Identification_Information:
Citation:
Citation_Information:
Title: Geologic map of the Kechumstuk fault zone in the Mount Veta area, Fortymile mining district, east-central Alaska
Geospatial_Data_Presentation_Form: map
Online_Linkage: http://dx.doi.org/10.3133/sim3291
Originator: Day, Warren C.
Originator: O'Neill, J. Michael
Originator: Dusel-Bacon, Cynthia
Originator: Aleinikoff, John N.
Originator: Siron, Christopher R.
Publication_Date: 2014
Edition: 1.1
Series_Information:
Series_Name: Scientific Investigations Map
Issue_Identification: 3291
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Description:
Abstract:
This map was developed by the U.S. Geological Survey Mineral Resources Program
to depict the fundamental geologic features for the western part of the
Fortymile mining district of east-central Alaska, and to delineate the location
of known bedrock mineral prospects and their relationship to rock types and
structural features.
This geospatial map database presents a 1:63,360-scale geologic map for the
Kechumstuk fault zone and surrounding area, which lies 55 km northwest of
Chicken, Alaska. The Kechumstuk fault zone is a northeast-trending zone of
faults that transects the crystalline basement rocks of the Yukon-Tanana
Upland of the western part of the Fortymile mining district. The crystalline
basement rocks include Paleozoic metasedimentary and metaigneous rocks as
well as granitoid intrusions of Triassic, Jurassic, and Cretaceous age.
The geologic units represented by polygons in this dataset are based on new
geologic mapping and geochronological data, coupled with an interpretation of
regional and new geophysical data collected by the Alaska Department of
Natural Resources, Division of Geological and Geophysical Surveys. The
geochronological data are reported in the accompanying geologic map text
and represent new U-Pb dates on zircons collected from the igneous and
metaigneous units within the map area.
Purpose:
The purpose of this map developed by the US Geological Survey Mineral
Resources Program is to depict the fundamental geologic features for the western
part of the Fortymile Mining District of east-central Alaska and to delineate the
location of known bedrock mineral prospects and their relationship to rock types
and structural features such as faults. The geospatial data in this file include
polygons of geologic units, geologic contacts (known, inferred, and concealed),
faults (known, inferred, and concealed) for normal, thrust, strike slip, and those
with undetermined sense of offset direction. As well, the traces of anticline and
synclines, which are interpreted in the metasedimentary rocks southwest of Mount Veta.
Expanded unit descriptions are presented in associated documentation.
Supplemental_Information:
>Attributes for 9 data layers are defined in this section. These layers (feature classes) include:
>
>Attitudes: foliation measurement points
>Alteration: alteration area polygons
>Fold_Axes: fold axes lines
>Geology: geologic unit polygons
>Geology_Lines: fault and contact lines
>Prospects: prospect location points
>Lineations: lineation measurement points
>SHIRMP_U_Pb_Z ircon_Ages: sample location points for rock age-dating
>Xsec_Trace: location of geologic cross section
>
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -143.388013
East_Bounding_Coordinate: -142.695612
North_Bounding_Coordinate: 64.256302
South_Bounding_Coordinate: 63.994165
Native_Data_Set_Environment: Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.3500
Point_of_Contact:
Contact_Information:
Contact_Address:
Address: Denver Federal Center, Mail Stop 911
Address_Type: mailing and physical address
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80225
Country: USA
Contact_Person_Primary:
Contact_Person: Warren C. Day
Contact_Organization: U.S. Geological Survey
Contact_Position: Research Geologist
Contact_Voice_Telephone: 303-236-6484
Contact_Facsimile_Telephone: 303-236-5448
Contact_Electronic_Mail_Address: wday@usgs.gov
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2008
Ending_Date: 2010
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Access_Constraints: None
Use_Constraints:
These data are intended for use at 1:63,360-scale. Data have been checked to ensure
the accuracy. If any errors are detected, please notify the originating office. The
U.S. Geological Survey strongly recommends that careful attention be paid to the metadata
file associated with these data.
Acknowledgement of the U.S. Geological Survey would be appreciated in products
derived from these data.
Data_Set_Credit:
Spatial data sets supporting the geologic map were developed by
the U.S. Geological Survey, Denver, CO (W.C. Day and C.A. San Juan) with support from the Full Metal Minerals, LLC.
