Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Mitchell W. Reynolds
Publication_Date: 2003
Title:
Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana
Edition: Version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Geologic Investigations Series
Issue_Identification: I-2773
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/imap/i-2773/
Description:
Abstract:
The geologic map of the Hogback Mountain quadrangle, scale 1:24,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of an area in the geologically complex southern part of the Montana disturbed belt. In the Hogback Mountain area, rocks ranging in age from Middle Proterozoic through Cretaceous are strongly folded within and under thrust plates of equivalent rocks. Continental rocks of successive thrust plates have been telescoped eastward over a buttress of the stable continent. Erosional remnants of Oligocene andesitic basalt lie on highest surfaces eroded across the strongly deformed older rocks; younger erosion has dissected the terrain deeply, producing Late Tertiary and Quaternary deposits of alluvium, colluvium, and local landslide debris in the valleys and canyons.
Different stratigraphic successions are exposed at different structural levels across the quadrangle. In the northeastern part of the quadrangle at the lowest structural level, rocks of the Upper Mississippian Big Snowy Group, including the Kibbey Formation and the undivided Otter and Heath Formations, the overlying Pennsylvanian Amsden and undivided Quadrant and Phosphoria Formations, the Ellis Group, and the Kootenai Formation, are folded and broken by thrust faults. The next higher structural level, the Avalanche Butte thrust plate, exposes strongly folded and, in places, attenuated strata of Cambrian (Flathead Sandstone, Wolsey Shale, Meagher Limestone, and undivided Pilgrim Formation and Park Shale), Devonian (Maywood Formation, Jefferson Formation, and most of the Three Forks Formation), and Mississippian (uppermost part of the Three Forks Formation and Lodgepole and Mission Canyon Limestones) ages. The overlying Hogback Mountain thrust plate contains strongly folded rocks ranging in age from the Middle Proterozoic Greyson Formation to the Upper and Lower Mississippian Mission Canyon Limestone and Cretaceous diorite sills. The highest structural level, the Moors Mountain thrust plate, contains the Middle Proterozoic Greyson and Newland Formations and discontinuous Upper Proterozoic diabase sills.
Rocks are complexly folded and faulted across the quadrangle. At the lowest level in the northeastern part of the quadrangle, Upper Mississippian and younger strata are folded along northwest-trending axes and broken by thrust faults that at outcrop level displace the same rocks. The central core of the quadrangle is formed by the Avalanche Butte thrust plate, which contains recumbently folded and thrust faulted Paleozoic rocks. A succession of four tight recumbent folds within the plate have axial traces that trend northwest and north-northwest, and that are both arched and downfolded along east- and northeast-trending axes. Carbonate rocks of the Mission Canyon and Lodgepole Limestones in the upper part of the Avalanche Butte thrust plate exposed in the canyon of Trout Creek are folded and attenuated in stacked east-directed recumbent folds that developed as a succession of folded duplex thrust slices. The exposed remnant of the next higher structural level, the Hogback Mountain thrust plate, contains northeast- and east-trending folds that are inverted on the upper overturned limb of a younger northwest-trending recumbent fold. The Hogback Mountain thrust fault is itself folded and, in its northernmost exposures, is overturned to dip west beneath the overlying Moors Mountain thrust plate. During post-middle Tertiary deformation, the Hogback Mountain thrust fault moved as a normal fault, down on the east. The structurally highest Moors Mountain thrust plate rests on the Avalanche Butte thrust plate in the southwestern part of the quadrangle and across both the Avalanche Butte and Hogback Mountain thrust plates along the northwest edge of the quadrangle. In the central eastern part of the map area, the edge of a large klippen of the Moors Mountain thrust plate rests on a major inverted syncline of the underlying Hogback Mountain thrust plate. At the base of both the contiguous thrust plate and its klippen, the bounding Moors Mountain thrust fault ramps steeply upward from south to north across a structural culmination in underlying thrust plates.
In the southwest corner of the quadrangle, strata of the Greyson Formation are faulted down on the west along a normal fault that, in the Nelson quadrangle adjacent on the west, is listric down to the west with the Moors Mountain thrust fault. Movement on the normal fault is younger than middle Oligocene.
Purpose:
The geologic map of the Hogback Mountain quadrangle provides new geologic information for public use and for use by governmental agencies for land-use planning, including assessment of natural resources, natural hazards, and recreational potential, and for land-use management. The map provides an interpretation of the complex geology and terrain to recreationalists using the Gates of the Mountains Wilderness. The map provides data for scientific interpretation of the geology of part of the south end of the Montana disturbed belt.
Supplemental_Information:
Map political location: Lewis and Clark and Meagher Counties, Montana
Map scale: 1:24,000
Geology mapped in 1976 and 1977
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata file may include some ARC/INFO-specific terminology.
GEOSPATIAL FILES INCLUDED IN THIS DATA SET:
hogpoly: polygon coverage containing geologic unit contacts, faults, dikes, and labels
hogline: arc coverage containing cross sections, anticlines, synclines
hogpoint: point coverage containing strike and dip attitudes of bedding and foliation, and other point-data map entities
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -111.750
East_Bounding_Coordinate: -111.625
North_Bounding_Coordinate: 46.875
South_Bounding_Coordinate: 46.750

Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geologic maps
Theme_Keyword: geologic structure
Theme_Keyword: bedrock geologic units
Theme_Keyword: faulting (geologic)
Theme_Keyword: folding (geologic)
Theme_Keyword: tectonic processes

Theme:
Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology
Theme_Keyword: Montana disturbed belt
Theme_Keyword: Lewis and Clark line
Theme_Keyword: thrust fault
Theme_Keyword: thrust plate
Theme_Keyword: recumbent fold
Theme_Keyword: klippen
Theme_Keyword: strike-slip fault
Theme_Keyword: inverted fold
Theme_Keyword: detachment zone
Theme_Keyword: Moors Mountain thrust fault
Theme_Keyword: Moors Mountain thrust plate
Theme_Keyword: Hogback Mountain thrust fault
Theme_Keyword: Hogback Mountain thrust plate
Theme_Keyword: Avalanche Butte thrust plate

Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus:
U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS)
Place_Keyword: USA
Place_Keyword: Montana
Place_Keyword: Lewis and Clark County
Place_Keyword: Meagher County
Place_Keyword: Big Belt Mountains
Place_Keyword: Gates of the Mountains Wilderness
Place_Keyword: Hogback Mountain
Place_Keyword: Middleman Mountain
Place_Keyword: Beaver Creek Big Belt Mountains
Place_Keyword: Trout Creek Big Belt Mountains
Place_Keyword: Getty Oil Company No. 3-10 Federal Hogback Mountain drill hole

Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f30049 = Lewis and Clark
Place_Keyword: f30059 = Meagher
Access_Constraints: none

Use_Constraints:
None. However, citation of publication reference and acknowledgment of the U.S. Geological Survey would be appreciated in all products that use or are derived from these data. These data should not be used at scales larger than 1:24,000.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mitchell W. Reynolds
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 25046 Federal Center, MS 913
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 303-236-8007
Contact_Facsimile_Telephone: 303-236-5349
Contact_Electronic_Mail_Address: mwreynol@usgs.gov

Data_Set_Credit:
Radiometric dating of samples from adjacent areas applicable to this quadrangle was performed by Harald H. Mehnert, U.S. Geological Survey. Technical reviews by Karl K. Kellogg and David A. Lindsey, U.S. Geological Survey, helped improve the quality of the geologic map, illustrations, and text. Sharon A. Smith graciously and painstakingly translated the map data into digital files. Carlos Vulgamott made preliminary digital copy of the map and cross sections.

Native_Data_Set_Environment: SunOS, 5.7, sun4d UNIX ARC/INFO version 8.0.2

Browse_Graphic:
Browse_Graphic_File_Name: http://pubs.usgs.gov/imap/i-2773/i-2773.gif
Browse_Graphic_File_Description: Reduced-size image of the map sheet, 250x210 pixels, 25k bytes.
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name: http://pubs.usgs.gov/imap/i-2773/i-2773.pdf
Browse_Graphic_File_Description: Printable representation of map layout, 2.7 MB.
Browse_Graphic_File_Type: PDF

