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)
|Kmgt||Monzogranite and Tonalite, undivided|
|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|
|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|
|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|
|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|
|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|
|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|
|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.|
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.
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.
Are there legal restrictions on access or use of the data?
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
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 ARCE (version 7.2.1) Size: 2.5|