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Journal of Volcanology and Geothermal Research, 2003
Abstract Explosive volcanic eruptions are the result of intensive magma and rock fragmentation, and they produce volcanic ash, which consists of ...
Zimanowski B +3 more
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Abstract Explosive volcanic eruptions are the result of intensive magma and rock fragmentation, and they produce volcanic ash, which consists of ...
Zimanowski B +3 more
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Smithsonian Contributions to the Earth Sciences, 1974
Volcanic ash samples collected from a variety of recent eruptions were studied, using petrography, chemical analyses, and scanning electron microscopy to characterize each ash type and to relate ash morphology to magma composition and eruption type. The ashes are best placed into two broad genetic categories: magmatic and hydrovolcanic (phreatomagmatic)
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Volcanic ash samples collected from a variety of recent eruptions were studied, using petrography, chemical analyses, and scanning electron microscopy to characterize each ash type and to relate ash morphology to magma composition and eruption type. The ashes are best placed into two broad genetic categories: magmatic and hydrovolcanic (phreatomagmatic)
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Bulletin (Kansas Geological Survey), 1952
Kansas volcanic ash has been used as an abrasive, ceramic glaze material, an additive to cement, a sweeping compound, and black top highway dressing; potential future uses include the manufacture of lightweight aggregate and cellular blocks, glass, and ceramic bodies, and as an inert filler.
J.S. Carey +3 more
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Kansas volcanic ash has been used as an abrasive, ceramic glaze material, an additive to cement, a sweeping compound, and black top highway dressing; potential future uses include the manufacture of lightweight aggregate and cellular blocks, glass, and ceramic bodies, and as an inert filler.
J.S. Carey +3 more
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Interaction of cyanobacteria with volcanic ashes
Microbiology, 2013Capacity for growth in water suspensions of volcanic ashes was shown for two oscillatorian cyanobacterial isolates from different environments. Growth dynamics depended on the physicochemical characteristics of the ashes and on pH of the medium. During cyanobacterial growth, some elements were leached, which either stimulated or inhibited growth. These
L M, Gerasimenko +3 more
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Inorganic Phosphorus Forms in Soufrière Hills Volcanic Ash and Volcanic Ash-Derived Soil
Soil Science, 2009Abstract Soufriere Hills volcano is an active andesitic volcano located in the south-central part of Montserrat Island, West Indies. Phosphorus (P)-rich ash emitted from the Soufriere Hills volcano is expected to have effects on P retention and distribution in highly acidic soils surrounding the areas inundated with ash for several years.
Thilini D. Ranatunga +5 more
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Geological Society of America Bulletin, 1928
Location and Extent of the Deposits The volcanic ash or dust in the Great Plains region was first recognized by Wadsworth, who in 1884 described deposits of such material that lie between the White and Niobrara rivers. 3 Four years earlier Aughey 4 erroneously identified similar material as geyserite, and that name persisted in the literature for ...
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Location and Extent of the Deposits The volcanic ash or dust in the Great Plains region was first recognized by Wadsworth, who in 1884 described deposits of such material that lie between the White and Niobrara rivers. 3 Four years earlier Aughey 4 erroneously identified similar material as geyserite, and that name persisted in the literature for ...
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Impacts from Volcanic Ash Fall
2015All explosive eruptions produce volcanic ash, fragments of volcanic rock generated when magma or vent material is explosively disintegrated during eruption. Volcanic ash is convected upwards within the eruption column and carried downwind, falling out of suspension and potentially affecting communities across hundreds of square kilometers. Although ash
Wilson, Thomas M. +2 more
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Volcanic Ash Fall Optimization
This paper proposes a novel heuristic optimization algorithm that simulates search space exploration and local optimization behavior based on the volcanic ashfall process. The algorithm incorporates hierarchical deposition mechanisms, volcanic airflow perturbations, ash particle fusion, and deposition feedback mechanisms.openaire +1 more source