Volcanic Activity and Structures Practice

Flashcards covering volcano morphologies, eruption styles (Hawaiian, Strombolian, Vulcanian), hydrovolcanism, and regional volcanic case studies in Spain, Germany, and Italy.

Shield Volcano

A broad, gently sloping type of volcano that is the largest in size, built from many thin flows of basaltic lava with low silica and low viscosity.

Cinder (Scoria) Cone

A small, steep-sided, short-lived volcano built almost entirely from loose volcanic fragments called scoria or cinders, formed by explosive bursts of lava.

Composite Volcano (Stratovolcano)

A tall, steep, cone-shaped volcano built from alternating layers of lava flows and pyroclastic material resulting from repeated explosive and quiet eruptions.

Hawaiian Eruption

The lowest intensity eruptive style characterized by gentle, non-explosive, fluid basaltic lava, lava fountains, and long lava flows with little ash.

Strombolian Eruption

A low to moderate intensity eruption style featuring small explosions of bursting gas bubbles that throw blobs of molten lava, cinders, and bombs into the air.

Vulcanian Eruption

A high intensity eruptive style characterized by short, violent explosions, thick ash clouds, dense volcanic ash, blocks, bombs, and pyroclastic material.

Canary Islands Plate Setting

A volcanic region believed to be formed by a mantle hot spot (mantle plume) rather than a plate boundary.

2021 La Palma Eruption

A significant eruption on La Palma that lasted about $50$ years after the previous one, destroying thousands of homes and creating new land by entering the ocean.

Laacher See

A volcanic lake in Germany formed from the remains of a large caldera after a massive explosive eruption emptied a magma chamber and caused the roof to collapse.

Maar

A broad, shallow volcanic crater, often water-filled, produced by hydrovolcanic or phreatomagmatic explosions.

Hydrovolcanism

Volcanic activity occurring when magma contacts groundwater or surface water, causing water to instantly flash to steam and expand explosively.

Fuel-coolant Interaction

A process where hot magma (fuel) meets water (coolant), causing rapid steam expansion and violent explosions that create maars.

Stromboli

A stratovolcano on a convergent boundary known for continuous eruptions and referred to as the "Lighthouse of the Mediterranean."

Mt. Etna

Europe's largest active volcano, categorized as a stratovolcano located at a convergent plate setting.

Mt. Vesuvius

A stratovolcano known for the Plinian eruption that destroyed the cities of Pompeii and Herculaneum.

Santorini

A caldera located at a convergent boundary associated with the Minoan eruption and the legend of Atlantis.

Eyjafjallajökull

A stratovolcano in Iceland that caused significant disruption to global air travel in the year $2010$.

Laki

A fissure volcano in Iceland whose $1783$ eruption caused widespread climate effects and famine.

Tavurvur Volcano

A volcano located in Papua New Guinea used in the lecture to illustrate a Vulcanian eruption style.

Parícutin

A well-known example of a Cinder (Scoria) Cone volcano located in Mexico.