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Geologic data were entered in the field directly on the Hogback Mountain topographic base map at a scale of 1:24,000. Location of control and data points was made by instrument resection and by inspection where topographic contours were distinct. Elevations were checked in the field using an altimeter calibrated at base stations and at surveyed elevations from the topographic base map. Data were transferred from field sheets to a scale-stable mylar base map, and separate scale-stable registered overlays were constructed for polygons, lines, symbols, and tags. Color check test plots were compared carefully to the original geologic map, and corrections were made as needed. The map has been thoroughly reviewed for conformity with U.S. Geological Survey stratigraphic nomenclature and editorial standards.
Logical_Consistency_Report:
Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the author and by the GIS technicians who created/edited the digital database. Automated (ARC/INFO) routines were also used to check the databases for polygon label errors, line or point attribution errors, sliver polygons, dangling arcs, intersection errors, and projection information. Check plots of the map were reviewed by at least two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards.
Completeness_Report:
No features that could be accurately represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is about 113 square meters. All geospatial database elements are attributed.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Lines and data points were located in the field by instrument resection and by inspection from the topographic base map where topographic contours are distinct. Elevations were checked in the field using an altimeter calibrated at base stations and at surveyed elevations from the topographic base map. Thus line and points on original field maps generally were located with a vertical position accuracy of less than one contour interval and a horizontal position accuracy of about 15 m. Lines and points were digitized from the scale-stable geologic base map using a digitizer tablet with a resolution of 0.001 inch. Information is added in accordance to U.S. National Map Accuracy Standards, Revised June 17, 1947. 95 percent of points plotted on mylar matched the source map within 1/50 inch.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Billingsley, P.R.
Originator: Locke, Augustus
Title: Structure of ore deposits in the continental framework
Publication_Date: 1939
Publication_Information:
Publication_Place: New York
Publisher: American Institute of Mining and Metallurgical Engineers
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1939
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Billingsley and Locke (1939)
Source_Contribution: preliminary geologic information
Source_Information:
Source_Citation:
Citation_Information:
Originator: Folk, R.L.
Title: Spectral subdivision of limestone types
Publication_Date: 1962
Series_Information:
Series_Name: American Association of Petroleum Geologists Memoir
Issue_Identification: 1
Publication_Information:
Publication_Place: Tulsa, Oklahoma
Publisher: American Association of Petroleum Geologists
Other_Citation_Details: p. 62-84
Larger_Work_Citation:
Citation_Information:
Originator: Ham, W. E., (ed.)
Title: Classification of carbonate rocks--A symposium
Publication_Date: 1962
Series_Information:
Series_Name: American Association of Petroleum Geologists Memoir
Issue_Identification: 1
Publication_Information:
Publication_Place: Tulsa, Oklahoma
Publisher: American Association of Petroleum Geologists
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1962
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Folk (1962)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Harrison, J.E.
Originator: Reynolds, M.W.
Title:
Western U.S. continental margin--A stable platform dominated by vertical tectonics in the late Precambrian
Publication_Date: 1976
Series_Information:
Series_Name: Geological Society of America Abstracts with Programs
Issue_Identification: 8 (6)
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher: Geological Society of America
Other_Citation_Details: p. 905
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1976
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Harrison and Reynolds (1976)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Hobbs, S.W.
Originator: Griggs, A.B.
Originator: Wallace, R.E.
Originator: Campbell, A.B.
Title: Geology of the Coeur d'Alene District, Shoshone County, Idaho
Publication_Date: 1965
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 478
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1965
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Hobbs and others (1965)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Reynolds, M.W.
Title:
Character and significance of deformation at the east end of the Lewis and Clark line, Montana
Publication_Date: 1977
Series_Information:
Series_Name: Geological Society of America Abstracts with Programs
Issue_Identification: 9 (6)
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher: Geological Society of America
Other_Citation_Details: pp. 758-759
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1977
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Reynolds (1977)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Reynolds, M.W.
Title:
Character and extent of basin-range faulting, western Montana and east-central Idaho
Publication_Date: 1979
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: Rocky Mountain Association of Geologists
Other_Citation_Details: p. 185-193
Larger_Work_Citation:
Citation_Information:
Originator: Newman, G.W. (ed.)
Originator: Goode, H.D. (ed.)
Publication_Date: 1979
Title: RMAG and UGA 1979 Basin and Range Symposium
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: Rocky Mountain Association of Geologists
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1979
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Reynolds (1979)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Reynolds, M.W.
Originator: Close, T.J.
Title: Gates of the Mountains Wilderness and additions, Montana
Publication_Date: 1984
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 1300, v. 2
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Other_Citation_Details: p. 705-708
Larger_Work_Citation:
Citation_Information:
Originator: Marsh, S.P. (ed.)
Originator: Kropschot, S.J. (ed.)
Originator: Dickinson, R.G. (ed.)
Title: Wilderness Mineral Potential
Publication_Date: 1984
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 1300, v. 2
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1984
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Reynolds and Close(1984)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Reynolds, M.W.
Originator: Hays, W.H.
Title:
Geologic map of the Nelson quadrangle, Lewis and Clark County, Montana
Publication_Date: 2003
Series_Information:
Series_Name: U.S. Geological Survey Geologic Investigations Series
Issue_Identification: I-2774
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Source_Scale_Denominator: 24000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Reynolds and Hays(2003)
Source_Contribution: preliminary geologic information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Reynolds, M.W.
Originator: Kleinkopf, M.D.
Title:
The Lewis and Clark line, Montana-Idaho--A major intraplate tectonic boundary
Publication_Date: 1977
Series_Information:
Series_Name: Geological Society of America Abstracts with Programs
Issue_Identification: 9 (7)
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher: Geological Society of America
Other_Citation_Details: p. 1140-1141
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1977
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Reynolds and Kleinkopf(1977)
Source_Contribution: preliminary geologic information

