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Preliminary digital map of cryptocrystalline occurrences in northern Nevada: rkhnd (ArcView shapefile) and rkhnd_crypto (ArcInfo point coverage)

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Moyer, Lorre A.

Publication_Date: 1999

Title:

Preliminary digital map of cryptocrystalline occurrences in northern Nevada: rkhnd (ArcView shapefile) and rkhnd_crypto (ArcInfo point coverage)

Geospatial_Data_Presentation_Form: Digital

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-523

Publication_Information:

Publication_Place: Spokane, Washington
Publisher: U.S. Geological Survey

Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of99-523/>

Description:

Abstract:: A polygon Arcview shapefile of northern Nevada cryptocrystalline occurrences derived from Nevada rockhound guides and converted to a coverage.
Purpose:: The polygon shapefile was combined with a point shapefile derived from the U.S. Geological Survey's Mineral Resources Data System (MRDS) to create a preliminary digital map of cryptocrystalline occurrences of northern Nevada. The original intent was to identify potential sources of raw materials for tools used by indigenous people of northern Nevada. The dataset was created to assist government agencies and others in making resource management decisions using geographic information systems (GIS). Uses of the spatial data set include, but are not limited to, natural and cultural resource management, interdisciplinary activities, recreational rockhounding, and gold exploration.
Supplemental_Information:: The primary focus was potential raw material sites for tools made by native northern Nevadans. Archaeologists routinely rely on pottery and projectile points for dating techniques. Since basketry was more appropriate for the nomadic lifestyle of the native northern Nevadans, the major dating device for the Great Basin archaeological sites has been the projectile point. Preliminary investigation of the types of raw materials used for tool making by indigenous people of Northern Nevada led to decisions regarding the kind of occurrences considered to be cryptocrystalline for this spatial data set. The rockhound sites were descriptive and not based in a coordinate system. The ArcView distance-measuring tool was used to locate the sites in creating the ArcView 3.0 polygon theme, rkhnd.shp. Eighty-two cryptocrystalline sites were spatially referenced using Nevada 1:100,000 scale digital raster graphic (DRG) maps in UTM projection as background images (Nevada Bureau of Mines and Geology, 1996). Sites were located by measuring described distances and directions along roads and marking with polygon shapes. The size of the polygon represents the distributed or scattered area of the cryptocrystalline material, not the amount of material. The smooth, symmetrical (rather than irregular) shape of the polygon reflects the lack of point-to-point accuracy resulting from the location descriptions. A REFERENCE field numerically codes location accuracy in the polygon theme table, rkhnd.dbf. The polygon TYPE field categorizes the cryptocrystalline material for each rockhound site, and attribute color-coding corresponds to the TYPE field in the point theme table. A MRDS point theme and rockhound polygon theme were combined with an ARC/INFO coverage of Nevada county boundaries and an ArcView 3.0 layout was designed at 1:750,000 scale in UTM Zone 11 map projection. An additional ARC/INFO coverage of northern Nevada roads was used to create the digital preliminary map of northern Nevada cryptocrystalline occurrences.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 1975

Single_Date/Time:

Calendar_Date: 1983

Single_Date/Time:

Calendar_Date: 1989

Single_Date/Time:

Calendar_Date: 1991

Currentness_Reference: Publication dates of rockhound guide sources

Status:

Progress: Complete
Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -120.0252
East_Bounding_Coordinate: -114.4140
North_Bounding_Coordinate: 41.9792
South_Bounding_Coordinate: 39.0080

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: non-metallic mineral resources
Theme_Keyword: natural resource exploration
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: none
Theme_Keyword: chalcedony
Theme_Keyword: opal
Theme_Keyword: jasper
Theme_Keyword: chert
Theme_Keyword: obsidian
Theme_Keyword: cutting material

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: none
Place_Keyword: northern Nevada

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: 32031 = Washoe
Place_Keyword: 32027 = Pershing
Place_Keyword: 32013 = Humboldt
Place_Keyword: 32001 = Churchill
Place_Keyword: 32029 = Storey
Place_Keyword: 32033 = White Pine
Place_Keyword: 32015 = Lander
Place_Keyword: 32011 = Eureka
Place_Keyword: 32007 = Elko
Place_Keyword: 32019 = Lyon

Access_Constraints: None

Use_Constraints:

For use at 1:750,000 scale. Spatial data accuracy varies greatly due to data sources, and reliance on descriptive information rather than coordinate locations in rockhound guides. For some purposes a field check may be advisable.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, Reno Field Office
Contact_Person: Lorre A. Moyer

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address
Address: USGS C/O Mackay School of Mines MS-176, University of Nevada
City: Reno
State_or_Province: Nevada
Postal_Code: 89557
Country: USA

Contact_Voice_Telephone: 775-784-5552

Contact_Facsimile_Telephone: 775-784-5079

Contact_Electronic_Mail_Address: lorre@usgs.gov

Hours_of_Service: 800-1600 PT

Data_Set_Credit:

Katherine Connors and Gary Raines of the USGS, and Ron Hess of the Nevada Bureau of Mines and Geology assisted in the direction and creation of this data set.

