Major-oxide, minor-oxide, trace-element, geochemical, and non-carbonate carbon data from rocks collected in the Solomon and Nome Quadrangles, Seward Peninsula, Alaska in 2006

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What does this data set describe?

Title:
Major-oxide, minor-oxide, trace-element, geochemical, and non-carbonate carbon data from rocks collected in the Solomon and Nome Quadrangles, Seward Peninsula, Alaska in 2006
Abstract:
The rock samples in this publication were collected in 2006 during geologic field mapping within the Council airborne geophysical survey tract. The analyses were acquired to aid interpretation and development of the geologic map and evaluation of the area's mineral potential. To further geologic understanding of the area, igneous and metamorphic rock samples were selected for whole-rock geochemical analysis. Unweathered or minimally weathered rock samples were preferentially selected for analysis. Non-carbonate carbon analyses were obtained to determine the percentage of graphite in metasedimentary rocks. To help evaluate the area's mineral resource potential, rock samples were selected for geochemical analysis; these rocks were either visibly mineralized, or had features that suggested the potential to be mineralized.
Supplemental_Information:
This publication contains 22 whole-rock (major-oxide, minor-oxide, +/- trace-element), 211 trace geochemical (metals and semi-metals), and 3 non-carbonate carbon analyses for rocks collected by DGGS in 2006 in the Casadepaga River-Bluff area of the Solomon quadrangle. Two additional whole-rock samples were collected in the Nome quadrangle. Attribute information for the following tables (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each table is listed and described in detail under its own heading starting "Entity_Type_Label." Tables include:
Table2    Trace-element geochemical analyses
Table4    Major-oxide, minor-oxide, and trace-element analyses
Table7    Location and description of rocks
  1. How should this data set be cited?

    Werdon, M.B., Newberry, R.J., Szumigala, D.J., Freeman, L.K., and Athey, J.E., 2007, Major-oxide, minor-oxide, trace-element, geochemical, and non-carbonate carbon data from rocks collected in the Solomon and Nome Quadrangles, Seward Peninsula, Alaska in 2006: Raw Data File RDF 2007-4, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 49 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -165.2179
    East_Bounding_Coordinate: -163.6550
    North_Bounding_Coordinate: 64.9263
    South_Bounding_Coordinate: 63.7188

  3. What does it look like?

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

    Beginning_Date: 2003
    Ending_Date: 2007
    Currentness_Reference: 2007 (publication date)

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

    Geospatial_Data_Presentation_Form: tabular digital data, report

  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?

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    RDF 2007-4 has eight entities containing attributes that need to be defined. Four of the tables, those involving sample locations, detection limits, and methods, are described here. The other three are data tables and are described in the "Detailed_Description" below. Items in the Sample_Number field (a unique sample identifier present in Tables 1, 2, 3, 4, and 7) are based on the following generic example: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X=unique alpha character designating a sample was taken at the field station. Geologists' initials represent the following: 'JEA' = Jennifer Athey; 'MBW' = Melanie Werdon; 'RN' = Rainer Newberry; 'LF' = Larry Freeman; 'Z' = David Szumigala. Table 1. Location and description of rocks collected for trace-element geochemical analyses in the Solomon Quadrangle, Seward Peninsula, Alaska.
     Attribute          Definition
     Sample_Number      Unique sample number following rules above.
     Latitude           Latitude for UTM Zone3, NAD 27
     Longitude          Longitude for UTM Zone3, NAD 27
     UTM_E              Easting for UTM Zone3, NAD 27
     UTM_N              Northing for UTM Zone3, NAD 27
     Description        Brief rock description
    
    Table 3. Location and description of rocks collected for major-oxide, minor-oxide, and trace-element analyses in the Solomon and Nome Quadrangles, Seward Peninsula, Alaska.
     Attribute          Definition
     Sample_Number      Unique sample number following rules above.
     Latitude           Latitude for UTM Zone3, NAD 27
     Longitude          Longitude for UTM Zone3, NAD 27
     UTM_E              Easting for UTM Zone3, NAD 27
     UTM_N              Northing for UTM Zone3, NAD 27
     Description        Brief rock description
    
