Naslov
Geochemical alteration of gastropod shells from cretaceous carbonates impacted by lateritization - Gornje Orešje, Croatia

Autori
Posilović, Hrvoje ; Bermanec, Vladimir ; Palinkaš, Vladimir ; Mikac, L. ; Kniewald, Goran

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
Environmental Biogeochemistry at the Extremes, International Symposia on Environmental Biogeochemistry, ISEB 2007, Taupo New Zealand

Mjesto i datum
Taupo, Novi Zeland, 11.11.2007. - 16.11.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Laterite diagenesis; Environmental mineralogy; Shell alteration

Sažetak
Leaching of the laterite mud increased concentrationof nickel, cobalt, copper, chromium, manganese, vanadium, magnesium, silicium and iron. Depending on the environment, during the early diagenetic sediment and fossil history these elements changed mineral composition of fossil shells. Magnesiumand iron is found as magnesite and siderite mineralizations of fossils, silicium is preserved as opal impregnations or complete silicifications of fossils, iron and nickel were precipitated as pyrite and millerite in the presence of organic matter. In this work we focusing on early diagenetic mineralizations of fossil organisms.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA