Identification_Information:
Citation:
Citation_Information:
Originator: Schruben, Paul G.
Originator: Arndt, Raymond E.
Originator: Bawiec, Walter J.
Publication_Date: 1994
Title:
Geologic Units of the Conterminous United States at 1:2,500,000 Scale -- A Digital Representation of the 1974 P.B. King and H.M.
Beikman Map
Geospatial_Data_Presentation_Form: Map
Series_Information:
Series_Name: U.S. Geological Survey Digital Data Series
Issue_Identification: DDS-11
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage:
Description:
Abstract:
This CD-ROM contains a digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King
and Beikman, 1974b). It excludes Alaska and Hawaii. In addition to the graphical formats, the map key is included in ASCII text.
A geographic information system (GIS) allows combining and overlaying of layers for analysis of spatial relations not readily apparent in
the standard paper publication. This disc contains only geology. However, digital data on geology, geophysics, and geochemistry can be
combined to create useful derivative products-- for example, see Phillips and others (1993).
This CD-ROM contains a copy of the text and figures from Professional Paper 901 by King and Beikman (1974a). This text describes the
historical background of the map, details of the compilation process, and limitations to interpretation. The digital version of the text can be
searched for keywords or phrases.
Purpose:
Conversion of the geologic map of the U.S. to a digital format was undertaken to facilitate the presentation and analysis of earth-science
data. Digital maps can be displayed at any scale or projection, whereas a paper map has a fixed scale and projection. However, the geology
on this disc is not intended to be used at any scale finer than 1:2,500,000.
Supplemental_Information:
For DOS users, the CD-ROM contains menu-driven analytical software, in which the user selects from an array of topics. The CD-ROM
also contains MAPPER display software, a user-friendly package that displays the interactive vector map. The raster image of the geologic
map can be displayed with VIEWLBL.
For other types of computer users, the map must be converted from one of the following formats included on the CD-ROM:
ARC/INFO 6.1.1 Export Digital Line Graph (DLG) Optional Drawing Exchange File (DXF) Map Overlay Statistical System (MOSS)
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1974
Single_Date/Time:
Calendar_Date: 1994
Currentness_Reference: Publication date of the original work (1974) and the CD-ROM (1994)
Status:
Progress: complete
Maintenance_and_Update_Frequency: not planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -162.0
East_Bounding_Coordinate: -66.0
North_Bounding_Coordinate: 60.0
South_Bounding_Coordinate: 24.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Geology
Theme_Keyword: Bedrock
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Conterminous United States
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schruben, Paul G.
Contact_Organization: Minerals Information Office
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 920, National Center
U.S. Geological Survey
12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 22092
Contact_Voice_Telephone: (703) 648-6142
Contact_Facsimile_Telephone: (703) 648-6057
Contact_Electronic_Mail_Address: pschruben@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description: Bedrock geologic map units of the conterminous United States
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment: Data General AViiON 6220 computer system running the DG/UX version of UNIX.
Cross_Reference:
Citation_Information:
Originator: King, Philip B.
Originator: Beikman, Helen M.
Publication_Date: 1974
Title: Explanatory text to accompany the geologic map of the United States
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 901
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The linework was captured by hand digitizing as well as scanning from the paper map and negatives. The digital map was assembled and
edited in ARC/INFO on a State-by-State basis, which caused some edge-matching problems. The final mosaic was adjusted several times
to correct for registration problems. The coastline was taken from the 1:2,000,000 scale Digital Line Graph data (U.S. Geological Survey,
1987), generalized to 1 km.
Construction of a geologic map of an area as large and complex as the conterminous United States requires a great deal of generalization:
geologic units shown on larger scale maps are combined into broader map units and their contacts are simplified to produce a pattern that is
legible at the scale of publication. The process of generalization used in the compilation of the Geologic Map of the United States is
described in King and Beikman (1974a, p. 20).
Furthermore, the Geologic Map of the United States is primarily a bedrock map, which depicts geologic materials present beneath the soil
or relatively thin mantles of surficial deposits, not necessarily the surficial materials themselves. For example, the map does not depict the
glacial deposits in the northern States, the widespread eolian deposits in the High Plains, and the high-level gravels that mantle older
Tertiary and pre-Tertiary units in much of the Atlantic and Gulf Coastal Plains.
Logical_Consistency_Report:
The coverages on this disc for the digital geologic map of the conterminous United States differ in several ways from the published map. The
county outlines, cities, drainage, and other base-map information are not present on the digital version except as overlays in MAPPER. Only the
larger water bodies are included.
The larger geology polygons are split into several smaller polygons to avoid problems with color and pattern fill on screen plots and paper
plotters. The maximum polygon size is 1476 vertices, which is PostScript compatible.
The rock-unit names are stored in uppercase letters as well as the published mixed case. For instance:
TMC Tmc
TMOE Tmoe
UTA uTa
The uppercase names are used in the coverage because an INFO sort in ARC/INFO is case sensitive. The lookup tables must be sorted to work
correctly. The mixed-case rock-unit names are in the kbcolor.lut lookup table. Longer rock-unit descriptions such as:
Cretaceous granitic rocks
Washita Group
are in the ROCKDESC column of the .pat file of the KBLEG coverage. Some of the unit names have been modified to avoid ambiguity.