    Table 5. Detection limits for geochemical analyses.
     Attribute          Definition
     Element            Element analyzed. Asterisk (*) on element name denotes possibly incomplete digestion dependent on mineralogy. A plus sign (+) on gold denotes the sample contained greater than 10 parts per million gold and was additionally assayed by the FA-GRAV method. A plus sign (+) on mercury denotes the sample was additionally assayed by the atomic absorption spectroscopy method.
     Units              parts per million (ppm), or percent
     Lower detection limit      Lower detection limit
     Upper detection limit      Upper detection limit
     Analytical Methods
    
    FA-AAS = Fire Assay-Atomic Absorption Spectroscopy FA-GRAV = Fire Assay-Gravimetric Finish ICP-AES = Inductively Coupled Plasma - Atomic Emission Spectroscopy AAS = Atomic Absorption Spectroscopy Table 6. Detection limits for major-oxide, minor-oxide, and trace-element analyses.
     Attribute          Definition
     Element            Element analyzed. Also includes 'Fe2O3' (Total iron as Fe2O3), 'LOI' (Loss on ignition), and 'Total' (calculated total).
     Units              parts per million (ppm), or percent
     Lower detection limit      Lower detection limit
     Upper detection limit      Upper detection limit
     Analytical Methods
    
    LBF-XRF = Lithium Borate Fusion and X-Ray Fluorescence Spectroscopy PP-XRF = X-Ray Fluorescence Spectroscopy on Pressed Pellet
    Entity_and_Attribute_Detail_Citation: none
    Table2.csv
    Trace-element geochemical analyses for rocks collected in the Solomon Quadrangle, Seward Peninsula, Alaska. Elements that were not analyzed for a particular sample are denoted by '-'. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Sample_Number
    Unique sequential sample identifier (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Generic example of unique sample identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X=unique alpha character designating a sample was taken at the field station. Geologists' initials represent the following: 'JEA' = Jen Athey; 'MBW' = Melanie Werdon; 'RN' = Rainer Newberry; 'LF' = Larry Freeman; 'Z' = David Szumigala.

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

    Range of values
    Minimum:0.005
    Maximum:10

    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) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.2
    Maximum:1000

    Al
    Aluminum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and shown in percent. 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:25

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

    Range of values
    Minimum:2
    Maximum:10000

    B
    Boron values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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

    Ba
    Barium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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) and 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) and 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) and shown in percent. 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:25

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

    Range of values
    Minimum:1
    Maximum:10000

    Cu(+)
    Copper values acquired by analysis with atomic absorption spectroscopy (AAS) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.01
    Maximum:40

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

    Range of values
    Minimum:0.01
    Maximum:50

    Ga
    Gallium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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

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

    Range of values
    Minimum:1
    Maximum:10000

    Hg(+)
    Mercury values acquired by analysis with atomic absorption spectroscopy (AAS) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.01
    Maximum:100

    K
    Potassium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and shown in percent. 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

    La
    Lanthanum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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

    Mg
    Magnesium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and shown in percent. 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:25

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

    Range of values
    Minimum:5
    Maximum:50000

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

    Range of values
    Minimum:2
    Maximum:10000

    Sc
    Scandium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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

    Sr
    Strontium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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) and shown in percent. 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

    Tl
    Thallium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and 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

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

    Range of values
    Minimum:10
    Maximum:10000

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

    Range of values
    Minimum:2
    Maximum:10000

    Table4.csv
    Major-oxide, minor-oxide, and trace-element analyses for rocks collected in the Solomon and Nome Quadrangles, Seward Peninsula, Alaska. Elements that were not analyzed for a particular sample are denoted by '-'. (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of unique sample identifier: 20YYAAA9999X, where YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X=unique alpha character designating a sample was taken at the field station

    Al2O3
    Al2O3 values acquired by analysis with lithium borate 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

