What type of volcanic rock would you expect Gollum Island to be composed of and why? (Geoworld plate tectonics lab)

Its composed of rocks of 540 million years ago, i. e Precambrian formations of igneous rocks.

Explanation:

Also called the Snake Island, is an island located in northern Macedonia, the island covers 20 hectares and is located near to Prespa lake, a few kilometers from this territory of greek and are being located on the ancient property and It is an uninhabited island. Precambrian formations of highly metamorphosed crystalline rocks. Lower parts of sedimentary rocks and also found are gneiss, biotite, muscovite, the Cenozoic era consists of volcanic formation dating back to 2.5 million years ago. Natural resources found in these zones are zinc, copper, and lead.