Geochem_2ls_weakeracids - Lake sediment geochemistry

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Saskatchewan Industry and Resources
Title: Geochem_2ls_weakeracids - Lake sediment geochemistry
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
During the intense level of activity directed toward the exploration for uranium in the 1970s, the Saskatchewan Geological Survey and the Geological Survey of Canada funded the collection of several thousand samples of sediments and waters from lakes around the Athabasca Sandstone. All sediment samples were analyzed for U, Cu, Ni, Pb, Zn, Co, Fe and Mn. Selected samples were analyzed for a wide range of additional elements. All lake waters were analyzed for U, F-, and pH, and several hundred samples were analyzed for additional elements and parameters. The Summary Table that precedes this text shows the numbers of samples and elements, and the source of data from which the 8,939 samples listed in the 9 Tables are derived.

Over 20 years ago the data in these listings were coded into the Saskatchewan Geological Survey’s ‘Geochemical Data File’, designed in the 1970s (Dunn, 1978b, 1979), and developed by SaskComp (the computer programming department of the Saskatchewan government at that time). The only database listed in the present report that was not in the Geochemical Data File was GSC Open File #779, jointly produced by the SGS and GSC (Coker and Dunn, 1981, 1983) and containing data from detailed surveys of the IAEA/NEA Athabasca Test Area (adjacent to Wollaston Lake). The old Geochemical Data File was state-of-the-art at the time, and data have been available for public scrutiny since inception in 1977. Demonstrations of the File were given at the SGS Open House meetings in 1977 and 1978.

The explosive development of personal computers during the past 20 years has made the original Geochemical Data File something of a dinosaur, and the data have been difficult to access and manipulate. The present data file is a compilation that has resulted from detailed evaluation, streamlining, editing and breakdown of the data into simplified Excel files that can easily be manipulated by anyone with a modest knowledge of computers. These data are of historic value and their re-evaluation could assist in current uranium exploration programmes. Of particular value is their use in environmental studies, since they represent a 1970s snapshot of the chemistry of the northern Saskatchewan environment prior to mine developments. At the start of sample collection in 1975 Key Lake had not been drained and the only mine site was the pit at Rabbit Lake.

This compilation has divided the data into 9 tables, each presented as a shape file. There are 6 shape files of lake sediment data (1LS - 6LS) and 3 shape files of lake water data (4LW - 6LW). Lake water samples were from the same sites as the lake sediments listed in files 4LS - 6LS, hence they have been given the same numeric designation.

The data are mostly compatible among the Tables. However, although analytical methods and quality control protocols were similar, they were sufficiently different to warrant treating the data as separate listings. For any regional plotting of data extracted from all Tables these differences should be considered when interpreting distribution patterns.

Of particular relevance is that all sediment samples were analyzed for U by neutron activation, with the exception of 158 samples (Table 2LS) where determinations were by fluorometry. These data sets should be fully compatible, because the two techniques provide similar values. Comparison of U data from sediment samples collected and analyzed over four years, then reanalyzed as one batch has shown excellent precision and accuracy (Coker and Dunn, 1981). All U in water determinations were by fluorometry, and all F- by selective ion electrode. Loss on ignition (LOI) data were determined by ignition at 500o C for 4 hours.

Purpose: Part of Geological Atlas of Saskatchewan data
Supplemental_Information:
Table 2LS This subset of samples was analyzed for U by fluorometry, and for trace elements by AA following digestion with 4M HCl and 1M HNO3. Since this acid mixture is weaker than the strong aqua regia leach used on the samples listed in Table 1LS, these data are shown separately.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1975
Ending_Date: 1978
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.261489
East_Bounding_Coordinate: -103.991265
North_Bounding_Coordinate: 59.170235
South_Bounding_Coordinate: 58.932870
Keywords:
Theme:
Theme_Keyword: Geology
Theme_Keyword: Geochemistry
Theme_Keyword: Lake sediment
Theme_Keyword: Lake water
Place:
Place_Keyword: Saskatchewan
Access_Constraints: No restrictions
Use_Constraints: No restrictions
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Slimmon
Contact_Organization: Saskatchewan Industry and Resources
Contact_Position: GIS Project Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 2101 Scarth Street
City: Regina
State_or_Province: Saskatchewan
Postal_Code: S4P 3V7
Country: Canada
Contact_Voice_Telephone: 306-787-9181
Contact_Facsimile_Telephone: 306-787-1284
Contact_Electronic_Mail_Address: bslimmon@ir.gov.sk.ca
Hours_of_Service: Normal office hours
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350

Data_Quality_Information:
Lineage:
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\Aep_projects\Metadata_FGDC_XML\metadata.xml
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\Aep_projects\Metadata_FGDC_XML\metadata_lakechemdata.xml

