Major-Oxide, Minor-Oxide, Trace-Element, and Geochemical Data from Rocks Collected in the Alaska Highway Corridor, Big Delta and Mount Hayes Quadrangles, Alaska in 2006 and 2007

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What does this data set describe?

Title:
Major-Oxide, Minor-Oxide, Trace-Element, and Geochemical Data from Rocks Collected in the Alaska Highway Corridor, Big Delta and Mount Hayes Quadrangles, Alaska in 2006 and 2007
Abstract:
Alaska Division of Geological & Geophysical Surveys (DGGS) personnel collected rock samples while mapping the bedrock geology along a 12-mile-wide swath following the Alaska Highway between Delta Junction and the eastern edge of the Mount Hayes quadrangle near Dot Lake, Alaska. This mapping is one component of the multi-year DGGS project studying the geology, geohazards and resources along the proposed gas pipeline corridor from Delta Junction to the Canadian border. In 2006, we collected 10 samples for whole rock (major- and minor-oxides, and petrogenetically important trace-elements) analysis. In 2007, we collected 111 samples for whole rock analysis and 36 rock samples for geochemical trace-element analysis. Analytical data from these rock samples are tabulated in this publication.
Supplemental_Information:
The data are available in tabular format as comma delimited ASCII files organized into six entities as described in this metadata file under the "Entity_and_Attribute_Information" section. The tables are as follows:
Table1_locations     location and description of rocks collected for trace-element geochemical analyses in 2007
Table2_geochem     concentration of trace elements in analyzed rocks collected for geochemical analyses in 2007
Table3a_06locations     location and description of rocks collected in 2006 for major-oxide, minor-oxide, and trace-element analyses
Table3b_07locations     location and description of rocks collected in 2007 for major-oxide, minor-oxide, and trace-element analyses
Table4a_06data     concentration of major oxides, minor oxides, and trace elements in analyzed rocks collected in 2006
Table4b_07data     concentration of major oxides, minor oxides, and trace elements in analyzed rocks collected in 2007
  1. How should this data set be cited?

    Solie, D.N., Werdon, M.B., Newberry, R.J., Freeman, L.K., and Lessard, R.R., 2008, Major-Oxide, Minor-Oxide, Trace-Element, and Geochemical Data from Rocks Collected in the Alaska Highway Corridor, Big Delta and Mount Hayes Quadrangles, Alaska in 2006 and 2007: Raw Data File RDF 2008-2 v. 1.0.1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 23 pp.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -144.8807
    East_Bounding_Coordinate: -144.0059
    North_Bounding_Coordinate: 63.8560
    South_Bounding_Coordinate: 63.5923

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 08-Aug-2006
    Ending_Date: 03-Aug-2007
    Currentness_Reference: observed

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: tabular digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal degrees.

      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.25722210088.

  7. How does the data set describe geographic features?

    Table1_locations.csv
    Table 1. Location and description of rocks collected for trace-element geochemical analyses in 2007 for the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:63.5923
    Maximum:63.8560
    Units:decimal degree

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-144.8807
    Maximum:-144.0059
    Units:decimal degree

    UTM E
    Easting for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:580118
    Maximum:647711
    Units:meters

    UTM N
    Northing for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:7054609
    Maximum:7082638
    Units:meters

    Description
    Description of analyzed rock sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Brief description of analyzed rock sample based on geologist's field notes and visual inspection of stained slabs when available.

