Distribution of Trace Elements in Ophiolites from Cazaneshti, Metalliferous Mountains, Romania
Abstract
Distribution of minor elements in ophiolites from Cazaneshti area of Metalliferous Mountains has been studied. Petrographic studies were carried out to differentiate various lithological units of the area. the analysed data was treated statistically, to find the lognormality of various populations by cumulative frequency curve method. Co, Ni and Cr appear to be formed by identical geochemical process, whereas, V, Cu and Pb are represented by two populations. Zn is abnormally low in the rocks studied. Other important parameters like geometric deviation, coefficient of deviation and coefficient of variation, etc., have been calculated to decipher the epigenetic nature and chemical dispersion of minor elements in the rock. A close relationship between Cu:Pb and Pb:Zn indicates that these minerals have been formed by identical geochemical process.
References
Atanasiu, I., 1953. Cineritele din Neogenul romanesc si virsta eruptiunilor corespunzaroare. .An. Com. Geol. XXV.
Antonescu, Em. &. Mantea, Gh., 1966. Asupra virstei piradastitelor din zona Ribitavah Bradului (muntii Metalitieri). Dari de seama com. Geo. LII (1964-65), I.
Baltres, A., 1969. Microfaciesul calcarelor cretacicului inferior alohton din partea meridionala a Muntilor Haghimas-D.S. Inst. Geol. LVI.
Basiota Basilui, M.D., 1933. Muntii Apuseni ai transilvaniei sau atudiul gedogic asupra structurii Muntilor Metaliferi ai TransiIvdei, RIasiu.
Bateman, M.A., 1942. Magma and ores. Econ. Geol. 37. No. 1.
Rleahu. M. & Dimian, M., 1962. Garactere stratonowice ale seriilor creacice din Mubtii Metaliferi. Asoc, Geo. Carp. Balc. Congr. V., Buc. 1961, III, I.
Borcos, M., Mantea, Ch. & Gheorghita, I., 1965. Relatii stratigrafice si tectonic intre formatiunik sedimentare mezmoice si complexul rocilar eruptive bszice mezozoice cu privire speciala asupra Muntilor Metaliferi. Corn. ICenI. S,S.N.G. 111, 165-186.
Borcos, M., 1965. Observation in legatura cu determinarea conditiilor tennodinamice do formare a unor filiane si zacaminte hidrotermale din regiunea A4untilor Metaliferi, I. sectorui Almas-Stanija, St, Cerc. Geol., 10, I, 229624.
Bowen, L.N., 1928. The evolution of the igneous rocks.
Car, J.M., 1954. Zoned plagioclases in layered gabbros of the Skaergaard intrusion, East Greenland. Min, Mag. 30, 1-367.
Cioflica, G., 1952. Raport geologic asupra regiunii Cazaneshti. Arhiva Comit. Geol.
Cioflica, G., 1962. Studiul petrografic a1 formatiunilor eruptive din reguinea Caznneshti-Ciungeni (Muntii Drocea) Anal. Comit. Geol. XXXII.
Lepeltier, C., 1969. A simplified statistical treatment of geochemical data by graphical representation. Econ, Geol. 641 (1960), 538-550.
Daly, R.A., 1935. Igneous rocks and the depth d the earth.
Dimitrema, R., 1958. Asupra pozitiei vulcanismului neogen din Muntii Apuseni in cadrul sistemului Carpatic. Corn. Anal. R. P.R. XI, I.
Dimitrema, R., 1962. Cercetari gmlogice in regiunea Siria, Dari de seama. Corn. Geol, XLV (1957-58).
Dimitrema, R.., 1964. Controbutii la cunraasterea evolutiei geomagmatice a Muntilor Apuscni in relatie cu gmkctonica. D.S. Cam. Geol. XLIX.
Elliot, R.B., 1952. Trachy-ophitic texture in Carboniferous basalts. Min. Mag. 29, 925-928.
Elston, W.A. & Poldervaarr, A., 1954. The calc-alkaline series and the trend of fractional crystallization of basaltic magma; A new approach at graphic representation. Jour. Geol. 62, 150462.
Giusca. D. & Cioflica, G., 1965. Pinza intrusiva de la Cazaneshti-Ciungani. Anal. Univ. C.I. Pathon. Ser. St. Nat. No. 12, Bucuresti.
Giusca. D. & Cioflica, G., 1965. Structura pinzei intrusive de la Cazaneshti -Ciungani. Anal. Univ. C.1. Parhon. &. St. Nat. No. 13, Bucuresti.
Goldschmidt, M.V., 1954. Geochemistry. Calredon Press, Oxford.
Jacob, D., 1953. Contributioni la stratigrydfia si tectonics reguinii vesticc a Muntilor Metalifen. Acad. R.P,R., Filiala Cluj, St. Covc. S. tiint, V, 3-4, 77-98.
anovici, V-, Giuscal D., Ghitulescu, T.P., Borcos, M., Lupu, M., Bleahu, M. and Savu, H., 1968. Evolutia Geologh a Muntilor Metaliferi. Editura Acaddei, R.S.R.