Keywords:
Place:
Place_Keyword: Chicken
Place_Keyword: Mount Veta
Place_Keyword: Kechumstuk Creek
Place_Keyword: Yukon-Tanana Upland
Place_Keyword: Alaska
Place_Keyword_Thesaurus: none
Place_Keyword: United States
Place_Keyword: USA
Theme:
Theme_Keyword: rocks and deposits
Theme_Keyword: geologic structure
Theme_Keyword: economic geology
Theme_Keyword: geochronology
Theme_Keyword: mineral resources
Theme_Keyword_Thesaurus: USGS Thesarus
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Kechumstuk fault
Stratum:
Stratum_Keyword: Chicken metamorphic complex
Stratum_Keyword: Granite of Corner
Stratum_Keyword: Granite of Gold Bottom Creek
Stratum_Keyword: Granite of Kechumstuk Creek
Stratum_Keyword: Jurassic igneous intrusions
Stratum_Keyword: Late Cretaceous igneous intrusions
Stratum_Keyword: Quartz monzonite of Mount Veta
Stratum_Keyword_Thesaurus: none
Temporal:
Temporal_Keyword: Jurassic
Temporal_Keyword: Late Cretaceous
Temporal_Keyword: Triassic
Temporal_Keyword_Thesaurus: none
Data_Quality_Information:
Logical_Consistency_Report:
All map layers were checked for locational accuracy of features,
duplicate features, attribute consistency, polygon closure, and line directionality. Each
line segment has a length and directionality that is appropriate for the geologic feature it
depicts. The map was reviewed by USGS staff for consistency with basic geologic principles
and general conformity to USGS mapping standards.
Completeness_Report:
Data provided in the database represent the first 1:63,360 geologic
mapping of the study area. These data are considered complete and the highest resolution
data presently available.
Attribute_Accuracy:
Attribute_Accuracy_Report:
The Attribute values in each database layer were assigned by the
map authors. Attribute fields and values were reviewed and checked for accuracy and
consistency of terms.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Most of the geologic features in this database are
considered to be accurately located and within +/- 10 meters of their actual location on
the 1:63,360-scale topographic base maps. Accuracy of the geologic features diminishes
in areas that are poorly exposed and vegetated. The 1:63,360 topographic maps and
corresponding Digital Raster Graphics (DRGs) used as the primary mapping base for
this project were assumed to meet the National Map Accuracy Standard of +/- 32 meters.
Points data obtained from GPS devices have an accuracy of +/- 3 meters
Lineage:
Process_Step:
Process_Description: Geologic mapping and data capture was completed during summer
field investigations conducted 2008-2010. Resulting field maps were scanned,
georegistered, and digitized using ArcGIS 10. Prospect, observation, and rock
sample locations, digitally recorded with hand-held GPS devices, were imported
into ArcGIS to produce the point features in this data set. Rock ages were
determined by Sensitive High Resolution Ion Microprobe (SHRIMP) analysis at
USGS laboratories in Stanford, CA. Geospatial layers were attributed appropriately,
and features were symbolized to produce digital maps.
Process_Date: 2012
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 784
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 7
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -141.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0000001
Ordinate_Resolution: 0.0000001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
>Attributes for 9 data layers are defined in this section. These layers (feature classes) include:
>
>Attitudes: foliation measurement points
>Alteration: alteration area polygons
>Fold_Axes: fold axes lines
>Geology: geologic unit polygons
>Geology_Lines: fault and contact lines
>Prospects: prospect location points
>Lineations: lineation measurement points
>SHIRMP_U_Pb_Z ircon_Ages: sample location points for rock age-dating
>Xsec_Trace: location of geologic cross section
>
>>
>>Unique item list for 'Geology_area':
>>Unit Description Age
>>Qa Alluvial and fluvial deposits Holocene
>>Qla Landslide deposits Holocene
>>Qs Solifluction deposits Holocene
>>Qf Young alluvial fan deposits Holocene
>>Qc Colluvium Holocene
>>Tb Basaltic to andesitic dikes Eocene?
