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Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications

G. Durn
D. Slovenec
M. Čović

Puni tekst: engleski, pdf (168 KB) str. 27-36 preuzimanja: 797* citiraj
APA 6th Edition
Durn, G., Slovenec, D. i Čović, M. (2001). Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications. Geologia Croatica, 54 (1), 27-36. Preuzeto s https://hrcak.srce.hr/3858
MLA 8th Edition
Durn, G., et al. "Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications." Geologia Croatica, vol. 54, br. 1, 2001, str. 27-36. https://hrcak.srce.hr/3858. Citirano 29.03.2020.
Chicago 17th Edition
Durn, G., D. Slovenec i M. Čović. "Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications." Geologia Croatica 54, br. 1 (2001): 27-36. https://hrcak.srce.hr/3858
Harvard
Durn, G., Slovenec, D., i Čović, M. (2001). 'Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications', Geologia Croatica, 54(1), str. 27-36. Preuzeto s: https://hrcak.srce.hr/3858 (Datum pristupa: 29.03.2020.)
Vancouver
Durn G, Slovenec D, Čović M. Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications. Geologia Croatica [Internet]. 2001 [pristupljeno 29.03.2020.];54(1):27-36. Dostupno na: https://hrcak.srce.hr/3858
IEEE
G. Durn, D. Slovenec i M. Čović, "Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications", Geologia Croatica, vol.54, br. 1, str. 27-36, 2001. [Online]. Dostupno na: https://hrcak.srce.hr/3858. [Citirano: 29.03.2020.]

Sažetak
Haematite and goethite are the predominant pedogenic mineral phases in terra rossa from Istria. Limited variation of selected Fe oxide characteristics in analysed samples indicates the specific pedogenic environment in which terra rossa is formed. The mean value of the Fed/Fet ratio, taken as an index of weathering is 0.7 and reflects quite a high degree of weathering of Fe-containing primary silicates. Relatively uniform Fed/clay ratios clearly indicate a predominance of co-illuviation of clay and Fe oxides. Low values of Feo point to the low content of poorly crystalline Fe oxides in analysed terra rossa. Feo/Fed ratios in the analysed profiles vary. In the upper part of the Pomer, Porec and Novigrad profiles Feo/Fed ratios are higher than in the lower part of those profiles which may be explained as a result of different pedogenic environments and/or additions of external materials in the upper part of those profiles. The lack of positive correlation between Mnd and clay and Mnd and Fed is a consequence of remobilization of manganese due to hydromorphic processes which post-dated co-illuviation of clay and Fe oxides.

During the Late Tertiary and Quaternary the pedogenic environment on hard carbonate rocks of the Jurassic-Cretaceous-Palaeogene carbonate plain of southern and western Istria generally remained suitable for rubification. However, (Neo)tectonic activity and the input of external material, as well as various climatic fluctuations might have significantly effected terra rossa through the processes of erosion, colluviation, yellowing and secondary hydromorphy.

Ključne riječi
Terra rossa; Iron; Manganese; Iron oxides; Istria; Croatia

Hrčak ID: 3858

URI
https://hrcak.srce.hr/3858

Posjeta: 1.063 *