15053f05-aed5-4ac1-b4d6-ac1486f8f003_source eng; USA utf8 dataset Lawrence Freeman State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Geologist in the DGGS Minerals Section 907-451-5020 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA dggspubs@alaska.gov 8:00 am to 4:30 pm, Monday through Friday, except State holidays. Please contact us through the e-mail address given above whenever possible. pointOfContact 2008-05-06 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments collected in the northern Fairbanks mining district, Circle quadrangle, Alaska in 2007 2008-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Fairbanks AK, USA publisher Athey, J.E. originator Freeman, L.K. originator Werdon, M.B. originator Szumigala, D.J. originator Lessard, R.L. originator Newberry, R.J. originator Hansen, S.E. originator Jing, Liping originator http://dx.doi.org/10.14509/15901 TABULAR DIGITAL DATA, REPORT Raw Data File RDF 2008-1 v. 1.0.1 41 pp. Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling northeast of Fairbanks in the Circle A-4, A-5, B-4, and B-5 quadrangles, Alaska from May 31 to June 28, 2007. The fieldwork provides basic information critical to building an understanding of Alaska geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2007, 128 rock samples were collected for geochemical trace-element analysis, and 44 rock samples were collected for whole rock (major- and minor-oxide) analysis. Petrogenetically important trace-elements will be analyzed in a subsequent study to be published with the final map and report for this area. In addition, 67 stream sediment samples were collected for geochemical trace-element analysis. The stream sediment geochemical study was conducted over the proposed Mount Ryan Remote Recreational Cabin Staking Area as considered by Alaska's Division of Mining, Land & Water in 2007. The analyses in this report were acquired as part of a geologic mapping program, the purpose of which is to provide 1:50,000-scale geologic mapping of a portion of the Northeast Fairbanks airborne geophysical surveys released by DGGS in 2006 (Burns et al., 2006). 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. 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, Division of Geological & Geophysical Surveys. Partial funding for the geologic mapping and geochemical analyses was also provided through the U.S. Geological Survey STATEMAP Program under award number 07HQAG0076 and the General Fund. completed notPlanned Geochemistry Major Oxides STATEMAP Project Stream Sediments Trace Metals theme None Alaska, State of Chatanika River Circle Quadrangle Crooked Creek Deep Creek Fairbanks North Star Borough Faith Creek Frozenfoot Creek Glacier Pup Harrington Fork Birch Creek Hope Creek Idaho Creek McManus Creek Montana Creek Polar Creek Pool Creek Ruby Creek Ryan, Mount Smith Creek Sourdough Camp Sourdough Creek Steese Highway Tough Luck Creek place None 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. otherRestrictions 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. otherRestrictions 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). Line, grid, and vector data and plot files for the airborne geophysical survey data of northeast Fairbanks area, Fairbanks and Circle mining districts, Interior Alaska 2006-01-01 publication Burns, L.E. originator Fugro Airborne Surveys originator Stevens Exploration Management Corp. originator http://dx.doi.org/10.14509/14522 documentDigital Geophysical Report GPR 2006-3 1 disk crossReference Analytical data for the Steese-White Mountains project 1986-01-01 publication DGGS Staff originator http://dx.doi.org/10.14509/1292 MAP, DOCUMENT Public Data File PDF 86-91 252 p., 6 sheets, scale 1:63,360. crossReference Geochemical trace-element data for stream sediment samples collected in the Circle mining district, 1983 1994-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks publisher Wiltse, M.A. originator Metz, P.A. originator Robinson, M.S. originator Pinney, D.S. originator http://dx.doi.org/10.14509/1655 TABLE (NON-DIGITAL) Public Data File PDF 94-30A 86 p., 1 sheet, scale 1:63,360 crossReference Geochemical trace-element data for rock samples collected in the Circle mining district, June 1993 2007-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks publisher Wiltse, M.A. originator Queen, L.K. originator Pinney, D.S. originator http://dx.doi.org/10.14509/1657 TABLE (NON-DIGITAL) Public Data File PDF 94-31A 33 p., 1 sheet, scale 1:63,360 crossReference Geochemical major-oxide and trace-element data for rock samples collected in the Circle mining district, June 1993 1994-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks publisher Newberry, R.J. originator Wiltse, M.A., originator Queen, L.K. originator Pinney, D.S. originator http://dx.doi.org/10.14509/1658 MAP, DOCUMENT Public Data File PDF 