Metadata: Identification_Information: Citation: Citation_Information: Originator: John F. Slack Originator: Jeanine M. Schmidt Originator: Julie A. Dumoulin Publication_Date: 2004 Title: Whole Rock Geochemical Data For Paleozoic Sedimentary Rocks of the western Brooks Brooks Range, Alaska Geospatial_Data_Presentation_Form: table Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2004-1371 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1371/ Description: Abstract: This report presents geochemical analyses for 210 unaltered and unmineralized rock samples of Paleozoic age in the western Brooks Range of northern Alaska. These data form the basis for a study by Slack and others (2004a) on the provenance and depositional history of the Paleozoic strata, and on their metallogenic significance relative to the formation of large stratabound Zn- Pb-Ag deposits in the Red Dog mining district. Principal rock types that were analyzed include shale, siltstone, sandstone, chert, bedded siliceous rock, and calcareous radiolarite; selected samples of limestone, phosphate, and argillite, and one siderite concretion, were also analyzed. Note that the phosphate samples are from the central Brooks Range, east of the Red Dog district. The geochemical analyses are presented here in Microsoft Excel and .dbf spreadsheet formats in order to facilitate calculations and plotting of data. A related geochemical database on altered and mineralized rocks in the Red Dog Zn-Pb-Ag district is available in Slack and others (2004b). Purpose: These data form the basis for a study by Slack et al. (2004a) on the provenance and depositional history of the Paleozoic strata, and on their metallogenic significance relative to the formation of large stratabound Zn-Pb-Ag deposits in the Red Dog mining district. Supplemental_Information: Data for elements, oxides, and other components are presented either in weight percent or parts per million, except for Au and Pd that are in parts per billion. Qualified values (shown by the '<' symbol) represent values less than the specified minimum detection limit (MDL). In some cases, the MDL for a particular element or component is not uniform, which reflects changing analytical conditions or matrix effects, or use of newer ICP-MS instruments that have higher precision and lower MDLs. For statistical treatment of data and other calculations, it is recommended that qualified values be substituted by one-half the analytical detection limit (Sanford and others, 1993). Note that the abbreviation "n.a." refers to a lack of analysis for the specified element or component. Values for the magnitude of the Ce and Eu anomalies are also presented. The magnitude of the Ce anomaly, Ce/Ce*, is calculated as: Ce[CN]/((La[CN])**0.667 * (Nd[CN])**0.333) where Ce[CN], La[CN], and Nd[CN] represent normalization of Ce, La, and Nd respectively to average chondrites using the data of Nakamura (1974). The magnitude of the Eu anomaly, Eu/Eu*, is calculated as: Eu[CN]/(Sm[CN]*Gd[CN])**0.5 with chondrite normalization of Eu, Sm, and Gd represented respectively as Eu[CN], Sm[CN], and Gd[CN]. For those samples without ICP-MS analyses for Gd, the Eu/Eu* values were calculated by a curve-fitting Excel macro program using INAA data for La, Ce, Nd, Sm, Eu, Tb, Yb, and Lu. In these formulae, two asterisks (**) are used to represent exponentiation; one alone indicates multiplication. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -163.899950 East_Bounding_Coordinate: -151.864400 North_Bounding_Coordinate: 68.634480 South_Bounding_Coordinate: 63.381070 Keywords: Theme: Theme_Keyword_Thesaurus: Gateway to the Earth version 1.0 Theme_Keyword: geochemistry Theme_Keyword: rocks and deposits Theme_Keyword: mass spectroscopy Theme_Keyword: neutron activation analysis Theme_Keyword: atomic absorption analysis Theme_Keyword: chemical analysis Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: 02188 = Northwest Arctic Stratum: Stratum_Keyword_Thesaurus: none Stratum_Keyword: Kuna Formation Stratum_Keyword: Lower Siksikpuk Formation Stratum_Keyword: Noatak Sandstone Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: John F Slack Contact_Organization: USGS ER GD Contact_Address: Address_Type: mailing address Address: Mail Stop 954 USGS National Center 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6337 Contact_Facsimile_Telephone: 703-648-6383 Contact_Electronic_Mail_Address: jfslack@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2004/1372/reddog.png Browse_Graphic_File_Description: Index map showing general location of the study area, 790x570 pixels, 53k bytes Browse_Graphic_File_Type: PNG Data_Set_Credit: I.L. Tailleur and J.M. Kurtak donated phosphorite samples for analysis. Native_Data_Set_Environment: Microsoft Excel Cross_Reference: Citation_Information: Originator: John F. Slack Originator: Karen D. Kelley Originator: Jeffrey L. Clark Publication_Date: 2004 Title: Whole rock geochemical data for altered and mineralized rocks, Red Dog Zn-Pb-Ag district, western Brooks Range, Alaska Geospatial_Data_Presentation_Form: table Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2004-1372 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1372/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Precision and accuracy for concentrations 100x the minimum detection limit (MDL) was generally better than ±5 % relative, and in many cases such as for major elements was better than ±1 % relative. For concentrations approximately 10x the MDL, precision and accuracy were about ±10-20 % relative depending on the method used. Logical_Consistency_Report: Multiple standards were analyzed together with the submitted rock samples. Analyses by ACT Labs included data on 8 to 10 compositionally different standards with well-defined elemental concentrations. In addition to these standards, analyses were routinely obtained on duplicate samples and Ohio black shale SDO-1 (http://minerals.cr.usgs.gov/geochem/ohioshale.html). Completeness_Report: Data are available for most elements in most samples. The code "n.a." is used to indicate an unavailable analysis; it occurs in only 21 fields: >Database >field Percent Chemical >label # missing missing species >----------------------------------------- >LOI 65 30% (loss on ignition) >F 50 23% F >TOTAL_C 3 1% (total carbon) >CO2 31 14% (carbon dioxide) >CORG 31 14% (organic carbon) >S 30 14% S >SO4 63 30% (sulfate) >PR 66 31% Pr >GD 66 31% Gd >DY 66 31% Dy >HO 66 31% Ho >ER 66 31% Er >TM 66 31% Tm >CD 110 52% Cd >AU 23 10% Au >GE 65 30% Ge >TL 66 31% Tl >SE 23 10% Se >W 66 31% W >LI 103 49% Li >PD 121 57% Pd Lineage: Process_Step: Process_Description: Geochemical analyses were obtained mostly on samples from natural outcrops; some samples are of diamond drill core 3.5 or 4.5 cm in diameter. Samples were cut using water-cooled diamond saws in order to remove oxidized and(or) weathered surfaces. A small number of samples contain veins composed of quartz with or without associated carbonate and sulfides; these veins were also cut out before analysis. All samples were pulverized in an alumina ceramic mortar, which in some cases may have produced very minor contamination by trace amounts of Al, Ba, and(or) rare earth elements (REE). Prior to analysis all samples were fused with lithium metaborate/ tetraborate to insure nearly complete acid digestion of resistate minerals such as zircon, monazite, rutile, chromite, and barite. Most samples were analyzed by Activation Laboratories (ACT Labs) in Ancaster, Ontario, using methods described on their web site: www. actlabs.com. Major elements, most trace elements, and REE were determined by inductively-coupled plasma mass spectrometry (ICP-MS), using an approach similar to that of Jenner and others (1990). REE in some barite samples were analyzed by high-resolution, magnetic sector ICP-MS using an ion exchange technique in order to eliminate Ba interference on Eu. Volatiles and related components (total C, CO2, Corg, S, SO4) were determined using conventional methods as described in Jackson and others (1987). Fluorine was analyzed by the ion selective electrode technique (Jackson and others, 1987). Data for Sc, Cr, Co, Au, Sb, As, and Se in most samples were obtained by instrumental neutron activation analysis (INAA) (Hoffman, 1992), which provides more precise results than by ICP-MS. Au concentrations in most samples of semimassive and massive sulfide were also obtained by flame atomic absorption (Aruscavage and Crock, 1987) by XRAL Laboratories of Denver, CO, using on splits of the same rock powders that were earlier run for major and trace elements, and REE. A smaller group of samples was analyzed by the U.S. Geological Survey in laboratories at Denver, Colorado, Reston, Virginia, and Menlo Park, California. Major elements were determined by X-ray fluorescence using the methods of Taggart and others ( 1987). Concentrations of volatiles and fluorine were determined by the same procedures as outlined above, except that separate determinations of organic carbon were not made. Where data for CO2 are available, organic carbon contents were calculated by percent difference using results for total carbon. Minor elements were analyzed by inductively coupled plasma-atomic emission spectometry (Lichte and others, 1987), except for Rb, Cs, Ba, Zr, Hf, Ta, Th, U, Sc, Cr, Co, Ni, Mo, Zn, Au, Sb, and As and REE (La, Ce, Nd, Sm, Eu, Tb, Yb, Lu) that were determined by INAA (Baedecker and McKown, 1987). Process_Date: 2004 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 210 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: Longitude_Resolution: Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: brooks.dbf Entity_Type_Definition: Samples for which geochemical analyses have been conducted Attribute: Attribute_Label: SAMPLE_NO Attribute_Definition: Sample number Attribute_Domain_Values: Unrepresentable_Domain: Textual identifier without further scientific significance Attribute: Attribute_Label: STRATIGRAP Attribute_Definition: Stratigraphic unit sampled Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Hunt Fork Shale Enumerated_Domain: Enumerated_Domain_Value: Kanayut Conglomerate Enumerated_Domain: Enumerated_Domain_Value: Kayak Shale Enumerated_Domain: Enumerated_Domain_Value: Kuna Formation Enumerated_Domain: Enumerated_Domain_Value: Kuna Formation (Kivalina unit) Enumerated_Domain: Enumerated_Domain_Value: Lisburne Group (drowned shelf facies) Enumerated_Domain: Enumerated_Domain_Value: Lisburne Group (shelf facies) Enumerated_Domain: Enumerated_Domain_Value: Lisburne Group (Zebra Creek facies) Enumerated_Domain: Enumerated_Domain_Value: Noatak Sandstone Enumerated_Domain: Enumerated_Domain_Value: Siksikpuk Formation Attribute: Attribute_Label: SAMPLE_DES Attribute_Definition: Description of the sample Attribute_Domain_Values: Unrepresentable_Domain: Plain descriptive text Attribute: Attribute_Label: SAMPLE_TYP Attribute_Definition: Type of sampled material Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Drill core Enumerated_Domain: Enumerated_Domain_Value: Outcrop Attribute: Attribute_Label: LATITUDE Attribute_Definition: Latitude in decimal degrees Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 63.38107 Range_Domain_Maximum: 68.63448 Attribute: Attribute_Label: LONGITUDE Attribute_Definition: Longitude in decimal degrees Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -163.89995 Range_Domain_Maximum: -151.8644 Attribute: Attribute_Label: ANALYTICAL Attribute_Definition: Name of the organization whose laboratory provided the analysis Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Activation Laboratories Enumerated_Domain_Value_Definition: Enumerated_Domain: Enumerated_Domain_Value: U.S. Geological Survey Enumerated_Domain_Value_Definition: Attribute: Attribute_Label: SIO2 Attribute_Definition: Silica as SiO2 in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.42 Range_Domain_Maximum: 97.63 Attribute: Attribute_Label: TIO2 Attribute_Definition: Titanium Oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.009 Range_Domain_Maximum: 1.18 Attribute: Attribute_Label: AL2O3 Attribute_Definition: Aluminum oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.16 Range_Domain_Maximum: 23.6 Attribute: Attribute_Label: FE2O3 Attribute_Definition: Iron oxide in percent by weight (total iron reported as Fe2O3) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.07 Range_Domain_Maximum: 45.8 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: MNO Attribute_Definition: Manganese oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1.016 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: MGO Attribute_Definition: Magnesium oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 15.11 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: CAO Attribute_Definition: Calcium oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 51.09 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: NA2O Attribute_Definition: Sodium oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 1.97 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: K2O Attribute_Definition: Potassium oxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 4.28 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: P2O5 Attribute_Definition: Phosphate as P2O5 in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 30.91 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: LOI Attribute_Definition: Loss on ignition in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 39.04 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: TOTAL Attribute_Definition: Total of major element analysis, including LOI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 57.06 Range_Domain_Maximum: 99.77 Attribute_Units_of_Measure: percent by weight Attribute: Attribute_Label: F Attribute_Definition: Fluorine (F) in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.005 Range_Domain_Maximum: 6.43 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: TOTAL_C Attribute_Definition: Total carbon in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 23.2 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: CO2 Attribute_Definition: Carbon dioxide in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 38 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: CORG Attribute_Definition: Organic carbon in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 22.38 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: S Attribute_Definition: Sulfur (S) in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 4.06 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: SO4 Attribute_Definition: Sulfate (SO4) in percent by weight Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.05 Range_Domain_Maximum: 4.55 Attribute_Units_of_Measure: percent by weight Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: RB Attribute_Definition: Rubidium (Rb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 256 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CS Attribute_Definition: Cesium (Cs) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 53.6 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: SR Attribute_Definition: Strontium (Sr) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9 