| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6433206 | Sedimentary Geology | 2013 | 7 Pages |
Abstract
Synsedimentary and early diagenetic oxygen levels are estimated by evaluating celadonite-smectite formation in Jurassic marine black shale-hosted manganese carbonates. Celadonite formed under suboxic-dysaerobic conditions, Al-rich Fe-smectite formed under suboxic-anaerobic conditions, and nontronite formed under 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 created by a series of mineralized Fe-rich biomats.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Márta Polgári, J.R. Hein, T. Németh, E. Pál-Molnár, T. Vigh,