    Table2_geochem.csv
    Table 2. Concentration of trace elements in analyzed rocks collected for geochemical analyses in 2007 for the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological and Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    Au
    Gold values acquired by analysis with fire assay-gravimetric finish (FA-GRAV) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.05
    Maximum:1000

    Ag
    Silver values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.5
    Maximum:100

    Al
    Aluminum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:50

    As
    Arsenic values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:5
    Maximum:10000

    Ba
    Barium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:10
    Maximum:10000

    Be
    Beryllium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.5
    Maximum:1000

    Bi
    Bismuth values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Ca
    Calcium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:50

    Cd
    Cadmium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm) (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.5
    Maximum:1000

    Co
    Cobalt values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm) (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    Cr
    Chromium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    Cu
    Copper values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    Fe
    Iron values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:50

    K
    Potassium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:10

    Mg
    Magnesium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:50

    Mn
    Manganese values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:5
    Maximum:100,000

    Mo
    Molybdenum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    Na
    Sodium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:10

    Ni
    Nickel values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    P
    Phosphorus values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:10
    Maximum:10000

    Pb
    Lead values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    S
    Sulfur values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:10

    Sb
    Antimony values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:5
    Maximum:10000

    Sr
    Strontium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    Ti
    Titanium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:10

    V
    Vanadium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:1
    Maximum:10000

    W
    Tungsten values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:10
    Maximum:10000

    Zn
    Zinc values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Table3a_06locations.csv
    Table 3a. Location and description of rocks collected in 2006 for major-oxide, minor-oxide, and trace-element analyses in the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:63.5923
    Maximum:63.8560
    Units:decimal degree

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-144.8807
    Maximum:-144.0059
    Units:decimal degree

    UTM E
    Easting for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:580118
    Maximum:647711
    Units:meters

    UTM N
    Northing for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:7054609
    Maximum:7082638
    Units:meters

    Description
    Description of analyzed rock sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Brief description of analyzed rock sample based on geologist's field notes and visual inspection of stained slabs when available.

    Table3b_07locations.csv
    Table 3b. Location and description of rocks collected in 2007 for major-oxide, minor-oxide, and trace-element analyses in the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:63.5923
    Maximum:63.8560
    Units:decimal degree

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-144.8807
    Maximum:-144.0059
    Units:decimal degree

    UTM E
    Easting for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:580118
    Maximum:647711
    Units:meters

    UTM N
    Northing for UTM Zone6, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:7054609
    Maximum:7082638
    Units:meters

    Description
    Description of analyzed rock sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Brief description of analyzed rock sample based on geologist's field notes and visual inspection of stained slabs when available.

    Table4a_06data.csv
    Table 4a. Concentration of major oxides, minor oxides, and trace elements in analyzed rocks collected in 2006 for the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    SiO2
    SiO2 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Al2O3
    Al2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Fe2O3
    Fe2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. All iron is expressed as Fe2O3. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    CaO
    CaO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    MgO
    MgO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Na2O
    Na2O values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    K2O
    K2O values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Cr2O3
    Cr2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    TiO2
    TiO2 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    MnO
    MnO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    P2O5
    P2O5 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    SrO
    SrO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    BaO
    BaO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    LOI
    Loss on ignition (LOI) values shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Total
    Calculated total for oxides in sample. Shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:105

    Nb
    Nb values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Rb
    Rb values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Sr
    Sr values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Y
    Y values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Zr
    Zr values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:2
    Maximum:10000

    Table4b_07data.csv
    Table 4b. Concentration of major oxides, minor oxides, and trace elements in analyzed rocks collected in 2007 for the Alaska Highway corridor, Big Delta and Mount Hayes quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Items in the Sample_Number field (Source: Alaska Division of Geological & Geophysical Surveys)

    Items in the Sample_Number field (a unique sample identifier present in Tables 1, 3a and 3b) are based on the following generic example: YYYYQQ_9999-X: YYYY = year sample was collected, GGG = initials of geologist who collected the sample, 999 = station number, assigned numerically for each geologist whether a sample was collected or not, X=unique alpha character designating which sample of many taken at the field station was analyzed.

