Online Links:
| Value | Definition |
|---|---|
| Qw | Modern wash deposits |
| Qw2 | Modern wash deposits, Unit 2 |
| Qw1 | Modern wash deposits, Unit 1 |
| Qf | Modern alluvial-fan deposits |
| Qf1 | Modern alluvial-fan deposits, Unit 1 |
| Qc | Modern colluvial deposits |
| Qt | Modern talus deposits |
| Qls | Modern landslide deposits |
| Qs | Modern surficial deposits, undifferentiated |
| Qyf | Young alluvial-fan deposits |
| Qyf5 | Young alluvial-fan deposits, Unit 5 |
| Qyf4 | Young alluvial-fan deposits, Unit 4 |
| Qyf3 | Young alluvial-fan deposits, Unit 3 |
| Qyf2 | Young alluvial-fan deposits, Unit 2 |
| Qyf1 | Young alluvial-fan deposits, Unit 1 |
| Qya5 | Young alluvial-valley deposits, Unit 5 |
| Qya4 | Young alluvial-valley deposits, Unit 4 |
| Qya3 | Young alluvial-valley deposits, Unit 3 |
| Qyls | Young landslide deposits |
| Qof | Old alluvial-fan deposits |
| Qof3 | Old alluvial-fan deposits, Unit 3 |
| Qof2 | Old alluvial-fan deposits, Unit 2 |
| Qols | Old landslide deposits |
| Qoe | Old eolian deposits |
| Qos | Old surficial deposits, undifferentiated |
| Qvof3 | Very old alluvial-fan deposits, Unit 3 |
| Qvof2 | Very old alluvial-fan deposits, Unit 2 |
| Qvof1 | Very old alluvial-fan deposits, Unit 1 |
| Qvols | Very old landslide deposits |
| Tc | Conglomerate and arkose |
| Tcc | Conglomerate of Crestline |
| Tgr | Hypabyssal granitic dikes |
| Kmg | Biotite monzogranite |
| Mzps | Pelona Schist |
| Mzgr | Granitic rocks, undivided |
| Mzlg | Granodiorite of Lake Gregory |
| Mzc | Quartz monzonite of Crestline |
| Mzdc | Gneiss of Devils Canyon |
| Ja | Granodiorite of Arrowhead Peak |
| Trcp | Monzonite of Cedarpines Park |
| Pzcu | Carbonate rocks |
| Value | Definition |
|---|---|
| C1 | Contact, generic, location meets map accuracy standard |
| C2 | Contact, generic, location may not meet map accuracy standard |
| C17 | Contact, landslide, location meets map accuracy standard |
| C18 | Contact, landslide, 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 |
| C31 | Contact, sedimentary, inferred, location may not meet map accuracy standard |
| C37 | Contact, sedimentary, separates terraced alluvial units, location meets map accuracy standard |
| C49 | Contact, igneous, location meets map accuracy standard |
| C50 | Contact, igneous, location may not meet map accuracy standard |
| C51 | Contact, igneous, inferred, location may not meet map accuracy standard |
| C54 | Contact, igneous, identity questionable, inferred, location may not meet map accuracy standard |
| C65 | Contact, metamorphic, location meets map accuracy standard |
| C99 | Contact, igneous, scratch boundary |
| CL1 | Cartographic line, map boundary |
| F1 | Fault, high angle, slip unspecified, generic, location meets map accuracy standard |
| F2 | Fault, high angle, strike slip, right lateral, location meets map accuracy standard |
| F5 | Fault, high angle, reverse slip, location meets map accuracy standard |
| F7 | Fault, high angle, slip unspecified, location meets map accuracy standard |
| F8 | Fault, high angle, slip unspecified, location may not meet map accuracy standard |
| F11 | Fault, high angle, reverse slip, location may not meet map accuracy standard |
| F13 | Fault, high angle, strike slip, right lateral, location may not meet map accuracy standard |
| F14 | Fault, high angle, strike slip, right lateral, inferred, location may not meet map accuracy standard |
| F19 | Fault, high angle, slip unspecified, inferred beneath mapped covering unit, location may not meet map accuracy standard |
| F20 | Fault, high angle, strike slip, right lateral, inferred beneath mapped covering unit, location may not meet map accuracy standard |
| F53 | Fault, high angle, reverse slip, scarp, location meets map accuracy standard |
| F54 | Fault, high angle, oblique slip, scarp, location meets map accuracy standard |
| Value | Definition |
|---|---|