Range_Domain_Maximum: 1900 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: BA Attribute_Definition: Barium (Ba) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39 Range_Domain_Maximum: 39500 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Y Attribute_Definition: Yttrium (Y) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.5 Range_Domain_Maximum: 339.8 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: LA Attribute_Definition: Lanthanum (La) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.61 Range_Domain_Maximum: 170.09 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CE Attribute_Definition: Cerium (Ce) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.46 Range_Domain_Maximum: 165 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: PR Attribute_Definition: Praseodymium (Pr) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.38 Range_Domain_Maximum: 30.79 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: ND Attribute_Definition: Neodymium (Nd) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.47 Range_Domain_Maximum: 133.15 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: SM Attribute_Definition: Samarium (Sm) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.25 Range_Domain_Maximum: 39.9 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: EU Attribute_Definition: Europium (Eu) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.028 Range_Domain_Maximum: 9.78 Attribute_Units_of_Measure: ppm (parts per million by weight) Enumerated_Domain: Enumerated_Domain_Value: n.a. Attribute: Attribute_Label: GD Attribute_Definition: Gadolinium (Gd) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.24 Range_Domain_Maximum: 30.01 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: TB Attribute_Definition: Terbium (Tb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 5.98 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: DY Attribute_Definition: Dysprosium (Dy) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.22 Range_Domain_Maximum: 31.58 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: HO Attribute_Definition: Holmium (Ho) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.05 Range_Domain_Maximum: 6.81 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: ER Attribute_Definition: Erbium (Er) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.18 Range_Domain_Maximum: 23.74 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: TM Attribute_Definition: Thulium (Tm) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 4.118 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: YB Attribute_Definition: Ytterbium (Yb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.13 Range_Domain_Maximum: 25 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: LU Attribute_Definition: Lutetium (Lu) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 4.222 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CE_CE Attribute_Definition: Cerium anomaly (dimensionless). The magnitude of the Ce anomaly, Ce/Ce*, is calculated as: Ce[CN]/((La[CN])**0.667 * (Nd[CN])**0.333) where Ce[CN], La[CN], and Nd[CN] represent normalization of Ce, La, and Nd respectively to average chondrites using the data of Nakamura (1974). Here two asterisks (**) are used to represent exponentiation; one alone indicates multiplication. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0877 Range_Domain_Maximum: 1.3357 Attribute_Units_of_Measure: (ratio, no units) Attribute: Attribute_Label: EU_EU Attribute_Definition: Europium anomaly (dimensionless). The magnitude of the Eu anomaly, Eu/Eu*, is calculated as: Eu[CN]/(Sm[CN]*Gd[CN])**0.5 with chondrite normalization of Eu, Sm, and Gd represented respectively as Eu[CN], Sm[CN], and Gd[CN]. Here two asterisks (**) are used to represent exponentiation; one alone indicates multiplication. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2138 Range_Domain_Maximum: 0.9055 Attribute_Units_of_Measure: (ratio, no units) Attribute: Attribute_Label: ZR Attribute_Definition: Zirconium (Zr) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5 Range_Domain_Maximum: 621 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: HF Attribute_Definition: Hafnium (Hf) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 14.8 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: NB Attribute_Definition: Niobium (Nb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 20.5 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: TA Attribute_Definition: Tantalum (Ta) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 1.9 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: TH Attribute_Definition: Thorium (Th) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.22 Range_Domain_Maximum: 21.78 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: U Attribute_Definition: Uranium (U) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.58 Range_Domain_Maximum: 162.12 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: V Attribute_Definition: Vanadium (V) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15 Range_Domain_Maximum: 