The Pennsylvanian symbol is stored as PP in:
PP
PP1
PP1a
PP2
PP3
PP4
The Triassic symbol is stored as Tr in:
JTr
Tr
TrPe
Trv
Tri
Trg
The Cambrian symbol is stored as C in:
C
Cq
OC
Ce
Cv
Cg
m1 is replaced with mm1 to avoid confusion with M1
m2 is replaced with mm2 to avoid confusion with M2
m3 is replaced with mm3 to avoid confusion with M3
m4 is replaced with mm4 for consistency
The extent of glaciation appears in the legend but is not present in the coverage.
Completeness_Report:
The map does not include coverage of Alaska, Hawaii, or territories.
The Geologic Map of the United States is primarily a bedrock map, which depicts geologic materials present beneath the soil or relatively thin
mantles of surficial deposits, not necessarily the surficial materials themselves. For example, the map does not depict the glacial deposits in the
northern States, the widespread eolian deposits in the High Plains, and the high-level gravels that mantle older Tertiary and pre-Tertiary units in
much of the Atlantic and Gulf Coastal Plains.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The users of the geologic map on this disc should respect the intentions of the compilers of the map and some of its limitations. The
Geologic Map of the United States (King and Beikman, 1974b) is intended to be used at a scale of 1:2,500,000; it is not intended to be
used at a more detailed scale. For instance, Colorado is about 10 inches wide at the published scale of the King and Beikman map.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Philip B. King
Originator: Helen M. Beikman
Publication_Date: 1974
Title: Explanatory text to accompany the geologic map of the United States
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 901
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details: Library of Congress catalog - card No. 74-600169
Source_Scale_Denominator: 2500000
Type_of_Source_Media: Paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: King and Beikman (1974)
Source_Contribution: Data presented on USGS DDS-11 were produced by scanning this printed map.
Process_Step:
Process_Description:
The linework was captured by hand digitizing as well as scanning from the paper map and negatives. The digital map was assembled
and edited in ARC/INFO on a State-by-State basis, which caused some edge-matching problems. The final mosaic was adjusted
several times to correct for registration problems. The coastline was taken from the 1:2,000,000 scale Digital Line Graph data (U.S.
Geological Survey, 1987), generalized to 1 km.
The ARC/INFO version of the Geologic Map of the United States consists of three coverages:
1) geology - 12,800 polygons 2) faults - 3 fault types and hidden contacts 3) legend - 164 rock units
The fault coverage has four line types:
1) faults 2) dashed faults 3) dotted faults 4) hidden contacts
The DESC field descriptors are FAULT, DASH, DOT, CONTAC, respectively.
Source_Used_Citation_Abbreviation: King and Beikman (1974)
Process_Date: 1993
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\Projects\Gulf\work\spatial\doc\usgeolmeta.xml
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation: C:\Projects\Gulf\work\spatial\shape\geolusg
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 21465
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 29972
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 12860
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 29.50
Standard_Parallel: 45.50
Longitude_of_Central_Meridian: -96.0
Latitude_of_Projection_Origin: 23.0
False_Easting: 0.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1000
Ordinate_Resolution: 1000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: NAD27
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378
Denominator_of_Flattening_Ratio: 295
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Geologic unit
Entity_Type_Definition:
Bedrock formations that are, wherever possible, time-stratigraphic--that is, units which are approximately the same geologic ages
at all places, such as systems, series, and stages.
Entity_Type_Definition_Source: U.S. Geological Survey Professional Paper 901
Detailed_Description:
Entity_Type:
Entity_Type_Label: Fault
Entity_Type_Definition:
Faults are shown not only to explain offsets of map units, but for their own sake, to express the structural grain of the area. The
density of faults represented on the geologic map thus equals that which would appear on a tectonic map of the country, but they are
marked simply as faults, not as low-angle or high- angle thrust faults, normal faults, or strike-slip faults; for this information the
user should consult the appro- priate tectonic map.
