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PER_GEO.PAT:
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME
1 AREA 8 18 F 5
9 PERIMETER 8 18 F 5
17 PER_GEO# 4 5 B -
21 PER_GEO-ID 4 5 B -
25 LABL 35 35 C -
60 SHD 3 3 I -
63 PLABL 35 35 C -
98 SHDFIL 3 3 I -
101 NAME 200 200 C -
PER_GEO.AAT:
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME
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 PER_GEO# 4 5 B -
29 PER_GEO-ID 4 5 B -
33 LTYPE 45 45 C -
78 L-SYMB 3 3 I -
| Value | Definition |
|---|---|
| Qaf | Artificial fill |
| Qw | Active-wash deposits |
| Qv | Active valley deposits |
| Qyf | Young alluvial-fan deposits |
| Qya | Young axial-valley floor deposits |
| Qyv | Young alluvial-valley deposits |
| Qof | Old alluvial-fan deposits |
| Qvof | Very old alluvial-fan deposits |
| Qvof1 | Very old alluvial-fan deposits, Unit 1 |
| Qvoa | Very old axial-channel deposits |
| Klmt | Lakeview Mountains pluton, Tonalite |
| Klmm | Lakeview Mountains pluton, Melanocratic tonalite |
| Klmtg | Lakeview Mountains pluton, Tonalite and granodiorite, undifferentiated |
| Klmc | Lakeview Mountains pluton, Comb-layered gabbro |
| Kbpg | Monzogranite of Bernasconi Pass |
| Kbpm | Migmatitic rocks within monzogranite of Bernasconi Pass |
| Ktbh | Tonalite of Bernasconi Hills |
| Kvt | Val Verde pluton, tonalite |
| Kgu | Granite, undifferentiated |
| Kt | Tonalite, undifferentiated |
| Kd | Diorite, undifferentiated |
| Khg | Heterogeneous granitic rocks |
| Khg(s) | Heterogeneous granitic rocks, submerged |
| Mzp | Phyllite and schist |
| KgPz | Mixed metamorphic rocks and granitic rocks |
| Pzs | Biotite schist |
| water | water |
| Perris Reservoir | Perris Reservoir |
| Value | Definition |
|---|---|
| map boundary | |
| contact, certain | |
| Kg, granite pegmatite dike | |
| Kp, granite dike | |
| water boundary |
| Value | Definition |
|---|---|
| igneous foliation | |
| vertical igneous foliation | |
| igneous joint | |
| vertical igneous joint | |
| metamorphic foliation | |
| vertical metamorphic foliation | |
| metamorphic lineation |
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) U.S. Air Force, (3) the California Geological Survey, and (4) the Southern California Areal Mapping Project (SCAMP).
The data set for the Perris 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 Geographic 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.
Online Links:
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints:The Perris 7.5' geologic-map database should be used to evaluate and understand the geologic character of the Perris 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 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 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 most 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 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 Perris 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 and structural features in format ARCE (version 7.2.1) Size: 1.1 |
|---|---|
| Network links: |
http://pubs.usgs.gov/of/2003/0270/per.tar.gz |