1720 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: SC Attribute_Definition: Scandium (Sc) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 27.1 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CR Attribute_Definition: Chromium (Cr) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8 Range_Domain_Maximum: 1690 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CO Attribute_Definition: Cobalt (Co) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 49 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: NI Attribute_Definition: Nickel (Ni) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8 Range_Domain_Maximum: 621 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: MO Attribute_Definition: Molybdenum (Mo) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 88 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CU Attribute_Definition: Copper (Cu) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 590 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: ZN Attribute_Definition: Zinc (Zn) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4 Range_Domain_Maximum: 1300 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: CD Attribute_Definition: Cadmium (Cd) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: PB Attribute_Definition: Lead (Pb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 180 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: AG Attribute_Definition: Silver (Ag) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 32.1 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: AU Attribute_Definition: Gold (Au) in ppb (parts per billion by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 34 Attribute_Units_of_Measure: ppb (parts per billion by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: GA Attribute_Definition: Gallium (Ga) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 33 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: GE Attribute_Definition: Germanium (Ge) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 4.99 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: TL Attribute_Definition: Thallium (Tl) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 1.84 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: SB Attribute_Definition: Antimony (Sb) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 19 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: AS Attribute_Definition: Arsenic (As) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 68.2 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: BI Attribute_Definition: Bismuth (Bi) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.08 Range_Domain_Maximum: 3.4 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: SE Attribute_Definition: Selenium (Se) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 44 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: SN Attribute_Definition: Tin (Sn) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 7 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: W Attribute_Definition: Tungsten (W) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 16.1 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: BE Attribute_Definition: Beryllium (Be) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute: Attribute_Label: LI Attribute_Definition: Lithium (Li) in ppm (parts per million by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 200 Attribute_Units_of_Measure: ppm (parts per million by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Attribute: Attribute_Label: PD Attribute_Definition: Palladium (Pd) in ppb (parts per billion by weight) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 36 Attribute_Units_of_Measure: ppb (parts per billion by weight) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: n.a. Enumerated_Domain_Value_Definition: no analytic result available Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 303-202-4693 Contact_Electronic_Mail_Address: ask@usgs.gov Resource_Description: USGS Open-File Report 2004-1371 Distribution_Liability: Although all data published in these grids have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: 1.0 Format_Information_Content: Sample point locations and geochemical analyses File_Decompression_Technique: unzip Transfer_Size: 34 kilobytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2004/1371/gisdata.zip Digital_Form: Digital_Transfer_Information: Format_Name: Microsoft Excel Format_Version_Number: 97 Format_Information_Content: Sample point locations and geochemical analyses File_Decompression_Technique: none Transfer_Size: 185 kilobytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2004/1371/brooks.xls Fees: none Metadata_Reference_Information: Metadata_Date: 20041021 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N. Schweitzer Contact_Address: Address_Type: mailing address Address: Mail Stop 954 National Center U.S. Geological Survey 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: (703) 648-6533 Contact_Facsimile_Telephone: (703) 648-6560 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998