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The ‘Soufrière Hills’ volcano, which caused massive displacement in the 1990s, is located in:
The Soufrière Hills volcano is a stratovolcano located on the British Overseas Territory of Montserrat in the Lesser Antilles island arc of the Caribbean. Its catastrophic eruption in the mid-1990s rendered the southern half of the island an "exclusion zone." Geographically, the eruption is famous fRead more
The Soufrière Hills volcano is a stratovolcano located on the British Overseas Territory of Montserrat in the Lesser Antilles island arc of the Caribbean. Its catastrophic eruption in the mid-1990s rendered the southern half of the island an “exclusion zone.” Geographically, the eruption is famous for its massive lava domes and destructive pyroclastic flows that reached the sea. The event significantly changed the island’s geography, creating new coastline through ash deposits. It remains one of the world’s most strictly monitored volcanoes due to its history of sudden, high-intensity eruptions and its impact on human settlement patterns.
See lessVolcanoes that have not erupted for a very long time and show no signs of future activity are called: (A) Active (B) Dormant (C) Extinct (D) Sleeping
An extinct volcano is one that scientists believe will never erupt again. This happens when the volcano is no longer fueled by a magma source. Geographically, this often occurs when tectonic plates shift, moving a volcanic mountain away from its "hotspot" or when a subduction zone becomes inactive.Read more
An extinct volcano is one that scientists believe will never erupt again. This happens when the volcano is no longer fueled by a magma source. Geographically, this often occurs when tectonic plates shift, moving a volcanic mountain away from its “hotspot” or when a subduction zone becomes inactive. Unlike dormant volcanoes, which may still have hot magma deep below, extinct volcanoes are geologically cold. Over time, these peaks lose their characteristic conical shape due to weathering and erosion, eventually leaving behind only hard volcanic remnants like volcanic necks or weathered fertile highlands.
See lessThe ‘Pelean’ type of eruption is geographically most significant for producing:
Pelean eruptions are the most violent category in volcanic geography, named after the 1902 disaster of Mount Pelée. They are characterized by extremely thick, silica-rich magma that creates lava domes. When these domes collapse or are blasted apart, they release a Nuée Ardente—a dense, turbulent cloRead more
Pelean eruptions are the most violent category in volcanic geography, named after the 1902 disaster of Mount Pelée. They are characterized by extremely thick, silica-rich magma that creates lava domes. When these domes collapse or are blasted apart, they release a Nuée Ardente—a dense, turbulent cloud of hot gas and volcanic fragments. These flows can travel at speeds exceeding 100 miles per hour, destroying everything in their path. Unlike vertical ash columns, Pelean eruptions often involve lateral blasts, making them a primary concern for disaster management in densely populated volcanic regions near subduction zones.
See lessA ‘Lahar’ is a geographical hazard specifically involving:
A lahar is a specific geographical hazard where water and volcanic fragments combine to form a high-speed slurry. These mudflows are often triggered by the sudden melting of snow and ice during an eruption or by intense rainfall on unstable ash deposits. Because they follow existing drainage patternRead more
A lahar is a specific geographical hazard where water and volcanic fragments combine to form a high-speed slurry. These mudflows are often triggered by the sudden melting of snow and ice during an eruption or by intense rainfall on unstable ash deposits. Because they follow existing drainage patterns like river valleys, they can impact communities dozens of miles away from the eruptive site. Lahars are incredibly destructive due to their high density and velocity; they can carry boulders and destroy bridges. The 1985 eruption of Nevado del Ruiz in Colombia remains a tragic example of the lethal power of lahars.
See less‘Fissure eruptions’ are most likely to occur in which geographical setting?
Fissure eruptions occur when magma reaches the surface through long linear cracks rather than a single pipe. This is the dominant form of volcanism at mid-oceanic ridges, where tectonic plates diverge. Geographically, these eruptions are responsible for the seafloor spreading process that constantlyRead more
Fissure eruptions occur when magma reaches the surface through long linear cracks rather than a single pipe. This is the dominant form of volcanism at mid-oceanic ridges, where tectonic plates diverge. Geographically, these eruptions are responsible for the seafloor spreading process that constantly renews the ocean floor. On land, fissure eruptions create “flood basalts” that form extensive volcanic plateaus. Because the basaltic lava is highly fluid, it floods the landscape in thin, horizontal layers. This type of volcanic activity is less explosive but geographically significant for building the Earth’s most extensive igneous rock provinces.
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