    SiO2
    SiO2 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Al2O3
    Al2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Fe2O3
    Fe2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. All iron is expressed as Fe2O3. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    CaO
    CaO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    MgO
    MgO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Na2O
    Na2O values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    K2O
    K2O values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Cr2O3
    Cr2O3 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    TiO2
    TiO2 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    MnO
    MnO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    P2O5
    P2O5 values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    SrO
    SrO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    BaO
    BaO values acquired by analysis with lithium metaborate fusion and x-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    LOI
    Loss on ignition (LOI) values shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:100
    Units:%

    Total
    Calculated total for oxides in sample. Shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.01
    Maximum:105

    Nb*
    Nb values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Department of Geology & Geophysics)

    Range of values
    Minimum:1
    Maximum:100,000

    Rb*
    Rb values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Department of Geology & Geophysics)

    Range of values
    Minimum:0.05
    Maximum:100,000

    Sr*
    Sr values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Department of Geology & Geophysics)

    Range of values
    Minimum:0.05
    Maximum:100,000

    Y*
    Y values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Department of Geology & Geophysics)

    Range of values
    Minimum:1
    Maximum:100,000

    Zr*
    Zr values acquired by x-ray fluorescence spectrometry on a pressed pellet (PP-XRF), shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Department of Geology & Geophysics)

    Range of values
    Minimum:1
    Maximum:100,000


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    The data set was funded by the State of Alaska in conjunction with the 2007 STATEMAP geologic mapping project.

  3. To whom should users address questions about the data?


Why was the data set created?

The purpose of the overall project is to provide baseline information about geology, geohazards, and mineral and material resources along the proposed gas pipeline corridor. The data presented in this report are from rock samples collected during bedrock mapping in 2006 and 2007. The geochemical trace-element samples were chosen based on observation of anomalous physical characteristics that suggested possible enrichment in minerals of economic interest, or secondary characteristics associated with economic minerals. The rocks collected for whole-rock analyses were chosen from freshest samples available, to represent characteristic rock types in the map area or as representing rock types whose chemical composition can best characterize tectonic setting.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 2007 (process 1 of 3)
    Field work: We carried out field studies from August 8 to August 15, 2006 and from July 9 to August 3, 2007. In 2006, we collected 10 samples for whole rock (major- and minor-oxides, and petrogenetically important trace-elements) analysis. In 2007, we collected 111 samples for whole rock analysis and 36 rock samples for geochemical trace-element analysis. ADGGS field personnel were Diana N. Solie, Melanie B. Werdon, Rainer J. Newberry, Lawrence K. Freeman, Richard R. Lessard.

    Date: 2007 (process 2 of 3)
    Laboratory work: All trace-element geochemical analyses on rocks collected in 2007 were performed by ALS Chemex. Rock samples were crushed with a Terminator jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passed through a 10 (2 mm) mesh screen. Representative aliquots of 250 grams and 30 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in a chrome steel ring mill so that 85 percent of the sample passed through a 200 (75 micron) mesh screen. Most trace-element analyses were performed on the 250 gram split while gold analyses were performed on the 30 gram representative split. Samples were assayed for gold by gravimetric finish following a fire assay fusion (FA-GRAV). All other trace-element geochemical analyses were performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES) methods following four-acid digestion. The elements that may be affected by incomplete digestion as well as analytical methods, and lower and upper detection limits are noted in Table 5. All whole rock major- and minor-element analyses on samples from 2006 and 2007 were performed by ALS Chemex. Major- and minor-element oxides were determined by X-ray fluorescence spectrometry following a lithium metaborate fusion (LBF-XRF). Analysis of trace elements (Nb, Rb, Sr, Y, and Zr) in 2006 were performed by ALS Chemex, using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets (PP-XRF). Trace element analyses on 2007 rock samples were performed by Dr. Rainer Newberry at the University of Alaska Fairbanks (UAF) Department of Geology and Geophysics. The analyses at UAF were conducted using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets using standard Norrish and Hutton (1969) procedures as described in Potts (1987) and as used by Cameron (2000). Well-calibrated international standards were used as a check of the analyses. The routine was customized for inter-elemental X-ray interferences in rocks of basaltic and felsic compositions. By comparing results on well-characterized rock standards, DGGS found in 2006 that the UAF routines yield more accurate trace element results and in 2007 we chose to perform the Nb, Rb, Sr, Y and Zr analyses using this procedure. Analytical methods and detection limits are tabulated in Table 6.

