scispace - formally typeset
Open AccessBook

Geochemical Processes: Water and Sediment Environments

Reads0
Chats0
TLDR
The approach of this book to geochemistry can be summarized in the question: What happens, and how fast does it happen, when waters, solids, and gases interact in the earth's surface environment? The environment of the earths surface is made of solids and fluids, and the interactions among them are responsible for much of what is taking place in the physical world around us as mentioned in this paper.
Abstract
The approach of this book to geochemistry can be summarized in the question: What happens, and how fast does it happen, when waters, solids, and gases interact in the earths surface environment? The environment of the earths surface is made of solids and fluids, and theinteractions among them are responsible for much of what is taking place in the physical world around us. The dissolved load of natural waters and the materials of which sediments are made are the products of reactions taking place practically everywhere on land, in the atmosphere, and in the hydrosphere. Thus the term water and sediment environments applies effectivelly to much of the surface environment of the earth, including the zone of up to a few kilometers above and below the land and ocean surface. Evolution present itself to us as a more or less complex variety of processes-geological, physical, chemical, and biological. To this end, the inclusive title Geochemical Processes was chosen for the book, to introduce a text that emphasizes processes and time-dependent phenomena.

read more

Citations
More filters
Journal ArticleDOI

Biogeochemical cycling of methylmercury in lakes and tundra watersheds of Arctic Alaska.

TL;DR: It is suggested that loadings of Hg derived from atmospheric deposition are a major factor affecting MMHg cycling in arctic ecosystems and environmental changes associated with warming of the Arctic may enhance MMHG bioaccumulation by stimulating Hg methylation and inhibiting photodecomposition.
Journal ArticleDOI

Geochemical mass balances and weathering rates in forested watersheds of the southern Blue Ridge II. Effects of botanical uptake terms

TL;DR: In this article, the authors show that misunderstanding the mathematical constraints which are built into the most widely used geochemical mass balance equations commonly causes errors (underestimates) of up to a factor of 4 in the calculated rates of mineral weathering and soil formation.
Journal ArticleDOI

Early diagenetic recrystallization of Holocene (<3000 years old) peritidal dolomites, Ambergris Cay, Belize

TL;DR: In this article, an X-ray pattern-fitting structure refinements indicate increasing Ca and Mg concentrations on their respective sites (cation ordering) as a function of increasing depth, which is consistent with recrystallization via a surface energy-driven dissolution-reprecipitation process.
Journal ArticleDOI

Biogeochemical cycling in an organic-rich coastal marine basin. 7. Sulfur mass balance, oxygen uptake and sulfide retention

TL;DR: Sulfur and oxygen fluxes were quantified in the seasonally varying anoxic marine sedimentary system of Cape Lookout Bight, N.C., U.S.A. as mentioned in this paper.
Journal ArticleDOI

Modelling the diffusive transport and remobilisation of 137Cs in sediments: The effects of sorption kinetics and reversibility

TL;DR: In this article, a model was developed to simulate the transport of 137Cs in these sediments, taking account of changes in sorption properties as the concentration of the competing ammonium ion changes with depth, as well as transfers of activity to less-exchangeable sites on the solids.
Related Papers (5)