batholithic การใช้

• Many granulite terrains and even batholithic rocks may have undergone UHP metamorphism that was subsequently obliterated
• Migmatites, batholithic intrusive and granulitic metamorphic rocks show foliation and compositional banding; the rocks are uniformly hard and so thoroughly deformed that little foliation exists.
• These rocks consisting mainly of granodiorites constitute the third magmatic event and occupy an area of batholithic dimensions extending across most of the southern portion of the dome.
• Erie is thought to have been formed during the Jurassic period ( 155-170 Ma . ) by invasive volcanic flows creating batholithic masses of diorite, which also helped to create the island arcs associated with the San Juan Islands.