This rock was quarried on the Scottish island of Ailsa Craig for use in curling stones. Sodium content distinguishes the S and I types of this rock, which forms batholiths like Half-Dome. Unlike the similar (*) rhyolite, this rock is found under the Earth's surface, making up most of the Earth's con
This rock was quarried on the Scottish island of Ailsa Craig for use in curling stones. Sodium content distinguishes the S and I types of this rock, which forms batholiths like Half-Dome. Unlike the similar (*) rhyolite, this rock is found under the Earth's surface, making up most of the Earth's continental plates. For 10 points, name this light-colored igneous rock, whose large quartz crystals make it a durable building alternative to marble.
This rock was quarried on the Scottish island of Ailsa Craig for use in curling stones.