▁New ▁Ham pshire ▁along ▁a ▁north - n ortheast ▁by ▁south - s outh west ▁axis , ▁extending ▁from ▁the ▁town ▁of ▁Gro ton ▁in ▁the ▁north ▁to ▁Dublin ▁in ▁the ▁south . ▁ ▁Mount ▁Card igan , ▁from ▁which ▁the ▁plut on ▁is ▁named , ▁stands ▁near ▁the ▁north ▁end . ▁ ▁The ▁plut on ▁ranges ▁in ▁composition ▁from ▁gran ite ▁to ▁ton ol ite ▁( s - type ) ▁and ▁is ▁likely ▁derived ▁from ▁cr ust al ▁mel ting ▁of ▁pel it ic ▁rocks . ▁The ▁rocks ▁show ▁fol iation ▁indicating ▁they ▁were ▁imp la ced ▁early ▁in ▁the ▁Ac ad ian ▁O ro gen y ▁and ▁subsequently ▁over print ed ▁by ▁later ▁met am orph ic ▁events . ▁Min er als ▁in ▁the ▁Card igan ▁Pl ut on ▁include ▁large ▁K - feld s par ▁meg ac ry st s ▁and ▁quart z , ▁pl agi oc l ase , ▁mus cov ite , ▁gar net , ▁bi ot ite , ▁and ▁less ▁abund ant ▁min er als ▁including ▁s ill iman ite , ▁cord ier ite , ▁il men ite , ▁graph ite , ▁ap at ite , ▁mon az ite , ▁z ir con , ▁and ▁all an ite . ▁The ▁plut on ▁is ▁dated ▁at ▁ 4 1 1 ▁+ /- ▁ 1 9 ▁Ma ▁by ▁the ▁R b / S r ▁method . ▁ ▁References ▁ ▁Category : Ge olog ic ▁form ations ▁of ▁New ▁Ham pshire <0x0A> </s> ▁Naz im ▁U dd in ▁Ah med