Native_Data_Set_Environment: ArcView version 3.1 shapefile format

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: Data accuracy varies greatly due to data sources, and reliance on descriptive information in rockhound guides (rather than coordinate locations). For some purposes a field check may be advisable. All attributes created were verified by display in the spatial database, but no formal tests were performed.

Logical_Consistency_Report:

These data are believed to be logically consistent, although no formal tests were performed.

Completeness_Report:

The area of interest was within the northern Nevada state boundary and bounded in the south by 39 degrees north lattitude. The cryptocrystalline materials considered were chalcedony, chert, jasper, opal, obsidian, and cutting materials.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:: No tests or field checks were performed, and accuracy varies according to description accuracy in the rockhound guides. Polygon size represents the distribution not quantity of the crytocrystalline material. The smooth polygon shape reflects the lack of point to point accuracy resulting from the location descriptions.

Vertical_Positional_Accuracy:

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Johnson, Robert Neil

Publication_Date: 1978

Title: Nevada Utah Gem Atlas

Edition: 3rd

Geospatial_Data_Presentation_Form: location description

Publication_Information:

Publication_Place: Susanville, California
Publisher: Cy Johnson and Son

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1978

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Johnson, 1978

Source_Contribution: site location descriptions

Source_Information:

Source_Citation:

Citation_Information:

Originator: Klein, James

Publication_Date: 1983

Title: Where to Find Gold and Gems in Nevada

Geospatial_Data_Presentation_Form: location description

Publication_Information:

Publication_Place: Pico Rivera, California
Publisher: Gem Guides Book Co.

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1983

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Klein, 1983

Source_Contribution: site location descriptions

Source_Information:

Source_Citation:

Citation_Information:

Originator: Mitchell, James R.

Publication_Date: 1991

Title: Gem Trails of Nevada

Geospatial_Data_Presentation_Form: location description

Publication_Information:

Publication_Place: Baldwin Park, California
Publisher: Gem Guides Book Co.

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1991

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Mitchell, 1991

Source_Contribution: site location descriptions

Source_Information:

Source_Citation:

Citation_Information:

Originator: J.B. Murphy

Publication_Date: 1975

Title: Rockhound's Map of Nevada

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: Special Publication
Issue_Identification: 1

Publication_Information:

Publication_Place: Nevada
Publisher: Nevada Bureau of Mines and Geology

Source_Scale_Denominator: 100000

Type_of_Source_Media: paper map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1975

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Murphy,1975

Source_Contribution: site locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 1995

Title: Minerals Resources Data System (MRDS)

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Type_of_Source_Media: digital database

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1995

Source_Currentness_Reference: 1995

Source_Citation_Abbreviation: MRDS, 1995

Source_Contribution: Cryptocrystalline site locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lorre A. Moyer

Publication_Date: 1999

Title:

Preliminary digital map of cryptocrystalline occurrences in northern Nevada: mrds (ArcView shapefile) and mrds_crypto (ArcInfo point coverage)

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-523

Publication_Information:

Publication_Place: Spokane, WA
Publisher: U.S. Geological Survey

Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of99-523/>

Type_of_Source_Media: digital data

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1999

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: mrds shapefile and mrds_crypto coverage

Source_Contribution:

The MRDS point theme was used with a polygon theme shapefile derived from Nevada rockhound guides to create a preliminary map of northern Nevada cryptocrystalline occurrences. The original intent was to identify potential sources of raw materials for tools used by indigenous people of northern Nevada. The dataset was created to assist governmental agencies and others in making resource management decisions through the use of geographic information systems (GIS). Uses of the spatial data set include, but are not limited to natural, and cultural resource management, interdisciplinary activities, recreational rockhounding, and gold exploration.

Process_Step:

Process_Description:: The original rockhound descriptions were used to locate sites using the ArcView distance measuring tool in an ArcView polygon theme, rkhnd.shp. The Nevada 1:100,000 scale digital raster graphic (DRG) maps were used as a spatial reference.
Source_Used_Citation_Abbreviation: Johnson, 1978
Source_Used_Citation_Abbreviation: Klein, 1983
Source_Used_Citation_Abbreviation: Mitchell, 1991
Source_Used_Citation_Abbreviation: Murphy,1975
Process_Date: 1999

Process_Step:

