volumtette

Volumtette is a term used in the field of geology and geophysics to describe a specific type of volcanic feature. It refers to a small, often dome-shaped volcanic mound that forms when viscous lava is extruded from a volcano. The term is derived from the Italian words "volcano" and "tetta," which means "breast," reflecting the rounded, breast-like appearance of these features.

Volumtettes are typically composed of lava that is too viscous to flow freely, such as rhyolite or dacite. As the lava is pushed out of the volcano, it piles up around the vent, creating a steep-sided mound. These features are often found on the flanks of larger volcanoes or as isolated structures in volcanic fields.

The formation of a volumtette is a slow process, as the viscous lava does not travel far from the vent. Over time, the mound can grow larger, sometimes reaching several hundred meters in height. The surface of a volumtette is often rough and jagged, due to the slow cooling and solidification of the lava.

Volumtettes can provide valuable insights into the volcanic history of an area. Their presence can indicate periods of increased volcanic activity or changes in the composition of the magma. They can also pose hazards to surrounding areas, as they can potentially collapse or explode due to the buildup of gas pressure within the lava.

In summary, a volumtette is a small, dome-shaped volcanic mound formed from the extrusion of viscous lava. It is a unique feature that can provide important information about volcanic processes and history.