    BaO
    BaO values acquired by analysis with lithium borate 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

    CaO
    CaO values acquired by analysis with lithium borate 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

    Cr2O3
    Cr2O3 values acquired by analysis with lithium borate 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

    Fe2O3
    Fe2O3 values acquired by analysis with lithium borate 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

    K2O
    K2O values acquired by analysis with lithium borate 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

    MgO
    MgO values acquired by analysis with lithium borate 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

    MnO
    MnO values acquired by analysis with lithium borate 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

    Na2O
    Na2O values acquired by analysis with lithium borate 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

    P2O5
    P2O5 values acquired by analysis with lithium borate 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

    SiO2
    SiO2 values acquired by analysis with lithium borate 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

    SrO
    SrO values acquired by analysis with lithium borate 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

    TiO2
    TiO2 values acquired by analysis with lithium borate 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

    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

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

    Range of values
    Minimum:2
    Maximum:10000

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

    Range of values
    Minimum:2
    Maximum:10000

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

    Range of values
    Minimum:2
    Maximum:10000

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

    Range of values
    Minimum:2
    Maximum:10000

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

    Range of values
    Minimum:2
    Maximum:10000

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

    Range of values
    Minimum:1
    Maximum:100000

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

    Range of values
    Minimum:0.5
    Maximum:100000

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

    Range of values
    Minimum:0.5
    Maximum:100000

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

    Range of values
    Minimum:1
    Maximum:100000

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

    Range of values
    Minimum:1
    Maximum:100000

    Table7.csv
    Location and description of rocks collected for non-carbonate carbon analyses in the Solomon Quadrangle, Seward Peninsula, Alaska. Carbon (non-carbonate) was analyzed by induction furnace pyrolysis following dilute acid digestion. The lower detection limit is 0.01 percent, and the upper detection limit is 50 percent carbon. (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample Number
    Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of unique sample identifier: 20YYAAA9999X, where YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X=unique alpha character designating a sample was taken at the field station

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

    Latitude in degrees for UTM Zone 3, NAD 27

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

    Longitude in degrees for UTM Zone 3, NAD 27

    UTM E
    Easting (Source: Alaska Division of Geological & Geophysical Surveys)

    Easting for UTM Zone 3, NAD 27

    UTM N
    Northing (Source: Alaska Division of Geological & Geophysical Surveys)

    Northing for UTM Zone 3, NAD 27

    Description
    Brief rock description (Source: Alaska Division of Geological & Geophysical Surveys)

    Brief rock description

    Non-carbonate Carbon (percent)
    Non-carbonate carbon values acquired by analysis with Leco induction furnace pyrolysis following dilute acid digestion, and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks.)

    Range of values
    Minimum:0.01
    Maximum:50


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?

    This project is part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding for the geologic mapping and geochemical analyses was also provided through the U.S. Geological Survey STATEMAP Program under award number 06HQAG0024.

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


Why was the data set created?

The analyses in this report were acquired during the second year of a two-year mapping program, the purpose of which is to provide 1:50,000-scale geologic mapping of a portion of the Council airborne geophysical surveys released by DGGS in 2003 (Burns et al., 2003). The geophysical survey (helicopter-based aeromagnetic and electromagnetic data) and geologic mapping are part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program, a special multi-year investment by the State of Alaska to expand Alaska's geologic and mineral resources knowledge base, catalyze future private-sector mineral exploration and development, and guide state planning.


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: 2006 (process 1 of 4)
    Fieldwork - During the summer of 2006 DGGS conducted a 1:50,000-scale geologic field mapping project within parts of the Council airborne geophysical survey tract. As part of this project, 211 rock samples were collected for geochemical trace-element analysis, 24 rock samples were collected for whole rock (major- and minor-oxides, and petrogenetically important trace-elements) analysis, and 3 samples were collected for non-carbonate carbon analyses to determine the graphite content of various lithologies. Unweathered or minimally weathered rock samples were preferentially selected for analysis.

