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USGS: Geochemical Databa…holith, Southwest Montana
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USGS Geochemical Database for Boulder Batholith, Southwest Montana.iso
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2009-06-22
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Identification_Information:
Citation:
Citation_Information:
Originator: Edward A. du Bray
Originator: Karen Lund
Originator: Robert I. Tilling
Originator: Paul D. Denning
Originator: Ed DeWitt
Publication_Date: 2009
Title: Geochemical database for the Boulder batholith and its satellitic
plutons, southwest Montana
Edition: Version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Data Series
Issue_Identification: 454
Publication_Information:
Publication_Place: Denver, Colorado, U.S.A.
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/ds/454
Description:
Abstract: Geochemical data presented in this report pertain to Cretaceous
igneous intrusions of the Boulder batholith and its satellitic plutons in
southwest Montana. The geographic area addressed in this compilation is
approximately bounded by latitudes 45.6 and 46.7 degrees North and
longitudes 112.75 and 111.5 degrees West. These data were compiled in
order to establish the geologic framework for world-class mineral deposits
of the Butte district. Although these deposits and their host rocks have
been the subject of many investigations, the petrologic characteristics of
associated intrusive rocks have not been systematically compiled,
synthesized, or interpreted. Abundant late Mesozoic intrusions in the
study area are probably byproducts of subduction-related processes,
including back-arc magmatism that prevailed along the west edge of the
North American plate during this interval. The ultimate goal of this
effort will be an evaluation of the time-space-compositional evolution of
Mesozoic magmatism associated with the Boulder batholith and
identification of genetic associations between magmatic and mineralizing
processes in this region.
Purpose: This product is a compilation of geochemical information for
intrusions of the Boulder batholith and is intended to aid in the study of
the geology and metallogenesis of the region.
Supplemental_Information:
Shape files included in this geospatial database:
Butte_Chem_Loc: point layer of geochemical data
geo_polys: polygon layer of geologic units
map_extent: line layer of map extent (neatline)
structure: line layer of geologic structures
Other files included in this geospatial database:
geojoin_mtbath.xls: An Excel spreadsheet containing all of the geologic
unit explanations and descriptions.
map_layout.mxd: The ArcGIS project file that accesses all of the data
layers used to display the map using ArcMap software.
drg_base: base map
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -112.780228
East_Bounding_Coordinate: -111.490425
North_Bounding_Coordinate: 46.707164
South_Bounding_Coordinate: 45.612552
Keywords:
Theme:
Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology
Theme_Keyword: Boulder batholith
Theme_Keyword: Geochemistry
Theme_Keyword: Modal composition
Theme_Keyword: Satellitic intrusions
Place:
Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic
Names Information System (GNIS)
Place_Keyword: Southwest Montana
Place_Keyword: Montana
Temporal:
Temporal_Keyword_Thesaurus: American Geological Institute Glossary of
Geology
Temporal_Keyword: upper Miocene
Temporal_Keyword: lower Pliocene
Temporal_Keyword: upper Eocene
Temporal_Keyword: lower Oligocene
Temporal_Keyword: middle Eocene
Temporal_Keyword: Quaternary
Temporal_Keyword: Paleocene
Temporal_Keyword: Cretaceous
Temporal_Keyword: Upper Cretaceous
Temporal_Keyword: Mesozoic
Temporal_Keyword: Paleozoic
Temporal_Keyword: Proterozoic
Temporal_Keyword: Archean
Access_Constraints: None
Use_Constraints: Request acknowledgement of the U.S. Geological Survey in any
products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ed du Bray
Contact_Organization: USGS
Contact_Address:
Address_Type: mailing and physical address
Address: Box 25046, MS 973
Address: Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: U.S.A.
Contact_Voice_Telephone: 303-236-5591
Contact_Facsimile_Telephone: 303-236-3200
Contact_Electronic_Mail_Address: edubray@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
http://pubs.usgs.gov/ds/454/downloads/DS454_Plate.pdf
Browse_Graphic_File_Description: Graphic representation of map layout
Browse_Graphic_File_Type: PDF
Data_Set_Credit: Paul D. Denning prepared the GIS database
Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600)
Service Pack 2; ESRI ArcCatalog 9.3.1.1850
Data_Quality_Information:
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 technician that created the digital database.
Automated 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 for consistency with basic geologic principles and general
conformity to USGS mapping standards.
Completeness_Report: Data are complete. All geospatial database elements are
attributed.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Harry W. Smedes
Originator: Montis R. Klepper
Originator: Robert I. Tilling
Title: Preliminary map of plutonic units of the Boulder batholith,
southwestern Montana
Publication_Date: 1988
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 88-283
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: United States Geological Survey
Source_Scale_Denominator: 200,000
Type_of_Source_Media: map
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1988
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: Smedes and others (1988)
Source_Contribution: Geology
Process_Step:
Process_Description: Paul Denning scanned the original, stable-base copy
of the 1988 geologic map (Smedes and others, 1988) and exported the
resulting data to ArcMap where polygons were cleaned up and attributed.
The resulting digital geologic map is intended to be a faithful
representation of the original map. The ArcMap data were exported to
Adobe Illustrator to create the PDF version of the geologic map.
Locations for all samples for which geochemical data were compiled were
added to the PDF version of the geologic map by Ed du Bray. More
details of the geochemical data compilation process are provided in the
accompanying text, DS454.pdf
Process_Date: 2008-2009
Process_Contact:
Contact_Information:
Contact_Person_Primary: