A volcanic dam is a type of natural dam produced directly or indirectly by volcanism, which holds or temporarily restricts the flow of surface water in existing streams, like a man-made dam. There are two main types of volcanic dams: those created by the flow of molten lava, and those created by the primary or secondary deposition of pyroclastic material and debris.
A volcanic dam is a type of natural dam produced directly or indirectly by volcanism, which holds or temporarily restricts the flow of surface water in existing streams, like a man-made dam. There are two main types of volcanic dams: those created by the flow of molten lava, and those created by the primary or secondary deposition of pyroclastic material and debris.
Source: Wikipedia "Volcanic dam" · CC BY-SA 4.0
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