Publisher Summary This chapter discusses the elemental proxies for palaeoclimatic and
palaeoceanographic variability in marine sediments. Physical and biological processes …

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

The oxygenation of Earth's surface fundamentally altered global biogeochemical cycles and
ultimately paved the way for the rise of metazoans at the end of the Proterozoic. However …

The distributions of certain minor and trace elements in marine sediments should potentially
provide forensic tools for determining the redox conditions of the bottom waters at the time of …

The black shale submember of core shales of Pennsylvanian Kansas-type cyclothems is
highly enriched in redox-sensitive trace elements (TEs) relative to the overlying gray shale …

Metals in the hydrological cycle represent a very broad subject covering all parts of the
geological cycle. The present version of this book, therefore, would not have been possible …

Molybdenum and vanadium are relatively unreactive in seawater and are preferentially
concentrated in sediments overlain by anoxic or near-anoxic waters. We investigate the …

Abstract The Proterozoic Eon hosted the emergence and initial recorded diversification of
eukaryotes. Oxygen levels in the shallow marine settings critical to these events were lower …

In natural waters, the sediment-water interface is the site where gradients in physical,
chemical and biological properties are the greatest. Both chemical and microbiological …

The rates of oxidation of Mn (II) by oxygen in the presence of α-FeOOH, γ-FeOOH, silica, and
δ-Al 2 O 3 were studied experimentally. These solids enhanced the rate of Mn (II) oxidation …