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Cristobalite in volcanic ash of the Soufriere Hills Volcano, Montserrat, British West Indies
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UNSPECIFIED (1999) Cristobalite in volcanic ash of the Soufriere Hills Volcano, Montserrat, British West Indies. SCIENCE, 283 (5405). pp. 1142-1145. ISSN 0036-8075.
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Abstract
Crystalline silica (mostly cristobalite) was produced by vapor-phase crystallization and devitrification in the andesite Lava dome of the Soufriere Hills volcano, Montserrat. The sub-10-micrometer fraction of ash generated by pyroclastic flows formed by Lava dome collapse contains 10 to 24 weight percent crystalline silica, an enrichment of 2 to 5 relative to the magma caused by selective crushing of the groundmass. The sub-10-micrometer fraction of ash generated by explosive eruptions has much lower contents (3 to 6 percent) of crystalline silica. High Levels of cristobalite in respirable ash raise concerns about adverse health effects of Long-term human exposure to ash from lava dome eruptions.
Item Type: | Journal Article | ||||
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Subjects: | Q Science | ||||
Journal or Publication Title: | SCIENCE | ||||
Publisher: | AMER ASSOC ADVANCEMENT SCIENCE | ||||
ISSN: | 0036-8075 | ||||
Official Date: | 19 February 1999 | ||||
Dates: |
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Volume: | 283 | ||||
Number: | 5405 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 1142-1145 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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