Reduction–oxidation (redox) reactions occur during burial because sediments contain
reactive mixtures of oxidised and reduced components. Diagenetic chemical reactions …

Dolomite is not a simple mineral; it can form as a primary precipitate, a diagenetic
replacement, or as a hydrothermal/metamorphic phase, all that it requires is permeability, a …

Sedimentary pyrite formation during early diagenesis is a major process for controlling the
oxygen level of the atmosphere and the sulfate concentration in seawater over geologic …

The iron sulfides constitute a diverse group of solids and dissolved complexes many of
which play key roles in marine systems. The group is particularly complex in the lower …

Pyrite framboids are densely packed, generally spherical aggregates of submicron-sized
pyrite crystals. In this study, a survey was made of framboid size distributions in recently …

Pyrite framboid formation may be the result of four consecutive processes:(1) nucleation and
growth of initial iron monosulfide microcrystals;(2) reaction of the microcrystals to greigite …

The spatial and temporal distribution of diagenetic alterations in siliciclastic sequences is
controlled by a complex array of interrelated parameters that prevail during eodiagenesis …

Reduced sulfur compounds are ubiquitous components of anaerobic sediments and euxinic
marine environments. They are primarily produced through a complex net of both chemically …

Comparative taphonomy, the study of differential fossil preservation, includes aspects of
biostratinomy and early diagenesis that can be related to marine sedimentary environments …

Methane seeps in the northwestern Black Sea are accompanied by carbonate and pyrite
precipitates. Sediments were sampled at locations on the Romanian (120m depth) and …