>>Kgu Granite, undivided Cretaceous
>>Kgvc Granite of Veta Creek Late Cretaceous
>>Kgkc Granite of Ketchumstuk Creek Late Cretaceous
>>Kggp Porphyritic granite of Gold Bottom Creek Late Cretaceous
>>Kgg Granite of Gold Bottom Creek Late Cretaceous
>>Kr Rhyolite dikes Late Cretaceous
>>Kdm Mafic dikes Early? and Late? Cretaceous
>>Kqfp Quartz-feldspar porphyry Late Cretaceous
>>Kgc Granite of Corner Early Cretaceous
>>Jmig Migmatite Early Jurassic
>>Jgmv Quartz monzanite of Mount Veta Early Jurassic
>>Jt Tonalite Early Jurassic
>>MzPzmh Metahornblendite pre-Early? Cretaceous
>>Trg Hornblende granodiorite Late Triassic
>>Pzmv Metavolcanic and lesser metasedimentary rocks Middle Mississippian and older
>>MDag Augen gniess Early Mississippian to Late Devonian
>>Dog Biotite orthogneiss Late Devonian
>>Pzq Quartzite-rich metasediments, undivided Middle Paleozoic or older
>>Pzm Marble Paleozoic
>>Pzqm Quartzite and mafic volcaniclastic metasediment, undivided Pre-Late Devonian
>>Pzum Ultramafic late to middle Paleozoic
>>Pzam Amphibolite and metagabbro, undivided middle Paleozoic or older
>>Pzms Metasediments, undivided middle Paleozoic or older
>>
Entity_and_Attribute_Detail_Citation: None
Detailed_Description:
Entity_Type:
Entity_Type_Label: Attitudes
Entity_Type_Definition: Location and value of foliation
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Field_Numb
Attribute_Definition: Unique identification assigned to each field measurement location
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Alpha numeric number used by field investigators.
Attribute:
Attribute_Label: Latitude
Attribute_Definition: Latitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 63.994165
Range_Domain_Maximum: 64.256302
Attribute_Units_of_Measure: Decimal degree
Attribute:
Attribute_Label: Longitude
Attribute_Definition: Longitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -143.2958
Range_Domain_Maximum: -142.78369
Attribute_Units_of_Measure: Decimal degree
Attribute:
Attribute_Label: Strike
Attribute_Definition: Strike of foliation (0-360 degrees) using the right-hand rule
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 352
Attribute_Units_of_Measure: Degree
Attribute:
Attribute_Label: Dip
Attribute_Definition: Dip of foliation (0-90 degrees)
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 90
Attribute_Units_of_Measure: Degree
Detailed_Description:
Entity_Type:
Entity_Type_Label: Alteration
Entity_Type_Definition: Areas of hydrothermal alteration
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Type
Attribute_Definition: Type of alteration
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Alternation described as silicic or quartz-iron oxide.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Fold_Axes
Entity_Type_Definition: Lines representing mapped or inferred traces of fold axes
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Type
Attribute_Definition: Type of fold axes
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Axes of antiform or synform folds with locational certainty.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Geology
Entity_Type_Definition: Polygons representing mappable geologic units
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Unit_Name
Attribute_Definition: Geologic unit label where the first letters are capitalized and represent the geologic age of the unit.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Detailed description provided in accompanying report.
Attribute:
Attribute_Label: Unit_age
Attribute_Definition: Geologic age of the unit.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Geologic age of map unit.
Attribute:
Attribute_Label: Descrip
Attribute_Definition: Abbreviated description of geologic unit
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Detailed description provided in accompanying report.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Geology_Lines
Entity_Type_Definition: Lines representing the mapped or inferred traces of contacts, folds, and faults. Also includes the study area boundary.
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Type
Attribute_Definition: Type and locational accuracy of line (contact, fault)
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Contact or fault and locational accuracy.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Length of feature in internal units.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Lineations
Entity_Type_Definition: Location and attitude values of linear features
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Field_Numb
Attribute_Definition: Unique identification assigned to each field measurement location
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Alpha numeric number used by field investigators.
Attribute:
Attribute_Label: L_Trend
Attribute_Definition: Trend of mineral lineation (0-360 degrees)
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 310
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: L_Plunge
Attribute_Definition: Plunge of mineral lineation (0-90 degrees)
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 42
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: Latitude
Attribute_Definition: Latitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 64.0189
Range_Domain_Maximum: 64.2354942
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: Longitude
Attribute_Definition: Longitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -143.2958
Range_Domain_Maximum: -142.80876
Attribute_Units_of_Measure: degree
Detailed_Description:
Entity_Type:
Entity_Type_Label: Prospects
Entity_Type_Definition: Location, name and type of mineral prospects
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Name
Attribute_Definition: Name of mineral prospect
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Common name of prospect feature.
