BTLRPK_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 BTLRPK_GEO# 4 5 B - 21 BTLRPK_GEO-ID 4 5 B - 25 TAG 25 25 C - 50 LABL 35 35 C - 85 PLABL 35 35 C - 120 SHD 3 3 I - 123 SHDFIL 3 3 I - 126 SHDPS 3 3 I - 129 NAME 200 200 C -TAG enables identification of polygons, within a unit, of which the geology is sufficiently distinct from that of the overall unit. The default designation is the unit label with the suffix A. Polygons representing unique properties other than the default can be identified with suffixes B, C...etc. All polygons in the Butler Peak quadrangle are designated by the suffix A.
BTLRPK_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 BTLRPK_GEO # 4 5 B - 29 BTLRPK_GEO -ID 4 5 B - 33 L-SYMB 3 3 I - 36 L-TAG 25 25 C -L-SYMB stores appropriate line symbol value from the lineset geoscamp2.lin (included in the data package)
BTLRPK_PTS.PAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 BTLRPK_PTS# 4 5 B - 21 BTLRPK_PTS-ID 4 5 B - 25 P-DIP 3 3 I - 28 P-STRIKE 3 3 I - 31 P-SYMB 3 3 I - 34 P-TAG 25 25 C - 59 P-UNIQUE 200 200 C - 259 P-AGECON 50 50 C - 309 P-SOURCE 200 200 C - 509 P-AGE 100 100 C - 609 P-PLUNGE 3 3 I - 612 P-DIPDIR 3 3 I -P-DIP the dip of planar features
BTLRPK_LDR.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 BTLRPK_LDR# 4 5 B - 29 BTLRPK_LDR-ID 4 5 B - 33 L-SYMB 3 3 I -
In our mapping in the Butler Peak quadrangle, we were guided in part by the findings of R.S. MacColl 1:36,000-scale mapping of the Rattlesnake Mountain pluton.
Technical review by David M. Miller led to significant improvements in aspects of the data base, the plot file, and in the discription of the geologic units of the Butler Peak 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 and (2) the U.S. Forest Service (San Bernardino National Forest). In our digital preparation of the data set, carried out in the Geographic Information System laboratory of the Mineral Resources Survey Program of the U.S. Geological Survey in Spokane, Washington, we received valuable assistance from Paul C. Hyndman and from Rachel Hauser at the SCAMP Geographic Information System laboratory in Riverside, California.
Dibblee, T.W., Jr., 1964, Geologic map of the Lucerne Valley quadrangle, San Bernardino County, California: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-426, scale 1:62,500.
MacColl, R.S., 1964, Geochemical and structural studies in batholithic rocks of southern California: Part 1, Structural geology of Rattlesnake Mountain pluton: Geological Society of America Bulletin, v. 75, p. 805-822
The data set for the Butler Peak quadrangle has been prepared by the Southern California Areal Mapping Project (SCAMP), a cooperative project sponsored jointly by the U.S. Geological Survey and the California Division of Mines and Geology, as part of an ongoing effort to utilize a Geographical Information System (GIS) format to create a regional digital geologic database for southern California. This regional database is being developed as a contribution to the National Geologic Map Data Base of the National Cooperative Geologic Mapping Program of the USGS. Development of the dataset for the Butler Peak quadrangle has also been supported by the U.S. Forest Service, San Bernardino National Forest.
The digital geologic map database for the Butler Peak 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, the U.S. Forest Service, San Bernardino National Forest, is using the database as part of a study of an endangered plant species that shows preference for particular rock type environments. The Butler Peak database is not suitable for site-specific geologic evaluations at scales greater than 1:24,000 (1 in = 2,000 ft).
Scale (X,Y) = (609.489,609.966) Skew (degrees) = (0.003) Rotation (degrees) = (-0.025) Translation = (-6246.250,-537.794) RMS Error (input,output) = (0.001,0.850) Affine X = Ax + By + C Scale (X,Y) = (609.489,609.966) Skew (degrees) = (0.003) Rotation (degrees) = (-0.025) Translation = (-6246.250,-537.794) RMS Error (input,output) = (0.001,0.850) Affine X = Ax + By + C Y = Dx + Ey + F A = 609.489 B = 0.300 C = -6246.250 D = -0.266 E = 609.966 F = -537.794
Are there legal restrictions on access or use of the data?
Use_Constraints:The Butler Peak 7.5' geologic-map database should be used to evaluate and understand the geologic character of the Butler Peak 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. However, it is not sufficiently detailed for site-specific determinations or evaluations of those 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 Butler Peak 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 any derivative maps, the detail and accuracy issues inherent in map scale limitations are also present in the digital data. The fact that this database was edited at a scale of 1:24,000 means that higher-resolution data generally are not present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater, real detail, although it may reveal fine-scale irregularities beyond the intended resolution of the database. Similarly, although higher-resolution data is incorporated at a few places, the resolution of the combined output will be limited by the lower-resolution data.
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
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.
This digital, geologic map database of the Butler Peak 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).
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