    Date: 2006 (process 2 of 4)
    All trace-element geochemical analyses (Table 2) collected in 2006 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 splits 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. Geochemical samples were analyzed for gold using atomic absorption spectroscopy following a fire assay fusion (FA-AAS). For samples with greater than 10 parts per million gold, these samples were also assayed using fire assay and gravimetric finish (FA-GRAV). For samples with greater than 10,000 parts per million copper, these samples were also assayed using atomic absorption spectroscopy (AAS). Mercury was analyzed by cold-vapor atomic absorption spectroscopy and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) methods following an aqua regia digestion. All other geochemical analyses were performed by the ICP-AES method after aqua regia digestion. This method of digestion is possibly incomplete for some elements and may result in lower analytical results for certain elements. The elements that may be affected by incomplete digestion as well as analytical methods, and lower and upper detection limits are tabulated in Table 5.

    Date: 2006 (process 3 of 4)
    All whole rock analyses (Table 4) were first performed by ALS Chemex. For the whole rock samples, major- and minor-element oxides were determined by X-ray fluorescence spectrometry (XRF) following a lithium tetraborate fusion. All trace elements (Nb, Rb, Sr, Y, Zr) were analyzed by wavelength dispersive X-ray fluorescence on pressed pellets. In order to check assay values reported by laboratories, DGGS inserts well- characterized rock standards throughout our sample order. Upon inspection of the analyses of DGGS whole rock standards, we observed that pressed-pellet XRF values for yttrium (Y) reported by ALS Chemex were too low. Upon our request, ALS Chemex examined their internal standards and stated that the Y values were within their accepted range of standard deviation. To examine this issue further, DGGS submitted the leftover pulps from basalt and gabbro samples to the University of Alaska Fairbanks (UAF) Advanced Instrumentation Laboratory for comparative XRF analyses. XRF analyses at UAF were conducted on pressed pellets using standard Norrish and Hutton (1969) procedures as described in 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 composition. The UAF-derived XRF analyses for Y are significantly (5-25%) higher than those reported by ALS Chemex (both analyses are reported in Table 4). The UAF Y values are more comparable to the independently derived Y XRF analyses of Amato and others (2003) (ran at New Mexico State University) for basalts and gabbros of the same age in the Nome Quadrangle immediately to the west of the Council project area. We conclude that all of the UAF-derived trace-element analyses (Nb, Rb, Sr, Y, and Zr) more closely reflect the true concentration values, and hence recommend the use of the UAF values over those reported by ALS Chemex. Analytical detection limits are tabulated in Table 6.

    Date: 2006 (process 4 of 4)
    All non-carbonate carbon analyses (Table 7) were performed by ALS Chemex. Non-carbonate carbon was determined by Leco induction furnace pyrolysis following a dilute acid digestion. Analytical detection limits are noted in the title for Table 7.

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

    Burns, L.E., Surveys, Fugro Airborne , and Stevens Exploration Management Corporation, 2003, Line, gridded, and vector data of the airborne geophysical survey data for the Council area, Seward Peninsula Alaska: Geophysical Report GPR 2003-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    • None

