Rocks found include andesite, basalt, dacite, diabase, gabbro and rhyolite. Volcanic rocks of Kurile Lake range from basaltic andesite to rhyolite. Volcanic rocks erupted by Parinacota range in composition from basaltic andesite to rhyolite. Other examples of extrusive rocks are rhyolite and andesite. The eruptive products range from basaltic andesite to rhyolite and rhyodacite. This produces a volcanic arc, composed of mainly basalt, andesite and rhyolite. Yamato Ridge is of continental origin and is composed of granite, rhyolite, andesite and basalt. The magnetite is mixed with sand made from andesite and rhyolite. Topaz is commonly associated with silicic igneous rocks of the granite and rhyolite type. Sulfur dioxide is usually possible to find in basaltic and rhyolite rocks. The Taupo Volcano erupts rhyolite, a viscous magma, with a high silica content. It is mostly underlain by volcanic ash, rhyolite, and tuffaceous rocks. Thundereggs are found in flows of rhyolite lava. Volcanic equivalents would be rhyolite and rhyodacite. The Coso Volcanic Field is best known for its Pleistocene rhyolite.