OSU Geochemistry Trace Chemical Analysis data: README file NGDC Data Set # 1080 obtained from: U.S. Department of Commerce National Environmental Satellite, Data, and Information Service National Oceanic and Atmospheric Administration U.S. National Geophysical Data Center (NGDC) (http://www.ngdc.noaa.gov/mgg/mggd.html) & collocated World Data Center for Marine Geology & Geophysics (http://www.ngdc.noaa.gov/mgg/wdcmgg) _______________________________________________________________________ NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THESE DATA _______________________________________________________________________ CONTRIBUTOR: Sean Shanahan OSU Data Librarian NAME OF DATA SET: OSU Geochemistry Data LAST REVISED: October, 1980 GEOGRAPHIC REGION: Global MGG IDENTIFIER : MGG07995002 LIST OF FILES SUMMARY The CEMTRC Oregon State University Trace Chemical Analysis Data File contains the following fields: sample type code, sample i.d., latitude and longitude, depth of sample in meters from sea floor, element name, subsample type, method of analysis, concentration of element, and variance (ppm). We have experienced problems reading this tape, even after receiving a second copy from the source. The data are currently unusable and unavailable. Data were originally sent to NGDC 17 October, 1979 as one magnetic tape, CDC, NOS internal format with EBCDIC labeling (tape label volume serial number CEMTRC), files unlabelled, 1600 bpi. The tape was unreadable, a new version was sent 20 October 1980 as 1600 bpi, "long block" stranger format in EBCDIC. The new tape was also unreadable & OSU was unable to produce a readable version. See description of data file contents below. NGDC/WDC for MGG Technical Contact: Carla Moore NOAA/NGDC E/GC3 325 Broadway Boulder, CO 80305 USA phone: 303-497-6339 fax: 303-497-6513 email: Carla.J.Moore@noaa.gov OSU DOCUMENTATION The following material identifies the important information output by the program PFILEB accompanying the CEMTRC data file. Within the output listing are two types of records. First is the header records. These records identify the sample, locate it, give the sample depth in meters, and tell how many data records are in the sample. Second is the data records. These records are grouped after the header. A data record describes the element, how it was tested, its concentration, in ppm, and variance of the calculated concentration value. Header Record Example: PC MS 632 RC11-229 5-10 -8.3500 - 111.5167 3267 16 -- -------- ------------------ ---- -- 1 2 3 4 5 1. Sample type code MS (see attachment "Sample Typing Code") 2. Sample I.D. 3. Latitude and Longitude 4. Depth of Sample in Meters 5. Number of data records following Data Record Example: 028AAAAASU 37.4075 2.1741 A ---------- ------- ------ 1 2 3 4 5 1. Code for Element (see attachment "ELEM Codes") 2. Subsample (see attachment "Subsample Typing Code") 3. Method (see attachment "Process Methods") 4. Concentration (ppm) 5. Variance (ppm) ELEM CODES ELEMENTS CODES CODES ADDITIONAL INFORMATION NA 011 111 CaCO3 MG 012 113 Water loss AL 013 114 Salt SI 014 115 Depth in Core K 019 116 Correction Factor CA 020 SC 021 CR 024 MN 025 FE 026 CO 027 NI 028 CU 029 ZN 030 AS 033 BR 035 SB 051 BA 056 LA 057 CE 058 ND 060 SM 062 EU 063 TB 065 YB 070 LU 071 HF 072 TH 090 U 092 PROCESS METHODS NAAU - Neutron Activation AASU - Atomic Absorption CCAA - CaCO3 from atomic absorption (Associated with ELEM 111) CCBO - CaCO3 from bomb method (Associated with ELEM 111) CCPV - CaCO3 calculated and preferred (Associated with ELEM 111) WLAA - Water loss (Associated with ELEM 113) SACC - Salt (Associated with ELEM 114) CODP - Depth in Core (Associated with ELEM 115) CFAA - Correction Factor (Associated with ELEM 116) SUBSAMPLE TYPING CODE Subsamples are designated by a three letter code. The first letter designates size separations; the second, phase separations; and the third, chemical separations. The code is as follows: COLUMN 1 2 3 A Total Sample A Bulk A Untreated B < 2 microns B Crushed B Water Washed C 2-20 microns C Acid Glass C Atomic Oxygen (ashing) D 20-63 D Amphibole D HF washed E > 63 E Mica E Acetic Acid Washed F 10-63 F Feldspar F Acetic Acid and Ashed G 5-10 G Groundmass G Ashed and Water Washed H 2-5 H Pyroxene H Dehydrated (Water analyser) I 20-30 mesh I Magnetite I Heavy Liquid Float J 20-50 mesh J Ground < 177 micron Bulk J Heavy Liquid Sink K 30-50 mesh K Olivine K Mag. Separate L > 44 micron L Leachable L Oxalic acid leachate M 30-100 mesh M Spinel (other than mag) M 0.1 HCl leached residue N 37-44 microns N MS-Phase separate N 0.1 N HCl leachate O > 100 microns O Epidote O 2N HCl leachate P 50-100 mesh P Chlorite P leached more than once with Q > 37 microns Q Micronodules am. OX and/or 0.1 HCl again R 50-400 mesh R Residual Q Chester-Hughes leachate S < 37 microns S Saponite R Oxalic acid leached(residu) T 100-200 mesh T Basaltic Glass S 2N NCl leached residue U > 20 mesh U T Leached more than once am. V < 20 mesh V ox. and/or .1N HCl (res) W > 10 mesh W U Leachate more than once X < 10 mesh X Chester-Hughes Y < 4 microns Y V Leached Chester-Hughes Z 4-20 microns Z Unclassified (residue) ? < 44 microns W HxO2 washed ? 44-20 microns X ! > 30 mesh Y 1 44-100 microns Z 2 < 50 mesh 3 50-62 microns 4 10-30 mesh SAMPLE TYPING CODE Sample types are designated by the first two letters of the Geochemistry Accession number under the following code. MS Metalliferous Sediment (Nazca Plate Project) MN Manganese Nodule MP MANOP NP North Pacific Sediments NR North Pacific Rivers ND North Pacific Soils NA Atlantic Sediments EP Equatorial Pacific Sediment CC Continental Rock, Corliss CD Continental Rock, Dymond OA Atlantic Ocean Rock OP Pacific Ocean Rock OI Indian Ocean Rock IA Atlantic Island Rocks IE Easter Island Rocks IT Tahiti Rocks IG Galapagos Island Rocks IM Moorea Island Rocks IH Hawaiian Island Rocks IP Other Pacific Island Rocks AP Pacific Ocean Ash Layer AA Atantic Ocean Ash Layer AI Indian Ocean Ash Layer AC Continental Ash SU USGS Standard Rock SB Bureau of Standards Rock SD Dymond Standard Rock SR Radiation Center Standard Rock HN Heath N. Pac. Sediment BH Blanco Hole PS Antarctic Sediments SS Solomon Island GS Galapagos Rift Sediment DS Duncan - Siletz LS Lake Sediments GB Galapagos Biological BW Galapagos Water CR Coast Range, Duncan SB Santa Barbara Basin Trap SG Santorini Geological SW Santorini Water MA Madagascar - Alkaline RX CA Comores - Alkaline RX