| B2 | Bedding, inclined, sedimentary rocks |
| B7 | Bedding, overturned, sedimentary rocks |
| FN42 | Foliation, metamorphic, inclined |
| L1 | Lineation, origin not determined |
| L22 | Lineation, metamorphic, aligned minerals |
| L37 | Lineation, metamorphic, minor fold axes |
| Value | Definition |
|---|---|
| FC2 | Fault attribute, strike slip arrows, right lateral |
| FC4 | Fault dip, direction and amount |
Technical review by D. M. Morton led to significant improvements that eventually were reflected in aspects of the database, the plot file, and in the description of the geologic units of the San Bernardino North 7.5' quadrangle.
Geologic mapping and digital preparation of this report were sponsored jointly by (1) the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, (2) the California Division of Mines and Geology, and (3) the Southern California Areal Mapping Project (SCAMP). In our digital preparation of the data set, carried out in the Geographic Information System laboratory of the Mineral Resources Program of the U.S. Geological Survey in Spokane, Washington by Pamela M. Cossette, we received valuable assistance from Paul C. Hyndman in Spokane, Washington, and from Rachel Hauser at the SCAMP Geographic Information System laboratory in Riverside, California.
The data set for the San Bernardino North 7.5' quadrangle was prepared under the U.S. Geological Survey Southern California Areal Mapping Project (SCAMP) as part of an ongoing effort to develop a regional geologic framework of southern California, and to utilize a Geographical Information System (GIS) format to create regional digital geologic databases. These regional databases are being developed as contributions to the National Geologic Map Database of the National Cooperative Geologic Mapping Program of the USGS.
The digital geologic map database for the San Bernardino North 7.5' quadrangle has been created as a general-purpose data set that is applicable to other land-related investigations in the earth and biological sciences. For example, it can be used for groundwater studies in the San Bernardino basin, and for mineral resource evaluation studies, animal and plant habitat studies, and soil studies in the San Bernardino National Forest. The database is not suitable for site-specific geologic evaluations.
Scale (X,Y) = (609.192,609.439) Skew (degrees) = (-0.010) Rotation (degrees) = (-0.047) Translation = (-6429.281,-865.476) RMS Error (input,output) = (0.001,0.358) Affine X = Ax + By + C Y = Dx + Ey + F A = 609.191 B = 0.397 C = -6429.281 D = -0.504 E = 609.439 F = -865.476
Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:The San Bernardino North 7.5' geologic-map database should be used to evaluate and understand the geologic character of the San Bernardino North 7.5' quadrangle as a whole. The data should not be used for purposes of site-specific land-use planning or site-specific geologic evaluations. The database is sufficiently detailed to identify and characterize geologic materials and structures. However, it is not sufficiently detailed for site-specific determinations.
Use of this digital geologic map database 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 compiled and edited at a scale of 1:24,000 means that higher resolution information may not have been uniformly retained in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, although higher resolution data is incorporated in parts of the map, the resolution of the combined output will be limited by the lower resolution data.
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.
This digital, geologic map database of the San Bernardino North 7.5' quadrangle, 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, structures, point features, and ancillary data (shade sets) in format ARCE (version 7.2.1) Size: 2.6 |
|---|---|
| Network links: |
http://pubs.usgs.gov/of/2001/0131/sbnorth.tar.gz |