Process_Step:
Process_Description:
Polygons, lines, and points representing geologic features and data points were digitized from scale-stable compilation materials using ARC/INFO software.
Process_Date: 2001

Process_Step:
Process_Description:
Draft check plots of the geologic map and explanation were created and submitted for peer review. Geologists reviewed the plots for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Revisions were made to geospatial database as needed.
Process_Date: 2001

Process_Step:
Process_Description:
First draft of metadata created by Sharon Smith using FGDCMETA.AML ver. 1.32 01/11/99
Process_Date: 2001

Process_Step:
Process_Description:
Geospatial database files and metadata were quality checked for completeness and consistency.
Process_Date: 2001

Process_Step:
Process_Description:
Database files, metadata, and check plots were edited by the USGS Central Publications Group, and revisions made to the geospatial database as needed.
Process_Date: 2001

Process_Step:
Process_Description:
Final preparation of the geospatial database for distribution, and preparation of map information for publication.
Process_Date: 2001-2002

Process_Step:
Process_Description: Creation of original metadata record
Process_Date: 20021203
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Theodore R. Brandt, Sharon Smith
Contact_Address:
Address_Type: mailing
Address: Box 25046, Federal Center, MS-913
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 303-236-1901, 303-236-4610
Contact_Electronic_Mail_Address: tbrandt@usgs.gov, ssmith@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Polyconic
Polyconic:
Longitude_of_Central_Meridian: -111.625
Latitude_of_Projection_Origin: 46.75
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 10
Ordinate_Resolution: 10
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
---------------------------------------------------------------
COVERAGE NAME: hogpoly.pat
---------------------------------------------------------------
COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
1    AREA                8      18     F      5                        -
9    PERIMETER           8      18     F      5                        -
17   HOGBACKPOLY#        4       5     B      -                        -
21   HOGBACKPOLY-ID      4       5     B      -                        -
25   LABEL              10      10     C      -                        -
35   SHADESYM            4       4     I      -                        -
39   DESCRIPTION       100     100     C      -   DESC                 -
139  PATTERN            10      10     I      -                        -
------------------------------------
USER-DEFINED ITEMS IN HOGPOLY.PAT:
------------------------------------
ITEM NAME: LABEL
DATABASE ITEM STRUCTURE: 10,10,C,0
DESCRIPTION  text description of feature type
ITEM VALUES FOR 'LABEL':
Cf
Cm
Cpp
Cw
DCu
Dj
Dm
Jme
Khd
Kk
MDt
Mbk
Mbu
Ml
Mm
OGb
PPpq
Pa
QTg
Qa
Ql
Qog
Yg
Yn
ITEM NAME: SHADESYM
DATABASE ITEM STRUCTURE: 4,4,I,0
DESCRIPTION  shade symbol value from shadeset color524.shd to fill polygons
ITEM VALUES FOR 'SHADESYM':
0
4
30
52
55
60
71
100
102
143
164
233
261
263
264
274
300
304
346
410
453
511
530
533
611
ITEM NAME: DESCRIPTION
DATABASE ITEM STRUCTURE: 100,100,C,0
DESCRIPTION  text description of feature type
ITEM VALUES FOR 'DESCRIPTION':
Flathead Sandstone (Middle Cambrian)
Meagher Limestone (Middle Cambrian)
Pilgrim Formation and Park Shale, undivided (Upper and Middle Cambrian)
Wolsey Shale (Middle Cambrian)
Devonian and Cambrian rocks undivided
Jefferson Formation (Upper Devonian)
Maywood Formation (Upper and Middle Upper Devonian)
Morrison Formation and Ellis Group undivided (Jurassic)
Hornblende diorite (Upper Cretaceous)
Kootenai Formation (Lower Cretaceous)
Big Snowy Group, Kibbey Formation (Upper Mississippian)
Big Snowy Group, Health and Otter Formations, undivided (Upper Mississippian)
Three Forks Formation (Lower Mississippian and Upper Devonian)
Lodgepole Limestone (Lower Mississippian)
Mission Canyon Limestone (Upper and Lower Mississippian)