    Other_Citation_Details: 2 CD-ROMs
    Pritchard, R.A., and Surveys, Fugro Airborne , 2003, Project report of the airborne geophysical survey of the Council area, Seward Peninsula, Alaska: Geophysical Report GPR 2003-3, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Burns, L.E., and Clautice, K.H., 2003, Portfolio of aeromagnetic and resistivity maps of the Council area, Seward Peninsula, Alaska: Geophysical Report GPR 2003-4, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details:
    Sixteen 8.5" x 11" pages, including 5 color or black and white maps; and 1 topographic overlay on acetate. Publication contains lists of geophysical maps associated with this survey.
    Werdon, M.B., Szumigala, D.J., Newberry, R.J., Athey, J.E., and Hicks, S.A., 2005, Major-oxide, minor-oxide, trace-element, geochemical, and non-carbonate carbon data from rocks collected in the Solomon, Bendeleben, and Nome Quadrangles, Seward Peninsula, Alaska in 2003 and 2004.: Raw Data File RDF 2005-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 46 p.
    Werdon, M.B., Stevens, D.S.P., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Explanatory booklet to accompany geologic, bedrock, and surficial maps of the Big Hurrah and Council areas, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 24 p.
    Werdon, M.B., Stevens, D.S.P., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1A, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.
    Werdon, M.B., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Bedrock geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.
    Stevens, D.S.P., 2005, Surficial geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1C, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.
    Newberry, R.J., Werdon, M.B., Stevens, D.S.P., Athey, J.E., and Szumigala, D.J., 2005, Geologic map of the Council area, Solomon D-4 and Bendeleben A-4 Quadrangles, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1D, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.
    Newberry, R.J., Werdon, M.B., Athey, J.E., and Szumigala, D.J., 2005, Bedrock geologic map of the Council area, Solomon D-4 and Bendeleben A-4 Quadrangles, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1E, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.
    Stevens, D.S.P., 2005, Surficial geologic map of the Council area, Solomon D-4 and Bendeleben A-4 Quadrangles, Seward Peninsula, Alaska.: Report of Investigation RI 2005-1F, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, 1:50,000 scale.


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

  1. How well have the observations been checked?

    All geochemical, whole rock, and non-carbonate carbon analyses were performed by ALS Chemex, except for trace elements presented in RDF 2007-4, table 4, which were determined at the Advanced Instrumentation Laboratory at the University of Alaska Fairbanks (UAF). Geochemical samples were analyzed for gold using atomic absorption spectroscopy following a fire assay fusion (FA-AAS). For samples with greater than 10 parts per million gold, these samples were also assayed using fire assay and gravimetric finish (FA-GRAV). Mercury was analyzed by cold-vapor atomic absorption spectroscopy and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) methods following an aqua regia digestion. For samples with greater than 10,000 parts per million copper, these samples were also assayed by atomic absorption spectroscopy. All other geochemical analyses were performed by the ICP-AES method after aqua regia digestion. This method of digestion is possibly incomplete for certain elements and may result in lower analytical results. The elements that may be affected by incomplete digestion, as well as the analytical methods, and upper and lower detection limits for each element, are tabulated in RDF 2007-4, Table 5. For the whole rock samples, major- and minor-element oxides were determined by X-ray fluorescence spectrometry following a lithium borate fusion (LBF-XRF). All trace elements (Nb, Rb, Sr, Y, Zr) were determined by wavelength dispersive X-ray fluorescence on pressed pellets, first by ALS Chemex, and then by UAF. Analytical methods, and detection limits for each element for the whole rock analyses are tabulated in RDF 2007-4, Table 6. All upper and lower detection limits listed are those reported by ALS Chemex or UAF. For the non-carbonate carbon samples, concentration values were determined by Leco induction furnace pyrolysis following a dilute acid digestion. Analytical methods, and detection limits for each element for the non-carbonate carbon analyses are tabulated in RDF 2007-4, Table 7. Upper and lower detection limits listed are those reported by ALS Chemex.

  2. How accurate are the geographic locations?

    Location data were downloaded from Garmin 12XL GPS units 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 analyses for samples collected for trace-element geochemistry, whole rock, and non-carbonate carbon analyses in the Solomon and Nome quadrangles during the summer of 2006.

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

    No topologic relationships are present in 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, AK 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 2007-4

  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 and text editor programs.


Who wrote the metadata?

Dates:
Last modified: 06-May-2008
Last Reviewed: 06-May-2008
To be reviewed: 18-Oct-2009
Metadata author:
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
c/o Melanie Werdon
Geologist in the DGGS Minerals Section
3354 College Road
Fairbanks, AK 99709-3707
USA

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

Hours_of_Service:
8:00 am to 4:30 pm, Monday through Friday, except State holidays.
Contact_Instructions:
Please contact us through the e-mail address given above whenever possible.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


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