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 158

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -105.000000
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: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983_CSRS98
Ellipsoid_Name: Geodetic_Reference_System_of_1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Geochem_2ls_weaker_acid
Attribute:
Attribute_Label: FID
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: UTM_E
Attribute:
Attribute_Label: UTM_N
Attribute:
Attribute_Label: NTS
Attribute:
Attribute_Label: SAMPLE__
Attribute_Definition: Sample number
Attribute:
Attribute_Label: YR
Attribute_Definition: Year the sample was collected
Attribute:
Attribute_Label: SM
Attribute_Definition: Sample medium
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OZ
Enumerated_Domain_Value_Definition: Organic-rich ooze
Enumerated_Domain:
Enumerated_Domain_Value: SD
Enumerated_Domain_Value_Definition: Sand rich
Attribute:
Attribute_Label: ROCK
Attribute_Definition: Interpreted underlying rock type
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GNSS
Enumerated_Domain_Value_Definition: Gneiss
Enumerated_Domain:
Enumerated_Domain_Value: SNDS
Enumerated_Domain_Value_Definition: Sandstone
Enumerated_Domain:
Enumerated_Domain_Value: MARK
Enumerated_Domain_Value_Definition: Meta-arkose
Enumerated_Domain:
Enumerated_Domain_Value: BGNS
Enumerated_Domain_Value_Definition: Biotite gneiss
Enumerated_Domain:
Enumerated_Domain_Value: DLMT
Enumerated_Domain_Value_Definition: Dolomite
Enumerated_Domain:
Enumerated_Domain_Value: PCSC
Enumerated_Domain_Value_Definition: Pelitic schist
Enumerated_Domain:
Enumerated_Domain_Value: MRBL
Enumerated_Domain_Value_Definition: Marble
Enumerated_Domain:
Enumerated_Domain_Value: MGMT
Enumerated_Domain_Value_Definition: Migmatite
Enumerated_Domain:
Enumerated_Domain_Value: GRNT
Enumerated_Domain_Value_Definition: Granite
Enumerated_Domain:
Enumerated_Domain_Value: AMPB
Enumerated_Domain_Value_Definition: Amphibolite
Enumerated_Domain:
Enumerated_Domain_Value: MSDM
Enumerated_Domain_Value_Definition: Meta-sediment
Enumerated_Domain:
Enumerated_Domain_Value: SMRK
Enumerated_Domain_Value_Definition: Sedimentary rock
Enumerated_Domain:
Enumerated_Domain_Value: WLST
Enumerated_Domain_Value_Definition: Wollaston Group
Enumerated_Domain:
Enumerated_Domain_Value: ATWL
Enumerated_Domain_Value_Definition: Athabasca-Wollaston contact zone
Enumerated_Domain:
Enumerated_Domain_Value: MDJT
Enumerated_Domain_Value_Definition: Mudjatik Group
Enumerated_Domain:
Enumerated_Domain_Value: ATMD
Enumerated_Domain_Value_Definition: Athabasca-Mudjatik contact zone
Attribute:
Attribute_Label: LOI
Attribute_Definition: percent
Attribute:
Attribute_Label: U
Attribute_Definition: ppm
Attribute:
Attribute_Label: CU
Attribute_Definition: ppm
Attribute:
Attribute_Label: NI
Attribute_Definition: ppm
Attribute:
Attribute_Label: PB
Attribute_Definition: ppm
Attribute:
Attribute_Label: ZN
Attribute_Definition: ppm
Attribute:
Attribute_Label: CO
Attribute_Definition: ppm
Attribute:
Attribute_Label: FE
Attribute_Definition: ppm
Attribute:
Attribute_Label: MN
Attribute_Definition: ppm
Attribute:
Attribute_Label: V
Attribute_Definition: ppm
Attribute:
Attribute_Label: MO
Attribute_Definition: ppm
Attribute:
Attribute_Label: AG
Attribute_Definition: ppm

Distribution_Information:
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.004

Metadata_Reference_Information:
Metadata_Date: 20070926
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Slimmon
Contact_Organization: Saskatchewan Industry and Resources
Contact_Position: GIS Project Geologist
Contact_Address:
Address_Type: mailing and physical address
City: Reginal
State_or_Province: Saskatchewan
Postal_Code: S4P 3v7
Country: Canada
Contact_Voice_Telephone: 306-787-9181
Contact_Facsimile_Telephone: 306-787-1284
Contact_Electronic_Mail_Address: bslimmon@ir.gov.sk.ca
Hours_of_Service: Normal office hours
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.8.6 on Wed Sep 26 14:24:34 2007