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sial
(redirected from Sials)

   Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.01 sec.
sial: see continent continent, largest unit of landmasses on the earth. The continents include Eurasia (conventionally regarded as two continents, Europe and Asia), Africa, North America, South America, Australia, and Antarctica.
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sial [′sī‚al]
(petrology)
A petrologic term for the silica- and alumina-rich upper rock layers of the earth's crust; gives rise to granite magma; the bulk of the continental blocks is sialic. Also known as granitic layer; sal.


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