The ring dyke is composite with both porphyritic granophyre and porphyritic felsite components. Some micrographic intergrowths are similar to those characteristic of granophyre. Rock types include picrite, peridotite, dunite, pyroxenite, gabbro and granophyre. It comprises various rock types including gabbro, ferro diorite, anorthosite and granophyre. Intrusions of this age include the Ennerdale Granophyre and the Eskdale Granite. Xenoliths are also found, including diorite and granophyre. They are intrusive into the rhyolites with development of fine grained granophyre at the contact. Some include diorite, and granophyre near the top of the bodies. Here, the main type of igneous rock that can be found is Granophyre.