Other
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.3423c&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 56, Issue 9, pp.3423-3434
Other
1
Scientific paper
Etch pits on 50-100 m orthoclase and pyribole grains from the E, B, and C horizons of a catena or drainage sequence of well-drained, somewhat poorly drained, and poorly drained loessal soils were analyzed using SEM and digital image analysis. The objective was to determine the influence of soil drainage conditions and the associated geochemical environments on dissolution of primary silicates as determined from the distribution of etch pits on the grain surfaces. Etch-pit size frequency distributions indicated that the poorly drained soil contained the smallest and most numerous etch pits for both minerals. This indicated low growth rates for etch pits in the poorly drained soil. Analysis of etch-pit shapes indicated that etch pits on pyriboles were more elongated and irregular in the poorly drained soil, possibly resulting from a greater growth rate; whereas etch pits on orthoclase grains were more elongated and irregular in the well-drained soil. The larger, more elongated and irregularly shaped etch pits on orthoclase from the well-drained soil, indicative of a greater pit growth rate, is consistent with a flushing model of mineral weathering in soils. The etch-pit size distribution on pyriboles is consistent with the flushing concept, but the shape data indicates that other mechanisms of weathering may be involved.
Cremeens David L.
Darmody R. G.
Norton Denis L.
No associations
LandOfFree
Etch-pit size and shape distribution on orthoclase and pyriboles in a loess catena does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Etch-pit size and shape distribution on orthoclase and pyriboles in a loess catena, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Etch-pit size and shape distribution on orthoclase and pyriboles in a loess catena will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1767622