11. A number of pillow lava and pillow breccia deposits are exposed throughout the Chilcotin Group. 12. Radiolarites are also found in the nearby Southern Uplands where they are associated with pillow lava . 13. The type of rocks that form the Insular Mountains are turbidites and pillow lavas . mantle. 14. The blocks are mostly turbidite, but also includes chert, and some pillow lava basalt. 15. Hyaloclastites and pillow lavas were formed when the lava flowed into lakes, rivers and seas. 16. Pillow lavas are also found associated with some subglacial volcanoes at an early stage of an eruption.17. The presence of pillow lavas in the oldest preserved volcanic sequences on the planet, the metamorphic belts. 18. Because the eruptions occur with the volcano underwater, the form of lava typically erupted is pillow lava . 19. The water quickly cools the lava, resulting in pillow lava shapes similar to those of underwater volcanoes. 20. The most common underwater flow is pillow lava , a circular lava flow named after its unusual shape.