Basalt (Oligocene)
Amsden Formation  (Pennsylvanian)
Phosphoria and Quadrant Formations, undivided (Permian and Pennsylvanian)
Alluvium (Holocene)
Landslide deposits (Holocene and Pleistocene)
Old gravel (Holocene and Pleistocene)
Older gravel (Pleistocene and Pliocene)
Greyson Formation (Belt Supergroup, Middle Proterozoic)
Newland Formation (Belt Supergroup, Middle Proterozoic)
Diorite sills (Upper Proterozoic)
ITEM NAME: PATTERN
DATABASE ITEM STRUCTURE: 10,10,I,0
DESCRIPTION  Indicates cross hatch sections
ITEM VALUES FOR 'PATTERN':
0
101
*******************************************************************************
---------------------------------------------------------------
COVERAGE NAME: hogpoly.aat
---------------------------------------------------------------
COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
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  HOGBACKPOLY#         4       5     B      -                        -
29  HOGBACKPOLY-ID       4       5     B      -                        -
33  LINECODE             4       4     I      -                        -
37  DESCRIPTION         80      80     C      -    DESC                -
------------------------------------
USER-DEFINED ITEMS IN HOGPOLY.AAT:
------------------------------------
ITEM NAME: LINECODE
DATABASE ITEM STRUCTURE: 4,4,I,0
DESCRIPTION  set lineset values for line coding
ITEM VALUES FOR 'LINECODE':
1
2
3
4
15
20
22
24
26
35
51
176
183
184
216
217
218
220
221
222
223
227
321
328
330
ITEM NAME: DESCRIPTION
DATABASE ITEM STRUCTURE: 80,80,C,0
DESCRIPTION  text description of linear feature type
ITEM VALUES FOR 'DESCRIPTION':
contact - approximately located
contact - certain
contact - concealed
contact - inferred
dike - OGb
dike Khd - approximately located
dike Khd - certain
dike Zd - approximately located
dike Zd - certain
fault - approximately located
fault - certain
fault - inferred
fault displacement unknown - concealed
neatline
normal fault - concealed
normal fault - inferred
overturn thrust fault - approximately located
overturn thrust fault - certain
thrust fault - approximate location queried
thrust fault - approximately located
thrust fault - certain
thrust fault - concealed
thrust fault - inferred
thrust fault - inferred, queried
******************************************************************************
---------------------------------------------------------------
COVERAGE NAME: hogline
---------------------------------------------------------------
COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
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   HOGBACKLINE#        4       5     B      -                        -
29   HOGBACKLINE-ID      4       5     B      -                        -
33   LINECODE            3       3     I      -                        -
36   DESCRIPTION        80      80     C      -    DESC                -
116  LINESET            30      30     C      -                        -
------------------------------------
USER-DEFINED ITEMS IN HOGLINE.AAT:
------------------------------------
ITEM NAME: LINECODE
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION  set lineset values for line coding in hogline
ITEM VALUES FOR 'LINECODE':
1
60
61
62
80
81
92
93
94
112
113
114
121
332
ITEM NAME: DESCRIPTION
DATABASE ITEM STRUCTURE: 80,80,C,0
DESCRIPTION  text description of linear feature type
ITEM VALUES FOR 'DESCRIPTION':
anticline - approximately located
anticline - certain
anticline - inferred
inverted anticline - approximately located
inverted syncline - approximately located
line of cross-section A
line of cross-section B
line of cross-section C
line of cross-section D
overturned anticline - approximately located
overturned anticline - certain
overturned syncline, approximately located
overturned syncline, certain
overturned syncline, concealed
overturned syncline, inferred
syncline - Approximately located
syncline - certain
syncline - concealed
syncline - inferred
ITEM NAME: LINESET
DATABASE ITEM STRUCTURE: 30,30,C,0
DESCRIPTION  identifies linesets used for linear symbolset