94-32A 94-32A, 7 p., 1 sheet, scale 1:63,360 crossReference vector eng; USA geoscientificInformation Native Dataset Environment: Adobe Acrobat Reader, any spreadsheet program or text editor. Technical Prerequisites: CSV (Comma Separated Value) files can be imported and formatted with Microsoft Excel, OpenOffice.org Calc, or most spreadsheet and text editor programs. -146.4743 -145.982 65.2103 65.409 2007-05-01 2007-06-01 The data are available in tabular format as comma delimited ascii files organized into three layers each comprised of three tables as described in this metadata file under the "Entity_and_Attribute_Information" section. The layers are as follows: >Trace-metal rock geochemistry sample locations and descriptions, geochemical data, analytical methods and detection limits (Tables 1, 2, 7) >Whole-rock major- and minor-oxide geochemistry sample locations and descriptions, geochemical data, analytical methods and detection limits (Tables 3, 4, 8) >Trace-element stream sediment geochemistry sample locations, geochemical data, analytical methods and detection limits (Tables 5, 6, 9) true Entity and Attribute Information Entity and Attribute Overview: RDF 2008-1 has nine entities containing attributes that need to be defined. The entities are grouped in three thematic layers; each layer contains a sample location and description table (Tables 1, 3, and 5), a geochemical analysis data table (Tables 2, 4, and 6), and table describing analytical methods and detection limits (Tables 7, 8, and 9). The values in the "Sample Number" columns in tables 1, 4, and 7 correspond with the "Sample Number" columns in in tables 2, 5, and 8, respectively. Each row in tables 3, 6, an 9 give detection limits and methods for each of the columns in tables 2, 6, and 8 respectively. Entity and Attribute Detail Citation: This report PDF 1.6 CSV unknown State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 907-451-5020 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. distributor Printed publication can be purchased for $5.00 (contact information below) plus shipping if mailed. Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files. Ordering Instructions: Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard. Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid. http://dx.doi.org/10.14509/15901 PDF CSDGM IMPORT ERROR: No digtinfo/formcont information http://dx.doi.org/10.14509/15901 CSV CSDGM IMPORT ERROR: No digtinfo/formcont information dataset Horizontal Positional Accuracy Report Location data were downloaded from Garmin 12XL GPS units into an Access database. Horizontal Positional Accuracy A value of estimated position error in meters was calculated by Garmin 12XL GPS units and recorded for each sample location. Estimated position error calculated by Garmin 12XL units was not better than 3 meters and averaged approximately 6 meters. The GPS system suffers from calculation and geometric error. This error results from items such as error in satellite positions, mathematical error introduced by the formulas used by the GPS unit for calculating position, and errors caused by narrow satellite alignments. Estimated position error is a value determined by the GPS manufacturer for the calculation and geometric error as a whole. 'Selective availability', a deliberate degradation of GPS data managed by the U.S. government, was not operating during the time period these samples were collected. meters 6 This dataset contains all of the analyses for samples collected for trace-element rock geochemistry, whole rock major and minor oxide geochemistry, and trace element stream sediment geochemistry in the northeast Fairbanks project area in the summer of 2007. Whole-rock trace element analyses for rock samples will be determined by the Advanced Instrumentation Laboratory at the University of Alaska Fairbanks (UAF) and will be released at a later date. This dataset contains all of the analyses for samples collected for trace-element rock geochemistry, whole rock major and minor oxide geochemistry, and trace element stream sediment geochemistry in the northeast Fairbanks project area in the summer of 2007. Whole-rock trace element analyses for rock samples will be determined by the Advanced Instrumentation Laboratory at the University of Alaska Fairbanks (UAF) and will be released at a later date. No topologic relationships are present in data. This lineage was generated by the FGDC CSDGM to 19139 transformation Fieldwork - Rock samples of visibly mineralized rock, or rock exhibiting features associated with mineralization, were preferentially collected and analyzed for geochemical trace elements. Spatially these rocks were collected randomly. Unweathered or minimally weathered rock samples were preferentially selected for analysis. 