What Are Maars and How Do They Form?
Maars are shallow, nearly rounded to oval bowl-shaped volcanic craters surrounded by low rims of fragmental debris or pyroclasts. These landforms are hydrovolcanic and usually
Volcanology
What Are Tuff Rings and How Do They Form?
Tuff rings are small, low-profile, circular volcanic cones with broad, shallow craters and gentle slopes. These volcanic landforms form from steam explosions that result from
What Are Tuff Cones and How Do They Form?
Tuff cones or ash cones are small, nearly circular, low-profile, steep-sided volcanic landforms with a cone-like shape and a broad, bowl-shaped crater at their summits.
What Are Nuées Ardentes and How Do They Form?
Nuées ardentes, Peléan clouds, or glowing avalanches refer to hot, sometimes incandescent turbulent clouds of expanding gas, ash, and other volcanic debris rapidly flowing downwards
Types of Lava Domes You Should Know
Lava domes are steep-sided mounds of volcanic rocks formed by extrusion and piling of thick lava around the vent. The high viscosity (resistance to flow)
What Are Lava Domes and How Do They Form?
Lava domes are rounded, often steep-sided mounds or spines formed from thick or viscous lava extrusion from volcanic vents. This lava cools around the vent
What Are Spatter Cones and How Do They Form?
Spatter cones are small, steep-sided, nearly circular conical hills or mounds of welded magma blobs or fragments formed around a vent. These welded lava blobs
What Are Cinder Cone Volcanoes, Examples, and How They Form
Cinder cone volcanoes or scoria cones are small, steep-sided, conical-shaped, nearly circular, or oval hills. These hills are made of highly vesiculated, mafic to intermediate
Get the Six Lava Flow Types or Morphologies Explained
There are six lava flow types or morphologies: pahoehoe, aa, blocky lava, pillow lava, sheet flow, and lobate. The first three are subaerial, and the