ignimbrite - a deposit of a pyroclastic flow or pyroclastic surge or both.
lapilli - pyroclastic particles ranging in size from .04 to 2.6 inches.
laterite - soil so rich in iron oxide that it may be mined as an iron ore.
lava - a volcanic effusion of molten rock that flows upon the ground, also solidified lava.
limestone - a rock composed of an aggregate of calcium carbonate minerals.
littoral cone - a mound of volcanic particles formed when hot lava mixes with water at the shoreline of a body of water and explodes. The mound is a cone that looks like a volcano but has no underground vent.
Bibliography
Out of the Crater: Chronicles of a Volcanologist, Richard V. Fisher, Princeton University Press, 1999
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