Most granitic batholiths represent
a. the exhumed roots of a subduction related magmatic arc
b. a deeply exhumed passive continental margin
c. a deeply exhumed forearc rock assemblage
d. magmas generated in a rift system, prior to development of a passive margin

Option (A)

Explanation:

A batholith can be described as the large horde of the intrusive the igneous rock which are also referred to as the plutonic rock, that are known to be larger than the 100 square km in dimension, these are mostly formed from the cooled magma deep that resides in the Earth's core. These igneous rocks are mostly made up of intermediate or felsic rock types , i.e. quartz monzonite.

correct option is d. magmas generated in a rift system, prior to development of a passive margin

Explanation:

solution

we know that Batholith is a large body of igneous rock that is formed by intrusion and solidification of magma in the beneath Earth surface

It is compose of coarse grain rock

so we know that Most granitic batholiths represent magmas generated in a rift system, prior to development of a passive margin because

(1) Batholiths is  come from melting of magmas

(2) Most batholith  invade across mountain folds

(3) Lower crust granites is residues left after granitic melt segregation

so here correct option is d. magmas generated in a rift system, prior to development of a passive margin

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