During and after sedimentation large granitic plutons intruded the crust. In areal distribution, these rocks consist of about 60% Archean granitic plutons and granitic gneiss. It is commonly formed from magmatism involving carbonatic melts but not mafic plutons or lavas. Common examples are igneous dikes, sills, plutons, and batholiths. Around the plutons of the batholith, the older rocks recrystallized. In addition, granite plutons intruded into the metamorphic rocks. Subsequently, the magma may cool and solidify to form intrusive igneous bodies (plutons). The central plutons are highly evolved two mica (contain both biotite and muscovite) granites. A considerable gravity anomaly is associated with the Dartmoor pluton as with other such plutons. Cretaceous plutons intrude metamorphic rocks in the southern part of the district. Topaz granites outcrop within the Tregonning, Land's End and St Austell plutons. Anorthosites form in plutons and are composed mostly of plagioclase. Gabbro is also found as plutons associated with continental volcanism. Granitoid rocks from the Upper Cretaceous form two distinct plutons&colon; Northern Pirin and Bezbog. They are formed by hundred of plutons that directly related to subduction.