The biogeochemical cycling of soil organic matter (SOM) plays a central role in regulating
soil health, water quality, carbon storage, and greenhouse gas emissions. Thus, many …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

Paleoredox conditions are commonly evaluated based on elemental proxies but, despite
their frequency of use, most of these proxies have received little comparative evaluation or …

Existing redox classifications and the calibrations of elemental proxies to modern
environmental redox scales are in need of re-evaluation. Here, we review environmental …

Oceanic anoxia---including euxinic settings defined by the presence of water column
hydrogen sulfide (H~ 2~ S)---is minor in the ocean today. Such conditions, however, were …

We analyzed the redox sensitive elements V, Mo, U, Re and Cd in surface sediments from
the Northwest African margin, the US Northwest margin and the Arabian Sea to determine …

The development of a sequential extraction procedure for iron in modern and ancient
sediments is presented. The scheme recognizes seven operationally derived iron pools:(1) …

In some areas of Bangladesh and West Bengal, concentrations of As in groundwater exceed
guide concentrations, set internationally and nationally at 10 to 50 μg l− 1 and may reach …

For more than a decade I have taught a graduate-level course in marine sediment
geochemistry that covers many of the topics discussed in this book. The goal now is to …

The reaction between dissolved sulfide and synthetic iron (oxyhydr) oxide minerals was
studied in artificial seawater and 0.1 M NaCl at pH 7.5 and 25° C. Electron transfer between …