadrangle, San Bernardino and Riverside Counties, California, 1:24,000 map-scale, and any derivative maps thereof, is not meant to be used or displayed at any scale larger than 1:24,000 (e.g., 1:12,000).
Data format: | Geologic units and structural features in format ArcInfo export (version 7.2.1) Size: 2.5 megabytes |
---|---|
Network links: |
<http://geopubs.wr.usgs.gov/open-file/of03-302/red.tar.gz> |
509-368-3123 (voice)
509-368-3199 (FAX)
pcossette@usgs.gov