Igneous rocks and processes Flashcards
Viscosity of basaltic magma?
Low.
Viscosity of andesitic magma?
Intermediate.
Viscosity of rhyolitic magma?
High.
Viscosity of granitic magma?
More viscous than basaltic.
Temperature of basaltic magma?
High.
Temperature of andesitic magma?
Medium.
Temperature of rhyolitic magma?
Low.
Temperature of granitic magma?
Very high.
Gas content of basaltic magma?
Low.
Gas content of andesitic magma?
Moderate.
Gas content of rhyolitic magma?
High.
Gas content of granitic magma?
Very high.
Silica content of basaltic magma?
Low.
Silica content of andesitic magma?
Intermediate.
Silica content of rhyolitic magma?
High.
Silica content of granitic magma?
Very high.
Explosiveness of basaltic magma?
Not very explosive.
Explosiveness of andesitic magma?
Moderate.
Explosiveness of rhyolitic magma?
Explosive.
Explosiveness of granitic magma?
Very explosive.
Location of formation of basaltic magma?
Oceanic and continental crust.
Location of formation of andesitic magma?
Where continents connect to subduction zones.
Location of formation of rhyolitic magma?
Continental crust.
Location of formation of granitic magma?
Melting near base of continents.
