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Journal of Palaeogeography
Fig. 6 | Journal of Palaeogeography

Fig. 6

From: Ooidal ironstones in the Meso-Cenozoic sequences in western Siberia: assessment of formation processes and relationship with regional and global earth processes

Fig. 6

Lithostratigraphic column for well 570 showing distribution of pyrite framboids, geochemical profiles of TOC, Hg, Hg/TOC, elemental enrichment factors (EFs). Correlation between small sizes of pyrite framboids (as per Fig. 5), relatively high content of TOC, Hg/TOC, and elevated enrichment factors of Mo, U, V indicate three hypoxic intervals (marked by light grey shade). Form. = Formation; ir. = ironstone

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