Description: Gabbroic intrusion refers to the geological process by which gabbro, a coarse-grained plutonic igneous rock primarily composed of plagioclase and pyroxene, forms from magma that intrudes into pre-existing rocks. This phenomenon occurs when magma, rising from the Earth’s mantle, infiltrates cooler, consolidated rock layers, causing slow cooling that allows minerals to crystallize within the rock. Gabbroic intrusions are typically large rock bodies that can vary in size from small dikes to large batholiths. These formations are important in geology as they provide information about the composition of the Earth’s mantle and the magmatic processes occurring within the Earth. Additionally, gabbro is known for its strength and durability, making it a valuable material in construction and stone industries. Gabbroic intrusions can also influence the mineralogy of surrounding rocks, altering their chemical and physical composition through processes such as metamorphism.
