AN EXAMPLE FOR THE MULTIVARIATE GEOSTATISTICAL ANALYSES OF GEOCHEMICAL DATA: IRON MINES OF DİVRİĞİ AREA, CENTRAL TURKEY

Yıl 1989, Cilt: 109 Sayı: 109, 74 - 74, 01.02.1989

Taner Ünlü , Henrik Stendal

Öz

Geostatistical analyses were carried out on 160 rock samples for 24 elements from the Divriği iron ore region. The
samples were initially treated as one population. Thereafter the individual rock types were divided into several groups and geostatistically
analysed. The geostatistical methods are described shortly for univarite and bivariate analyses and, most importantly, the
multivariate methods such as Discriminant, Cluster and Factor analyses. The results of the geostatistical analyses yield a division
into different rock groups (Discriminant analysis), and several elementassociation (Cluster and Factor analyses) which reflect the
different rock types. In the individual groups the elementassociation tells more about the geological processes e.g. serpentinization
and hydrothermal alteration. The difference between Cluster and Factor analyses is seen in the Factor analysis, which is a little
more differentiated, enabling a more subtle interpretation of the possible geological environment. The interpretation of the elementassociation
suggests that the iron ores are closely associated with mafic to ultramafic rocks, their serpentinization and also
later hydrothermal events.

Anahtar Kelimeler

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Kaynakça

• Allen, A. (ed.), 1982, SAS User's Guide: Basics, 1982 Edition. Cary NC: SAS Institute Inc., 1982, 923 s.
• 1985, SAS User's Guide: Statistics, Version 5. Cary NC: SAS Institute Inc., 1985, 956 s.
• Bayhan, H., 1980, Güneş-Soğucak (Divriği/Sivas) Yöresinin Jeolojik, Mineralojik, Petrografik-petrolojik ve Metalojenik İncelenmesi: Doktora çalışması (İngilizce özet), HÜ, 188 s., Ankara.
• Bell III, H., 1976, Geochemical reconnaissance using heavy minerals from small streams in central South Carolinn: US Geol. Survey Bull., 1404, 23 s.
• Boom, G. van den, 1981, Auswertung geochemischer Prospektionsergebnisse: ed. Bender, F., 1981, Angevvandte Geovvissenschaften Band l, 347—358, Ferdinand Enke Verlag, Stuttgart.
• Clausen, F.L. ve Harpoth, O., 1983, On the use of discriminant analysis techniques for classifying chemical data from panned heavy—mineral concentrates—central East Greenland: J. Geochem. Explor., 18, 1-24.
• Conradsen, K.; Knudsen, J.G.; Larsen,M. ve Schönwandt,H.K., 1976, Multivariate Statistical methods as a tool in the interpretation of heavy mineral data. A case study on Statistical pattern recognition of earth data: 14 th International Symposium on the Application of Computer Methods in the Mineral Industries: Pennsylvania State University, s. 1—12.
• Davis, J.C., 1973, Statistics and data analysis in geology: Wiley, Nevv York,N.Y., 550 s.
• Garrett, R.G. ve Nichol, I., 1969, Factor analysis in the interpretation of regional geochemical stream Sediment data: O. Colo. School Mines, 64, 245-264. Hesp. W.R. ve Rigby, D., 1973, Cluster analysis of rocks in the Nevv England igneous complex, Nevv South VVales. Australia: ed. MJ. Jones, 1972, Geochemical Exploration, The Instn Min. Metali., 221-235.
• Hovvarth, R.J. ve Sinding—Larsen, R., 1983, Multivariate analysis: ed. Govett, G.J.S., Handbook of Exploration Geochemistry, vol. 2 (ed. Hovvarth, RJ.), 1983, Statistics and data analysis in geochemical Prospecting, 207-289, Elsevier, Amsterdam.
• Klemm, D.D., 1960, Die Eisenerzvorkommen von Divrik (Anatolien) als Beispiel tektonisch angelegter pneumatolytisch—metasomatischer Lagerstattenbildung : N. Jahrbuch f. Min., Abh. 94, (Festband Ramdohr), 591 - 607, Stutgart.
• Koch, G.S., Jr. ve Link, R.F., 1971, Statistical analysis of geochemical data: vol. II, John Wiley ve Sons, Nevv York, 438 s.
• Koşal, C., 1973, Divriği A-B-C demir yataklarının jeolojisi ve oluşumu üzerinde çalışmalar: MTA Derg., 81, 1—22, Ankara.
• Köprübaşı, N., 1985, Cürek (Divriği) granitoidinin petrolojik ve jenetik incelenmesi: Yüksek Lisans Tezi, KÜ Fen Bilimleri Enstitüsü, 61 s..Trabzon.
• Lepeltier, C., 1969, A simplified Statistical treatment of geochemical data by graphical representation: Econ. Geol., 64, 538-550.
• Levinson, A.A., 1974, introduction to Exploration Geochemistry: Applied Publishing Ltd. Wilmette, İll., U.S.A., 612 s.
• Mc Cammon, R.B., 1974, The Statistical treatment of geochemical data: introduction to Exploration Geochemistry (Levinson, 1974 içinde), 469-508.
• Nichol, L, Garrett, R.G. ve Webb.J.S., 1969,The role of some Statistical and mathematical methods in the interpretation of regional geochemical data: Econ. Geol., 64, 204-220.
• Obial, R.C. ve James, C.H., 1973, Use of Cluster analysis in geochemical Prospecting , with particular reference to Southern Derbyshire, England: ed. MJ. Jones, 1972, Geochemical Exploration, The Instn Min. Metali., 237-257.
• Rossiter, A.G., 1976, Stream—Sediment geochemistry as an exploration technique in the Westmoreland area, northern Australia: BMR J. Aust. Geol. Geophys, l, 2, 153-170.
• Sinclair, AJ., 1983, Univariate analysis: ed. Govett, G.J.S.; Handbook of Exploration Geochemistry, vol. 2 (ed. Hovvarth, RJ), 1983, Statistics and data analysis in geochemical Prospecting, 59—81, Elsevier, Amsterdam.
• Tennant, C.B. ve VVhite, M.L., 1959, Study of the distribution of some geochemical data: Econ. Geol., 54, 1281 — 1290.
• Thompson, M., 1983, Control procedures in geochemical analysis: ed. Govett, G.J.S.; Handbook of Exploration Geochemistry, vol. 2 (ed. Hovvarth, RJ.), 1983, Statistics and data analysis in geochemical Prospecting, 39—58, Elsevier, Amsterdam.
• Tokel. S. ve Köprübaşı, N., 1986, Doğu Anadolu'da Tersiyer yaşlı "S" tipi çarpışma granitoidleri ve üçlü dokanak demir birikimleri (İngilizce özet): Türkiye Jeoloji Kurultayı, 1986 Bildiri özleri, s. S.Ankara.
• Tripathi, V.S., 1979, Factor analysis in geochemical exploration: J. Geochem. Explor., 11,263-275.
• ' Ünlü, T. ve Stendal, H., 1986, Divriği bölgesi demir yataklarının element korelasyonu ve jeokimyası: Orta Anadolu, Türkiye (İngilizce özet): Jeo.Müh., 28, 5-19, Ankara.