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Central Atlantic magmatic province. The Central Atlantic magmatic province (CAMP) is the Earth's largest continental large igneous province, covering an area of roughly 11 million km 2. It is composed mainly of basalt that formed before Pangaea broke up in the Mesozoic Era, near the end of the Triassic and the beginning of the Jurassic periods.
Marsili. Aeolian arc, including coastline and depth contour lines for every 500 meters. / 39.25000°N 14.39444°E / 39.25000; 14.39444. Marsili is a large undersea volcano in the Tyrrhenian Sea, about 175 kilometers (109 mi) south of Naples. The seamount is about 3,000 m (9,800 feet) tall; its peak and crater are about 450 m below the ...
NOAA exploration video showing remnants of underwater tar volcanoes. Submarine volcanoes are underwater vents or fissures in the Earth 's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for ...
Taurere / Taylor Hill. Scoria cone of Taylors Hill with Māori kūmara pits in left foreground. Taylors Hill (also Te Taurere or officially Taurere / Taylor Hill), [1][2] is a volcano in the Auckland volcanic field. It erupted about 33,000 years ago. [2] Its scoria cone reaches 57 m (187 ft) high.
2; the higher the silica content, the greater the ability of the magma to trap and hold on to gas and water vapor. When high-silica magma rises to the Earth's surface, the trapped gases and vapors can erupt explosively to produce ash clouds and pyroclastic flows that consist of superheated gas, ash and volcanic fragments.
Mechanism of formation. Bimodal volcanism is normally explained as a result of partial melting of the crust, creating granitic magmas, during the emplacement of large volumes of relatively hot basaltic magma from a mantle source. The two magma types then form separate magma chambers giving rise to periodic eruption of both types of lava. [7][8]
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