WebIgneous Rocks Intrusive into the Metamorphic Series. Pegmatites. Dykes and veins of … The ultimate source of magma is partial melting of rock in the upper mantle and lower crust. This produces magma that is less dense than its source rock. For example, a granitic magma, which is high in silica, has a density of 2.4 Mg/m , much less than the 2.8 Mg/m of high-grade metamorphic rock. This gives the magma tremendous buoyancy, so that ascent of the magma is inevitable once enough magma has accumulated. However, the question of precisely how large quantitie…

Intrusive Igneous Rocks - Diagram, Features, Types, Volcano

Regional metamorphism is a general term for metamorphism that affects entire regions of the Earth's crust. It most often refers to dynamothermal metamorphism, which takes place in orogenic belts (regions where mountain building is taking place), but also includes burial metamorphism, which results simply from rock being buried to great depths below the Earth's surface in a subsiding basin. Web2 days ago · Intrusive volcanism is a type of activity where magma is forced into the … tirth ram powerlifting

7 Intrusive Igneous Rocks Examples - The Boffins Portal

WebExamples of intrusive igneous rocks are: diabase, diorite, gabbro, granite, pegmatite, … WebJul 15, 2024 · Metamorphic rock, estimated to be as old as 3.8 billion years, located near … WebAnswer 1: Rock with their matching description are given below..... Basalt: extrusive … tirth shanthi