Special Issue "Clay Minerals as Element Sources and Sinks in Diagenetic-Metamorphic Environments"
A special issue of Minerals (ISSN 2075-163X).
Deadline for manuscript submissions: closed (1 April 2020).
Interests: minerals; clay mineralogy; environmental geochemistry; fluid–rock interaction; global element cycles; iron biogeochemistry; interface and nanoscale processes
Interests: diagenesis and low-temperature metamorphism; bacteria–clay interactions; fault rocks; radiogenic isotope dating; disposal of nuclear waste; geopolymer cement; gas storage in reservoirs
The distribution and abundance of clay minerals in surface and upper crustal environments of the Earth has played a key role in the origin of life, the evolution of ocean biogeochemistry, and climate change. As a result, these minerals have significantly influenced the petrography, mineralogy, and geochemistry of sediments across time and space. Although clay mineral reactions are generally considered to be slow, there is increasing evidence of them acting as important element sources and sinks in a great variety of rocks (e.g., sedimentary, hydrothermal, and metamorphic). They are also important carrier materials for elements and nutrients in developing soils, modern marine/continental deposits, and ancient sedimentary–metamorphic rocks. Clay minerals provide important reactive surfaces for adsorption and desorption of elements and compounds, controlling metal ion transport in aquatic media. However, quantitative estimates of the contribution of clay minerals in the global element cycles (Fe, Mg, Si, trace elements, etc.) are still scarce, and the role of clay mineral reactions on element mobility under various environmental conditions is poorly constrained. This Special Issue welcomes papers that confirm the important role of clay minerals as element sources, carriers, and sinks in diagenetic–metamorphic environments based on the full range of mineralogical, nano- to microstructural and (isotope) geochemical investigation observations. Studies that aim at resolving the physicochemical processes at the clay/water interface, as well as papers providing experimental and modelling data to unravel the relations between clay mineral reactivity and element transport, (re-)cycling and sequestration processes, are particularly welcome.
Dr. Andre Baldermann
Prof. Dr. Laurence Noel Warr
Manuscript Submission Information
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- clay minerals
- reactive transport
- interface processes