A lahar ( / ˈlɑːhɑːr /, from Javanese: lahar, ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water.

Dec 6, 2023 · Lahar is an Indonesian word describing a mudflow or debris flow that originates on the slopes of a volcano. Small debris flows are common in the Cascades, where they form during …

Lahars are mixtures of water, volcanic ash, tephra, rock fragments, and chunks of ice that can flow like wet concrete. The term comes from the Indonesian word for these destructive mudflows that cause …

lahar, mudflow of volcanic material. Lahars may carry all sizes of material from ash to large boulders and produce deposits of volcanic conglomerate.

May 12, 2023 · A lahar is a complex natural event characterized by a viscous, fast-moving flow of materials, predominantly originating from a volcanic source. They can be classified into two main …

Many volcanologists prefer to define a lahar as caused by a volcanic eruption. But in ancient deposits, it is not always possible to determine if the lahar was caused directly by eruption or by remobilisation …

Dec 3, 2025 · A lahar is a swift, destructive volcanic mudflow or debris flow composed of volcanic material and water. The term originates from the Indonesian language, describing flows that occur on …