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Dependence of plant-induced weathering of basalt and andesite on nutrient conditions
andesite basalt element release nutrient conditions plants weathering
2017/8/9
To study the effect of nutrient conditions on the weathering of rock, hydroponic cultivation experiments of two crop plants (soybean and maize) were conducted with two different levels of nutrient sup...
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges
Fall-experiments Merapi basaltic andesite pyroclastic surges
2009/10/22
We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact a...
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges
Fall-experiments Merapi basaltic andesite constraints pyroclastic surges
2010/9/28
We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact a...
Comparative Study of the Mobility of Major and Trace Elements During Alteration of an Andesite and a Rhyolite to Bentonite, in the Islands of Milos and Kimolos, Aegean, Greece
Alteration Andesite Bentonite Element Mobilization Mordenite Phosphates REE Fractionation Residual Enrichment Rhyolite Smectite Water:Rock Ratio
2011/12/8
Abstract: Progressive alteration by seawater of an andesite in the Aegean Island of Milos and an ignimbrite in the Aegean Island of Kimolos, Greece, formed bentonites with or without zeolites. Both pr...
Alteration of Andesite in Wet, Unstable Soils of Oregon's Western Cascades
Andesite Halloysite Scanning electron microscopy Smectite Soil Weathering
2012/2/7
Alteration products of andesite cobbles from wet soils formed in volcanic colluvial material were studied using petrographic, electron microscope, X-ray powder diffraction, and thermal techniques. Aug...
Clay mineral associations in saprolite of two andesites from the Cascade Range of northeastern California were determined. Sesquioxidic allophane with a high CEC delta value dominates the clay fractio...