Process_Description:: A point coverage of northern Nevada cryptocrystalline occurrences extracted from the U.S. Geological Survey's Minerals Resource Data System (MRDS) and converted into an ArcView shapefile.
Several search strategies were designed to capture records from the MRDS database that represented cryptocrystalline occurrences. The following searches of MRDS fields were successful using the MRDS subsearch editor: NonOre Minerals CONTAINS opal@, chalcedon@, chert, jasper@ ; Ore Minerals CONTAINS opal@, chalcedon@, Vol@; CommodPresSort CONTAINS gem@, sil@; Host Rock Type CONTAINS opal@, chert@, sil@; DepDescComments CONTAINS crypto@; GeologyComments CONTAINS crypto@, vitr@; USGSModelfirst CONTAINS hot spring@. Obsidian searches of MRDS provided no additional records. The MRDS records meeting the search criteria (128) were converted to DBF files, brought into an ARC/INFO point coverage, projected to UTM Zone 11, and converted to an ArcView shapefile.
Source_Used_Citation_Abbreviation: MRDS, 1995
Process_Date: 1999
Source_Produced_Citation_Abbreviation: mrds shapefile and mrds_crypto coverage

Process_Step:

Process_Description: Creation of original metadata record

Process_Date: 20000622

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Lorre A. Moyer

Contact_Position: Geologist

Contact_Address:

Address_Type: Mailing and physical address
Address: USGS C/O Mackay School of Mines MS-176, University of Nevada
City: Reno
State_or_Province: Nevada
Postal_Code: 89557
Country: USA

Contact_Voice_Telephone: 775-784-5552

Contact_Facsimile_Telephone: 775-784-5079

Contact_Electronic_Mail_Address: lorre@usgs.gov

Hours_of_Service: 800 - 1600 PT

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 82

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 11

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -117
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 200
Ordinate_Resolution: 200

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

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Encoding_Method: Implicit coordinate

Depth_System_Definition:

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: rkhnd.dbf
Entity_Type_Definition: Shapefile attribute table

Attribute:

Attribute_Label: TYPE

Attribute_Definition: Cryptocrystalline occurrence type (character)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chalcedony

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: cutting material

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: jasper

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: obsidian

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: opal

Attribute:

Attribute_Label: SUBTYPE

Attribute_Definition: Cryptocrystalline occurrence subtype (character)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: agate

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Apache tears

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: onyx

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chalcedony

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chert

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: cinnabar

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fire opal

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: jasper

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: obsidian

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: opal

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: opalite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: petrified wood

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: precious opal

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: wood (petrified wood)

Attribute:

Attribute_Label: LOCATION

Attribute_Definition: Location accuracy estimation (integer)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: reasonably accurate

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: general area

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: vague

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: inaccurate

Attribute:

Attribute_Label: REFERENCE

Attribute_Definition: Sources for rockhound site locations (integer)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Rockhound's Map of Nevada

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Gem Trails of Nevada

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Nevada-Utah Gem Atlas

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: Where to Find Gold and Gems in Nevada

Attribute:

Attribute_Label: SITE_NAME
Attribute_Definition: Site name (character)

Attribute:

Attribute_Label: QUADRANGLE
Attribute_Definition: 100k quadrangle map name (character)
Attribute_Definition_Source: NBMG, 1996, Nevada DRG maps on CD-ROM

Overview_Description:

Entity_and_Attribute_Overview:: The following attributes were extracted from the MRDS database and their values (for the appropriate locations) included in mrds.dbf and mrds_crypto.pat of USGS Open-File Report 99-523:
RECORD_NO REPORTER REP_DATE REP_AFFIL UPDATER UPD_DATE UPD_AFFIL SITE SYNONYM DISTRICT REC_TYPE COUNTY STATE_CODE COUNTRY_CD QUAD QUAD1 LATITUDE LONGITUDE COMMODS PROD STATUS OWNER OPERATOR DEP_TYPE DEP_FORM DEP_SIZE SURF_UNDG HR_TYPE HR_AGE AGE_OF_MIN IG_RK_TYPE IG_RK_AGE ORE_CTRL TECTONICS ALTERATION CONCENTRAT ORE_MINS NONORE_MIN COMMENTS PROD1 PROD2 PROD3 CUM_ PROD1 CUM_PROD2 CUM_PROD3 PR_COMMENT RESERVES1 RESERVES2 RESERVES3 RESV_COM REF1 REF2 REF3 REF4 REF5 STATE_NAME COUNTRY_NM MODEL_NAME MODEL_NUM
Entity_and_Attribute_Detail_Citation:: Mineral Resources Data System metadata at <http://geo-nsdi.er.usgs.gov/metadata/digital-data/20/metadata.met>

Detailed_Description:

Entity_Type:

Entity_Type_Label: mrds data row
Entity_Type_Definition:: Fields extracted from MRDS attributes for this data set, with one additional field.

Attribute:

Attribute_Label: TYPE

Attribute_Definition: Cryptocrystalline type

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chalcedony

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chert

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: jasper

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: opal

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: silica

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey Information Services

Contact_Address:

Address_Type: mailing and physical address
Address: Box 25286
City: Denver
State_or_Province: Colorado
Postal_Code: 80225
Country: USA

Contact_Voice_Telephone: 303-202-4200

Contact_Facsimile_Telephone: 303-202-4695

Resource_Description: USGS Open-File Report 99-523

Distribution_Liability:

No warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials.

Standard_Order_Process: