Thus far, the 2019 eruption has produced lava flows, pyroclastic flows, and lahars (mudflows) on the flanks of the volcano.

Besides simple mudflows we have glacial mudslides that are called jökulhlaups and some volcanic flows that are known as lahars.

Thus far, the 2019 eruption has produced lava flows, pyroclastic flows, lahars (mudflows), and minor ash fallout on the flanks of the volcano.

Obsidian is commonly found within the margins of rhyolitic lava flows known as ‘obsidian flows’.

Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows.

Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flow.

It produces violent large eruptions and often leads to pyroclastic flows and mudflows.

Researchers mapped the boundaries of the lava flows from each of the 29 volcanic vents and determined the stratigraphy, or layering, of the flows.

The team mapped the boundaries of the lava flows from each of the 29 volcanic vents and determined the stratigraphy, or layering, of the flows.

Incredible lava spills testify the past eruptions.

Experts also mapped the boundaries of the lava flow identified in each of the 29 volcanic vents, coming up with the the stratigraphy, or layering, of the flows.

A heated bushing (12) supplies streams of molten glass to be drawn into continuous fibers (14), and a drawing device (20) attenuates the streams into fibers.

The lahars on the map did not have a distinct ending point, and the main threat seemed to be from pyroclastic flows, not from mudflows.

The mystery persists about the origin of the Martian flows

Basaltic lava flows, a source of non-cumulate eucrites.