ITEM VALUES FOR 'LINESET':
geol_sfo.lin
plotter
********************************************************************************
---------------------------------------------------------------
COVERAGE NAME: hogpoint
---------------------------------------------------------------
COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
1    AREA                8      18     F      5                        -
9    PERIMETER           8      18     F      5                        -
17   HOGBACKPT#          4       5     B      -                        -
21   HOGBACKPT-ID        4       5     B      -                        -
25   SYMBOL              3       3     I      -                        -
28   ROTATION            3       3     I      -    AZIMUTH             -
31   INCLINATION         3       3     I      -    DIP                 -
34   DESCRIPTION        80      80     C      -    DESC                -
118  SYMSET             10      10     C      -                        -
------------------------------------
USER-DEFINED ITEMS IN HOGPOINT.PAT:
------------------------------------
ITEM NAME: SYMBOL
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION  value used to identify symbol from markerset
ITEM VALUES FOR 'SYMBOL':
1
2
3
6
7
15
101
109
114
133
742
743
746
747
ITEM NAME: ROTATION
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION  compass orientation of feature, in degrees
ITEM VALUES FOR 'ROTATION':
0
4
7
13
20
30
35
37
57
58
60
65
67
70
73
80
82
83
85
88
90
92
94
95
98
100
102
103
105
107
108
110
112
113
114
115
116
117
118
120
125
127
128
130
132
133
135
137
140
142
143
145
147
148
150
153
155
157
160
162
163
165
166
168
170
173
175
177
180
185
195
205
210
213
215
220
225
230
235
236
240
247
248
255
257
258
260
262
270
273
274
275
279
283
287
290
293
294
297
300
303
305
310
312
313
315
318
327
330
335
338
342
345
348
350
ITEM NAME: INCLINATION
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION  inclination from horizontal of feature, in degrees
ITEM VALUES FOR 'INCLINATION':
0
5
7
8
10
12
13
15
17
18
20
22
23
24
25
26
27
28
30
31
32
33
34
35
36
37
38
40
42
43
45
46
47
48
50
52
53
55
57
60
64
65
66
67
68
70
74
75
76
77
80
83
85
90
ITEM NAME: DESCRIPTION
DATABASE ITEM STRUCTURE: 80,80,C,0
DESCRIPTION  text description of each symbol
ITEM VALUES FOR 'DESCRIPTION':
Dip of fault surface
Dry oil well
bedding overturned > 180 degrees - strike and dip
Zd outcrop too small to show at map scale
horizontal bedding
inclined bedding - strike and dip
inclined cleavage - strike and dip
overturned bedding - strike and dip
prospect
quartz vein
spring
vertical bedding
ITEM NAME: SYMSET
DATABASE ITEM STRUCTURE: 10,10,C,0
DESCRIPTION  defines markersets used
ITEM VALUES FOR 'SYMSET':
GEOSCAMP2
MUNICIPAL
OILGAS
USGS
Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/imap/i-2773/i-2773_508.pdf
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: Central Publications Group
Address: P.O. Box 25046, Federal Center, MS-902
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 1-888-ASK-USGS
Resource_Description: USGS Geologic Investigations Series Map I-2773
Distribution_Liability:
Although these data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the U.S. Geological Survey nor the Unites States Government may be held liable for any damages resulting from their authorized or unauthorized use.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Version_Number: 8.0.2
Format_Information_Content: Geologic units and structural features
File_Decompression_Technique: gzip -d and tar or unzip
Transfer_Size: 2
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: 1.0
Format_Information_Content: Geologic units and structural features
File_Decompression_Technique: gzip -d and tar or unzip
Transfer_Size: 2
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20160613
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area
Contact_Position:
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

This page is <https://geo-nsdi.er.usgs.gov/metadata/map-i/2773/metadata.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:04:56 2018