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pro vyhledávání: '"Ed Vicenzi"'
Publikováno v:
Microscopy and Microanalysis. 23:1050-1051
Publikováno v:
Journal of Volcanology and Geothermal Research. 37:325-337
Basalts containing as much as 50% plagioclase phenocrysts that attain lengths of several centimeters are common on the northern islands of the Galapagos Archipelago. Mineralogic and geochemical evidence requires that the large anorthitic phenocrysts