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Geochemical Processes: Water and Sediment Environments
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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
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Journal ArticleDOI
Major- and trace-element and sr isotope constraints on fluid circulation in the barbados accretionary complex. part ii: circulation rates and fluxes
TL;DR: In this paper, the authors used a steady-state advection-diffusion model to estimate the fluid circulation rate in two diatremes (Atalante and Cyclope) and in one mud diapir (C).
Book ChapterDOI
9.15 – Evolution of Sedimentary Rocks
TL;DR: In this paper, it has been shown that recycling and evolution are complementary concepts and that the observed secular variations in relative proportions of lithologic types and in chemistry of sedimentary rocks were mostly given an evolutionary interpretation.
Journal ArticleDOI
Silica distribution in interstitial waters and sediments from the southeastern pacific
TL;DR: Analyses for silica in the interstitial water of five cores from the southeast Pacific are presented in this article, showing that silica is enriched in these interstitial waters resulting in a vertical flux of silica of between 10 and 50 μmol cm −2 yr −1 from the sediment into the overlaying seawater.
Journal ArticleDOI
The isolation of Kau Bay during the last glaciation : direct evidence from interstitial water chlorinity
TL;DR: Kau Bay is a 470m-deep basin separated from the Pacific Ocean by a shallow sill (40 m below sea level), which restricts water circulation as mentioned in this paper, and the lack of substantial ventilation results in anoxic sediments.
Journal ArticleDOI
Formation and transport of radioactive colloids in porous media
J.Y. Chung,Kun Jai Lee +1 more
TL;DR: In this paper, the effect of the presence of colloids in natural groundwater on radionuclide transport has been investigated and the results show that the reduction of colloidal size enhances the corresponding colloid concentration when colloidal transport is only affected by diffusion phenomena.