    Data sources used in this process:

    • Potts (1987), Norrish and Hutton (1969), Cameron (2000)

    Date: Apr-2008 (process 3 of 3)
    Update to text and Table 1: In the text on page 1, in the second paragraph under Analytical Methods, the digestion method for the ICP-AES analyses was changed from aqua regia to four-acid digestion. This change was also made to the Process Description for Laboratory work and Attribute_Accuracy_Report in this metadata. In Table 1, coordinates for samples 07LF543D and 07LF544c had been mistakenly switched and were corrected to the following: 07LF543D Lat (63.6404), Lon (-144.5477), UTM E (621468), UTM N (7059075) and 07LF544C Lat (63.6408), Lon (-144.5461), UTM E (621544), UTM N (7059128). These changes constitute version RDF 2008-2 v. 1.0.1.

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    All trace-element geochemical analyses on rocks collected in 2007 were performed by ALS Chemex. Rock samples were crushed with a Terminator jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passed through a 10 (2 mm) mesh screen. Representative aliquots of 250 grams and 30 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in a chrome steel ring mill so that 85 percent of the sample passed through a 200 (75 micron) mesh screen. Most trace-element analyses were performed on the 250 gram split while gold analyses were performed on the 30 gram representative split. Samples were assayed for gold by gravimetric finish following a fire assay fusion (FA-GRAV). All other trace-element geochemical analyses were performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES) methods following four-acid digestion. The elements that may be affected by incomplete digestion as well as analytical methods, and lower and upper detection limits are noted in Table 5. All whole rock major- and minor-element analyses on samples from 2006 and 2007 were performed by ALS Chemex. Major- and minor-element oxides were determined by X-ray fluorescence spectrometry following a lithium metaborate fusion (LBF-XRF). Analysis of trace elements (Nb, Rb, Sr, Y, and Zr) in 2006 were performed by ALS Chemex, using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets (PP-XRF). Trace element analyses on 2007 rock samples were performed by Dr. Rainer Newberry at the University of Alaska Fairbanks (UAF) Department of Geology and Geophysics. The analyses at UAF were conducted using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets using standard Norrish and Hutton (1969) procedures as described in Potts (1987) and as used by Cameron (2000). Well-calibrated international standards were used as a check of the analyses. The routine was customized for inter-elemental X-ray interferences in rocks of basaltic and felsic compositions. By comparing results on well-characterized rock standards, DGGS found in 2006 that the UAF routines yield more accurate trace element results and in 2007 we chose to perform the Nb, Rb, Sr, Y and Zr analyses using this procedure. Analytical methods and detection limits are tabulated in Table 6.

  2. How accurate are the geographic locations?

    Location data were downloaded from handheld Garmin GPS units (76C and 12XL) into an Access database.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This dataset contains all of the samples selected by DGGS for trace-element geochemical analyses and whole rock major oxide, minor oxide and selected trace element analysis in the Alaska Highway corridor between Delta Junction and Dot Lake during the summers of 2006 and 2007.

  5. How consistent are the relationships among the observations, including topology?

    No topologic relationships are present in the data.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

  1. Who distributes the data set? (Distributor 1 of 1)

    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    3354 College Road
    Fairbanks, Alaska 99709-3707
    USA

    907-451-5020 (voice)
    907-451-5050 (FAX)
    dggspubs@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our Web site (<http://www.dggs.dnr.state.ak.us>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set?

    Raw Data File 2008-2 v. 1.0.1

  3. What legal disclaimers am I supposed to read?

    The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    CSV (Comma Separated Value) files can be imported and formatted with Microsoft Excel, OpenOffice.org Calc, or most spreadsheet programs and can also be viewed with most text editing programs.


Who wrote the metadata?

Dates:
Last modified: 06-May-2008
Last Reviewed: 06-May-2008
To be reviewed: 18-Dec-2010
Metadata author:
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, Alaska 99709-3707
USA

907-451-5020 (voice)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.6 on Tue May 06 14:29:37 2008