Magma sometimes approaches or escapes onto earths surface, where does this magma form ?

chambers od liquid lave are inside chamber deep in the earths crust

true is the answer : )

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.