Attribute:
Attribute_Label: Type
Attribute_Definition: Type of mineral prospect
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Prospect feature described as either a prospect pit or drill holes.
Attribute:
Attribute_Label: Latitude
Attribute_Definition: Latitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 64.091111
Range_Domain_Maximum: 64.235278
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: Longitude
Attribute_Definition: Longitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -143.211346
Range_Domain_Maximum: -142.826944
Attribute_Units_of_Measure: degree
Detailed_Description:
Entity_Type:
Entity_Type_Label: SHIRMP_U_Pb_Zircon_Ages
Entity_Type_Definition: Location and age of rock samples from Uranium Lead SHRIMP methods
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Samp_Numb
Attribute_Definition: Unique identification assigned to each sample
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Alpha numeric number used by field investigators.
Attribute:
Attribute_Label: Field_Numb
Attribute_Definition: Unique identification assigned to each sample collected from field site
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Alpha numeric number used by field investigators.
Attribute:
Attribute_Label: Latitude
Attribute_Definition: Latitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 64.089
Range_Domain_Maximum: 64.2361
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: Longitude
Attribute_Definition: Longitude coordinates of field site reported in decimal degrees
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -143.3097
Range_Domain_Maximum: -142.8089
Attribute_Units_of_Measure: degree
Attribute:
Attribute_Label: Unit_Name
Attribute_Definition: Geologic unit label where the first letters are capitalized and represent the geologic age of the unit.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Detailed description provided in accompanying report.
Attribute:
Attribute_Label: Age_ZrCore
Attribute_Definition: Age (in millions of years) of a zircon core determined from Sensitive High Resolution Ion Microprobe (SHRIMP) analysis.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: SHRIMP age plus error range.
Attribute:
Attribute_Label: Age_ZrRim
Attribute_Definition: Age (in millions of years) of a zircon rim determined from Sensitive High Resolution Ion Microprobe (SHRIMP) analysis.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: SHRIMP age plus error range.
Attribute:
Attribute_Label: Rock_Type
Attribute_Definition: Geologic description of rock sample
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: SHRIMP age plus error range.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Xsec_Trace
Entity_Type_Definition: Location of geologic cross section
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Domain_Values:
Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Type
Attribute_Definition: Type of line
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Distinguishes map boundary from cross section trace.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Length of feature in internal units.
Distribution_Information:
Resource_Description: Downloadable Data
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: USGS Information Services
Contact_Address:
Address_Type: mailing address
Address: Box 25286, DFC
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 1-888-ASK-USGS
Contact_Electronic_Mail_Address: usgsstore@usgs.gov
Distribution_Liability:
Although this information product, for the most part, is in the public
domain, it also contains copyrighted material as noted in the text.
Permission to reproduce copyrighted items for other than personal use
must be secured from the copyright owner.
Any use of trade, product or firm names is for descriptive purposes
only and does not imply endorsement by the U.S. Government.
This database, identified as SIM3291, has been approved
for release and publication by the U.S. Geological Survey (USGS).
Although this database has been subjected to rigorous review and
is substantially complete, the USGS reserves the right to revise
the data pursuant to further analysis and review. Furthermore,
it is released on condition that neither the USGS nor the U.S.
Government may be held liable for any damages resulting from its
authorized or unauthorized use.
Although these data have been processed successfully on a computer
system at the U.S. Geological Survey (USGS), no warranty, expressed or
implied is made regarding the display or utility of the data on any
other system, or for general or scientific purposes, nor shall the act
of distribution constitute any such warranty. The USGS shall not be
held liable for improper or incorrect use of the data described
and/or contained herein.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI File Geodatabase
Format_Version_Number: 10.0
File_Decompression_Technique: Unzip
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://dx.doi.org/10.3133/sim3291
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20130311
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carma San Juan
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: Box 25046, Mail Stop 973
City: Lakewood
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: (303) 236-1800
Contact_Facsimile_Telephone: (303) 236-3200
Contact_Electronic_Mail_Address: csanjuan@usgs.gov