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Geology of clays
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The article was published on 1970-01-01 and is currently open access. It has received 486 citations till now.read more
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Chemical weathering indices applied to weathering profiles developed on heterogeneous felsic metamorphic parent rocks
Jason R. Price,Michael A. Velbel +1 more
TL;DR: The Weathering Index of Parker (WIP) as mentioned in this paper is the most appropriate index for application to weathering profiles on heterogeneous (and homogeneous) parent rock, because it includes only the highly mobile alkali and alkaline earth elements in its formulation, yielding values that differ greatly from those of the parent rock.
Journal ArticleDOI
Saharan aerosols over the tropical North Atlantic — Mineralogy
TL;DR: For example, during three major Saharan dust outbreaks as they passed across the tropical North Atlantic Ocean during the summer of 1974, the dominant mineral group was mica-illite; the mean concentration at each station ranged from 54% at Sal Island to 64% at Barbados and Miami, Florida as mentioned in this paper.
Journal ArticleDOI
Chemical weathering in a tropical watershed, Luquillo Mountains, Puerto Rico: I. Long-term versus short-term weathering fluxes
Art F. White,Alex E. Blum,Marjorie S. Schulz,Davison V. Vivit,David A. Stonestrom,Matthew C. Larsen,Sheila F. Murphy,Dennis D. Eberl +7 more
TL;DR: The fastest documented weathering rate of silicate rocks on the Earth's surface has been reported in the pristine Rio Icacos watershed in the Luquillo Mountains in eastern Puerto Rico as discussed by the authors.
Journal ArticleDOI
Quartz cement in sandstones: a review
TL;DR: The main factors that control the amount of quartz cement in sandstones are: framework composition, residence time in the silica mobility window, and fluid composition, flow volume and pathways.
Journal ArticleDOI
Deformational Mass Transport and Invasive Processes in Soil Evolution
George H. Brimhall,Oliver A. Chadwick,Christopher J. Lewis,William Compston,Ian S. Williams,Kathy J. Danti,William E. Dietrich,Mary E. Power,David M. Hendricks,James Bratt +9 more
TL;DR: Soils are differentiated vertically by coupled chemical, mechanical, and biological transport processes, which stirs and expands the evolving residuum by invasion by roots and macropore networks that allows mixing of materials from above.