Entity_Type_Definition_Source: U.S. Geological Survey Professional Paper 901
Overview_Description:
Entity_and_Attribute_Overview:
Labels of the mapped units described by polygons in the data set are as follows:
C,cat,Ce,Cg,Cq,Cv,D,D1,D2,D2c,D3,D3c,De,dike,DS,DSe,DSv,Dv,J, Jc,Jg,Jmi,JTr,Kc,Ke,Kg,Kg1,Kg2,Kg3,Kgn,Ki,Kv,lK,lK1,lK2,lK3,
lMz,lMze,lMzv,lPz,lPze,lTa,lTf,lTv,M,M1,M2,M3,mm1,mm2,mm3,mm4,
Ms,O,O1,O1a,O1b,O2,O3,OC,Oe,Ov,P,P1,P1c,P2,P2a,P2ac,P2b,P3,P3a,
P3b,P4,Pe,PP,PP1,PP1a,PP2,PP3,PP4,Pza,Pzg1,Pzg2,Pzg3,Pzmi,Q, Qf,Qh,Qp,Qv,S,S1,S2,S3,Se,SOe,Sv,Ta,Te,Te1,Te2,Te3,Teb,Tec,Tee,
Tel,Ti,Tm,Tmc,Tmf,Tmoe,Tmv,To,Toc,Toee,Tp,Tpc,Tpf,Tpv,Tr,Trg,
Tri,TrPe,Trv,Tx,Txc,uK,uK1,uK2,uK3,uK3a,uK3b,uK4,uM,uMze,uPz,
uPzc,uPze,uTa,W,Wg,Wgn,Wmi,WTER,Wv,X,Xg,Xm,Xv,Y,Y1,Y2,Y3,Ya, Yg1,Yg2,Ygn,Ym,Ymi,Ys,Yv,Z,Zg,Zv
Each line object in the fault coverage has one of four attribute values:
1) faults (label FAULT) 2) dashed fault (label DASH) 3) dotted fault (label DOT) 4) hidden contact (label CONTAC)
Full details of the meanings of the attributes are given in USGS Professional Paper 901, whose text is provided with this data set.
Entity_and_Attribute_Detail_Citation:
U.S. Geological Survey Professional Paper 901 is included with this data set (when distributed in CD-ROM format) in ASCII, with
figures in TIFF.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey Information Services
Contact_Address:
Address_Type: mailing address
Address: Box 25286, Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225-0286
Contact_Voice_Telephone: 1-800-USA-MAPS
Contact_Facsimile_Telephone: 1-303-202-4693
Resource_Description: USGS DDS-11
Distribution_Liability:
This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the
United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report,
or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by
trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the
United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of
the United States Government or any agency thereof.
Although all data and software published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the U.S.
Geological Survey as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not
constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Graphical map depictions on this disc are intended to be used within the map scale limits applicable to the source data. Although software
enables the user to show images on the disc at various scales, the user is cautioned to refer to the source documentation for the appropriate map
scale limitations.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Information_Content: Geological bedrock units and faults, also state outlines including coastlines (from 1:2,000,000-scale DLG of USGS).
Transfer_Size: 17 Mb
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO-9660
Digital_Form:
Digital_Transfer_Information:
Format_Name: Digital Line Graph Optional format
Format_Version_Number: DLG-3
Format_Information_Content: Geological bedrock units and faults
Transfer_Size: 25 Mb
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO-9660
Digital_Form:
Digital_Transfer_Information:
Format_Name: Drawing Exchange File (DXF)
Format_Information_Content: Geological bedrock units and faults
Transfer_Size: 20 Mb
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO-9660
Digital_Form:
Digital_Transfer_Information:
Format_Name: Map Overlay Statistical System (MOSS)
Format_Information_Content: Geological bedrock units and faults
Transfer_Size: 17 Mb
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO-9660
Fees: $32.00
Technical_Prerequisites:
Geographic data included in DDS-11 are intended for use in a Geographic Information System (GIS).
This CD-ROM was produced in accordance with the ISO 9660 standard and thus allows access to the map data files and MAPPER by computers
with ISO 9660 software drivers.
In addition, the disc contains menu and display programs that operate on DOS-compatible computers with the following configuration:
IBM or compatible personal computer
640 kb RAM (at least 540 kb free memory)
Math coprocessor
MS- or PC-DOS version 5.0 or later
Microsoft MSCDEX version 2.1 or later
CD-ROM drive with ISO 9660 software driver
Hard disk drive (5 Mb free)
Super VGA graphics card (640x480 pixels with 256 colors)
VGA color monitor
Mouse
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Mineral Resource Surveys Program
Contact_Person: Paul G. Schruben
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 920, National Center
U.S. Geological Survey
12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192
Contact_Voice_Telephone: 703-648-6142
Contact_Facsimile_Telephone: 703-648-6057
Contact_Electronic_Mail_Address: pschruben@usgs.gov
Distribution_Liability:
This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the
United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report,
or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by
trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the
United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of
the United States Government or any agency thereof.
Although all data and software published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the U.S.
Geological Survey as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not
constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Graphical map depictions on this disc are intended to be used within the map scale limits applicable to the source data. Although software
enables the user to show images on the disc at various scales, the user is cautioned to refer to the source documentation for the appropriate map
scale limitations.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE in UNIX tar file
Format_Version_Number: 7.1.1
Format_Information_Content: Geology and fault coverages
File_Decompression_Technique: tar xvfo kbexport.tar
Transfer_Size: 35
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
Online_Computer_and_Operating_System: Data General AViiON running DG/UX 5.4R3.10
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC/INFO coverages in a UNIX tar file
Format_Version_Number: 7.1.1
Format_Information_Content: Bedrock map unit and fault coverages
File_Decompression_Technique: tar xvfo kb.tar
Transfer_Size: 24
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
Online_Computer_and_Operating_System: Data General AViiON running DG/UX 5.4R3.10
Fees: none
Metadata_Reference_Information:
Metadata_Date: 19970905
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N. Schweitzer
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 906 National Center
U.S. Geological Survey
12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: (703) 648-6533
Contact_Facsimile_Telephone: (703) 648-6647
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998