Linzor and other volcanoes in the neighbourhood are constructed by breccia, lava domes, lava flows, pyroclastic flows and breccia. The volcanoes are formed by basaltic andesite, andesite and dacite. Pyroxene andesite is the dominant component. The volcanoes are constructed on top of Miocene ignimbrites and are of Pleistocene-Holocene age. An Inca sanctuary has been found on Linzor.