Scripps Institution of Oceanography Ferromanganese Nodule Analysis File: README file NGDC Data Set # 0128 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: Jane Frazer and Mary Fisk, Scripps Institution of Oceanography NAME OF DATA SET: SIO Mn Nodule Analysis File LAST UPDATE: 1981 GEOGRAPHIC REGION: Pacific Ocean DATA VOLUME: approximately .64 mbytes MGG IDENTIFIER: MGG15995013 LIST OF FILES mnnod1.txt(station data), mnnod2.txt(transition elements), mnnod3.txt ("extra" element analyses), mnnod4.txt (bibliographic references), README (this file). related files available from NGDC: SIO sediment descriptions files, NOAA & MMS Marine Minerals CD-ROM Data Set. SUMMARY The Scripps Institution of Oceanography compiled data on the geochemistry of marine ferromanganese nodules as part of the International Decade of Ocean Exploration, funded by the National Science Foundation. The files were discontinued in 1981. The SIO files contain data from approximately 1,500 samples collected at 800 locations worldwide. Data were abstracted from the literature, and other sources. The four files include data source, latitude/longitude, sampling device, water depth, nodule type, and weight percentages of selected elements. Files of additional elemental analyses, and bibliographic references are also included. The SIO data are also included in the NGDC marine minerals data base. ORIGINAL REFERENCES Frazer, J.Z., Freelander, N.A., and D.L. Hawkins, 1978, Sediment Data Bank Coding Instructions: Scripps Institution of Oceanography Reference No. 78-9, University of California, 26 p. AVAILABILITY Data are available for free download from NGDC's Web server. NGDC/WDC 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 DOCUMENTATION _________________________________________________________________________ Scripps Institution of Oceanography Manganese Nodule Analysis File compiled by Ms. Jane Frazer and Ms. Mary Fisk ________________________________________________________________________ The World Sediment Data Bank and Manganese Nodule Analysis File, compiled at the Scripps Institution of Oceanography through 1979 represent the largest organized data files available on ferromanganese deposits on the ocean floor. The compilation was partially funded by the U.S. National Science Foundation through the International Decade of Ocean Exploration Program. A copy of the nodule analysis data, and portions of the sediment data were transferred to NGDC for distribution, after compilation stopped at SIO, by Mary Fisk. The SIO nodule data were incorporated into the NGDC Marine Minerals Database, and are offered on the NOAA & MMS Marine Minerals CD-ROM Data Set described elsewhere. The following is a description of the format/field contents for SIO station records, major element analysis records, and "extra" element analysis records in their original format, as transferred to NGDC. Each file is ASCII with fixed-length fields. Column headers are embedded in each file, as received by NGDC from SIO. The nodule analyses are also represented in the NGDC Marine Minerals Database in searchable form on the marine minerals CD-ROM, as well as in dbms and spreadsheet form. For more complete information on methodologies and codes used in the SIO data, please consult the following reference: Frazer, J.Z., Freelander, N.A., and D.L. Hawkins, 1978, Sediment Data Bank Coding Instructions: Scripps Institution of Oceanography Reference No. 78-9, University of California, 26 p. Station Records Associated with Nodule Analysis Records One Station Record was coded for each core, dredge or other sample. If seafloor photographs were taken in conjunction with other sampling, they are not coded as separate stations. If seafloor photographs were taken where no other sampling occurred, they are coded as separate stations. Begin Column Format Item ______ ______ ____ 3 A7 Sequence number 11 A12 Ship/Cruise/Station number 24 F6.3 Latitude 30 A1 N or S 32 F7.3 Longitude 39 A1 E or W 41 A12 Sample Device 55 I5 Water Depth (m) corrected or uncorrected 61 F8.2 Core Length (cm) 70 A4 Institution Code: FSU = Florida State University HIG = Hawaii Institute of Geophysics LDGO = Lamont-Doherty Geological Observatory OSU = Oregon State University USSR = Akademiia Nauk, USSR SIO = Scripps Institution of Oceanography WHOI = Woods Hole Oceanographic Institution 75 A4 Reference - a letter followed by three digits to indicate the data source. Each reference is keyed to an entry in the SIO bibliography file. 87 I6 Sediment Description Record number 94 I6 Nodule Analysis Record number Manganese Nodule Analysis Records Begin Column Format Item ______ ______ ____ 1 A7 Sequence No. 8 A2 Analysis No. 11-54 A43 Text in the following order of occurrence: Abbreviated Sample Type from one of the following: 00 = unknown 01 = Mn nodule or nodules 02 = Mn nodule in sediment 03 = micronodules 04 = micronodules in sediment 05 = nodules and micronodules 06 = Mn-encrusted sediment 07 = Mn-coated rock 08 = Mn crust or pavement 09 = Mn-coated organic material 10 = several crusts Abbreviated Section Type from one of the following: 00 = unknown 01 = whole nodule or crust 02 = half nodule 03 = quarter nodule 04 = fragments or pieces 05 = core or nucleus of nodule 06 = nodule without core 07 = cross-section of nodule 08 = layer adjacent to core of nodule 09 = middle layer of nodule 10 = outer layer or outer crust 11 = inner part, without outer layer 12 = topside of nodule or crust 13 = underside of nodule or crust 14 = bulk composition - total material at surface location 16 = composite 2-5 nodules or micronodules analyzed together 17 = composite 6-12 nodules or micronodules analyzed together 18 = composite of > 12 nodules/micronodules analyzed together Sample dimensions: Largest Dimension Next Largest Dimension Smallest Dimension separated by "X" - may be I2 or I3, not fixed-length Nucleus, abbreviation for one of the following: present but not described/undetermined none apparent tooth earbone pumice chert palagonite clay altered basalt volcanic nodule fragment metallic object sediment, unspecified rock, unspecified 56 A5 Morphology Morphology is divided into primary morphology of the deposit, followed by a "/", then the morphology of the surface of the deposit. Ranges, such as rough to smooth are indicated by giving both codes, the predominant code first. A coded example would be: ED/RS = Ellipsoidal to Discoidal nodule with a Rough to Smooth surface. Primary Morphology Surface Texture S = spheroidal S = smooth E = ellipsoidal R = rough (granular/micro- D = discoidal botryoidal) P = poly (coaspheroidal) B = botryoidal B = biological M = microbotryoidal T = tabular C = cavernous F = faceted X = scoriaceous Y = pyramidal I = irregular 62 A4 SIO Reference 67 A3 Analytical Method - abbreviation for: blank unknown wc wet chemical (colorimetry, volumetry, gravimetry) xf x-ray fluorescence spectrometry xe x-ray energy spectrometry em electron microprobe aa atomic absorption na neutron activation es emission spectrometry other - see reference (use for combination of methods) 71 F5.2 Mn concentration 77 F5.2 Fe concentration 82 F5.2 Co concentration 87 F5.2 Ni concentration 92 F5.2 Cu concentration 97 F6.3 Zn concentration 103 F6.2 Pb concentration 109 F6.2 Al concentration 115 F6.2 Si concentration 121 F6.2 Ca concentration 127 F6.2 H2O concentration Manganese Nodule Analysis "Extra" Records Begin Column Format Item ______ ______ ____ 1 A7 Sequence No. 8 A2 Analysis No. 11 I5 Depth in Core - cm. 10 I3 "Z" number of element corresponding to following weight % measurement 13 F7.4 concentration of element A total of eleven pairs of "Z" number (I3), followed by wt % (F7.4), follow.