2007-06-01T00:00:00 Fieldwork - Rock samples collected for major-oxide, minor-oxide, and trace elements include samples representative of a typical lithology, igneous or possible meta-igneous samples in order to determine composition, and samples whose petrogenetically important trace-elements could indicate their original tectonic setting. Unweathered or minimally weathered rock samples were preferentially selected for analysis. Spatially these rocks were collected randomly. 2007-01-01T00:00:00 Fieldwork - Stream sediment samples were collected from first-order streams just above the confluence with second-order streams, except for sample 07Z440.1B that was taken from a second-order stream. Silt- and clay-sized (-80 mesh) sediment was preferentially sampled from active stream channels, at or below water level. Samples were collected from gravel and sand bars where possible, and obvious coarse sand, organic-rich material, and loess were avoided. Pebbles and large organic debris was removed from the sample using a � inch sieve. Samples were collected over a 15- to 30-meter stretch of the stream. Sample size was generally half or more of a 7-inch by 11-inch sample bag containing sand-sized or finer material. 2007-06-01T00:00:00 Sample Preparation - Rock samples were crushed with a Terminator oscillating jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passes through a -10 mesh (2 mm) screen. Representative aliquots of 250 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 mesh (75 micron) screen. Trace-element analyses, the whole rock major element analyses and the gold analyses were performed using representative splits of each 250 gram pulp. Sample preparation was conducted at the ALS Chemex sample preparation facility in Fairbanks, Alaska. 2007-01-01T00:00:00 Sample Preparation - Sediment samples were dried and sieved to -80 mesh (2 mm) material by stainless steel screens. Representative aliquots of 250 grams 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 a 0.25 gram split while gold analyses were performed on a 15 gram representative split. Sample preparation was conducted by Alaska Assay Laboratories at Fairbanks, Alaska. 2007-01-01T00:00:00 Analysis - Initially, all rock samples for trace element geochemistry (Table 2) were assayed for gold by inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP). Trace-element geochemical analyses were performed by inductive coupled plasma-atomic emission spectroscopy (ICP-AES) methods after four-acid, near-total digestion. This method of digestion is possibly incomplete for some elements and may result in lower analytical results for these elements. The elements that may be affected by incomplete digestion, analytical methods, and lower and upper reporting limits are tabulated in Table 7. All rock trace metal analyses were performed by ALS Chemex. 2007-01-01T00:00:00 Analysis - All whole rock analyses (Table 4) were performed by ALS Chemex. Major and minor element oxides were determined by X-ray fluorescence spectrometry following a lithium borate fusion (WEI-GRA06). Analytical methods and detection limits are tabulated in Table 8. 2007-01-01T00:00:00 Analysis - Stream sediment samples (Table 6) were assayed for gold by inductively coupled plasma-mass spectrometry (ICP-MS) following Aqua-Regia digestion. Trace element geochemical analyses were performed by ICP-MS methods after four-acid, near-total digestion. Digestion involved heating a 0.25 g split in HNO3-HClO4-HF to fuming and then taking it to dryness. The residue was dissolved in HCl. This method of digestion is possibly incomplete for some elements and may result in lower analytical results for these elements. In addition, some loss of certain elements may result from volatilization during fuming. The elements that may be affected by incomplete digestion and volatilization, analytical methods, and lower and upper detection limits are tabulated in Table 9. Analyses of stream sediment samples where conducted by Acme Labs of Vancouver, B.C. Canada. 2007-01-01T00:00:00 otherRestrictions Metadata Access Constraints: none otherRestrictions Metadata Use Constraints: If the user has modified the data in any way the user is obligated to describe the types of modifications the user has performed in the supporting metadata file. User specifically agrees not to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. unknown 2009-12-18 This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2019-08-12T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. Last Metadata Review Date: 2008-05-06 Lawrence Freeman State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Geologist in the DGGS Minerals Section 907-451-5020 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA dggspubs@alaska.gov 8:00 am to 4:30 pm, Monday through Friday, except State holidays. Please contact us through the e-mail address given above whenever possible. pointOfContact