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  2. Volcanic crater - Wikipedia

    en.wikipedia.org/wiki/Volcanic_crater

    Volcanic crater. A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. [1] It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions, molten magma and volcanic gases rise from an underground magma chamber, through a conduit, until they reach the crater's vent ...

  3. Sill (geology) - Wikipedia

    en.wikipedia.org/wiki/Sill_(geology)

    A sill is a concordant intrusive sheet, meaning that it does not cut across preexisting rock beds. Stacking of sills builds a sill complex [1] and a large magma chamber at high magma flux. [2] In contrast, a dike is a discordant intrusive sheet, which does cut across older rocks.

  4. Puʻu ʻŌʻō - Wikipedia

    en.wikipedia.org/wiki/Puʻu_ʻŌʻō

    Puʻu ʻŌʻō (also spelled Pu‘u‘ō‘ō, and often written Puu Oo, pronounced [ˈpuʔu ˈʔoːʔoː], poo-oo-OH-oh) is a volcanic cone on the eastern rift zone of Kīlauea volcano in the Hawaiian Islands. The eruption that created Puʻu ʻŌʻō began on January 3, 1983, and continued nearly continuously until April 30, 2018, making it ...

  5. Mount Mazama - Wikipedia

    en.wikipedia.org/wiki/Mount_Mazama

    Mount Mazama ( Tum-sum-ne in the Native American language Klamath [5]) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. Most of the mountain collapsed following a major eruption approximately 7,700 years ago. The volcano is in Klamath County, in the southern Cascades, 60 miles ...

  6. Volcanic and igneous plumbing systems - Wikipedia

    en.wikipedia.org/wiki/Volcanic_and_igneous...

    Magma emplacement can take place at any depth above the source rock. Magma emplacement is primarily controlled by the internal forces of magma including buoyancy and magma pressure. Magma pressure changes with depth as vertical stress is a function of the depth. Another parameter of magma emplacement is the rate of magma supply.

  7. Phreatomagmatic eruption - Wikipedia

    en.wikipedia.org/wiki/Phreatomagmatic_eruption

    Phreatomagmatic eruptions are volcanic eruptions resulting from interaction between magma and water. They differ from exclusively magmatic eruptions and phreatic eruptions. Unlike phreatic eruptions, the products of phreatomagmatic eruptions contain juvenile (magmatic) clasts.