Polgári, Márta and Hein, J. R. and Németh, Tibor and Pál-Molnár, Elemér and Vigh, Tamás (2013) Celadonite and smectite formation in the Úrkút Mn-carbonate ore deposit (Hungary). SEDIMENTARY GEOLOGY, 294. pp. 157-163. ISSN 0037-0738
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Abstract
Synsedimentary and early diagenetic oxygen levels are estimated by evaluating celadonitesmectite formation in marine Jurassic black shale-hosted manganese-carbonates. Celadonite formed under suboxic-dysaerobic conditions, Al-rich Fe-smectite formed at suboxic-anaerobic conditions, and nontronite formed at anoxic-anaerobic conditions during sedimentary burial. A genetic pathway by direct precipitation from solution is proposed for the enormous mass of celadonite, based on mineral and textural evidence. Lamination of the manganese ore is independent of clay-mineral composition and was given by a series of mineralized microbial Ferich biomats.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Jurassic, Mn carbonate ore, celadonite, nontronite, microbial Fe oxidation |
| Subjects: | Q Science / természettudomány > Q1 Science (General) / természettudomány általában Q Science / természettudomány > QE Geology / földtudományok Q Science / természettudomány > QE Geology / földtudományok > QE02 Geochemistry / geokémia |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 23 Jan 2014 13:25 |
| Last Modified: | 23 Jan 2014 13:25 |
| URI: | http://real.mtak.hu/id/eprint/9103 |
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