Meanders are surface features formed by the kinetic energy of flowing water in mature river systems. In contrast, sills and dikes are intrusive volcanic features where magma solidifies within crustal cracks. Lava plateaus and plains are extrusive features formed by "fissure eruptions," where highlyRead more
Meanders are surface features formed by the kinetic energy of flowing water in mature river systems. In contrast, sills and dikes are intrusive volcanic features where magma solidifies within crustal cracks. Lava plateaus and plains are extrusive features formed by “fissure eruptions,” where highly fluid basaltic lava spreads over vast areas, such as the Deccan Traps in India. Because meanders rely on external atmospheric and hydraulic processes, they belong to the category of exogenic landforms, whereas the other options are products of magmatic or volcanic processes.
While craters and calderas are topographic depressions formed by eruptions and geysers are hydrothermal vents heated by magma, a fjord is purely a product of ice. During the ice ages, massive glaciers carved "U-shaped" valleys deep into the Earth's crust. When the glaciers melted and sea levels roseRead more
While craters and calderas are topographic depressions formed by eruptions and geysers are hydrothermal vents heated by magma, a fjord is purely a product of ice. During the ice ages, massive glaciers carved “U-shaped” valleys deep into the Earth’s crust. When the glaciers melted and sea levels rose, these valleys were flooded by the ocean. Fjords are characteristic of coastlines like Norway, Chile and New Zealand. They represent the power of erosional glaciation, distinguishing them fundamentally from the endogenic (internal) forces that create volcanic landforms.
When magma rises toward the surface but fails to erupt, it cools within the crust, forming Intrusive Igneous Bodies. A dike is specifically a discordant body, meaning it cuts across the "bedding planes" of the surrounding country rock. Dikes often act as the "plumbing system" for volcanoes, feedingRead more
When magma rises toward the surface but fails to erupt, it cools within the crust, forming Intrusive Igneous Bodies. A dike is specifically a discordant body, meaning it cuts across the “bedding planes” of the surrounding country rock. Dikes often act as the “plumbing system” for volcanoes, feeding magma to vents. After millions of years of erosion, the surrounding softer rock may wear away, leaving the harder volcanic dike standing as a prominent, wall-like ridge in the landscape. This makes them essential features for geologists studying ancient volcanic plumbing.
The formation of a caldera is one of the most violent events in geology. During a "Super-eruption," so much material is ejected that the volcano effectively loses its foundation. the summit then collapses into the partially emptied magma reservoir below. This creates a circular depression that can bRead more
The formation of a caldera is one of the most violent events in geology. During a “Super-eruption,” so much material is ejected that the volcano effectively loses its foundation. the summit then collapses into the partially emptied magma reservoir below. This creates a circular depression that can be dozens of kilometers wide. Calderas are found at the sites of the world’s most powerful volcanoes, such as Toba, Santorini and Yellowstone. They are often the sites of “resurgent domes,” where new magma begins to push the caldera floor back up.
Tectonic activity usually occurs at the edges of plates. Australia is situated in the center of the Indo-Australian plate, making it geologically stable. Unlike Africa (Rift Valley), Europe (Etna/Vesuvius) or Antarctica (Mount Erebus), Australia has no subduction zones or active rifts to generate frRead more
Tectonic activity usually occurs at the edges of plates. Australia is situated in the center of the Indo-Australian plate, making it geologically stable. Unlike Africa (Rift Valley), Europe (Etna/Vesuvius) or Antarctica (Mount Erebus), Australia has no subduction zones or active rifts to generate fresh magma. The last volcanic eruption on the Australian mainland occurred at Mount Schank and Mount Gambier about 5,000 years ago. Today, the continent is considered a “volcanic desert,” though it still experiences minor intraplate earthquakes due to internal stresses within the crust.
Which landform is not formed by volcanic activity? (A) Sill and dike (B) Meander (C) Lava plateau (D) Lava plain
Meanders are surface features formed by the kinetic energy of flowing water in mature river systems. In contrast, sills and dikes are intrusive volcanic features where magma solidifies within crustal cracks. Lava plateaus and plains are extrusive features formed by "fissure eruptions," where highlyRead more
Meanders are surface features formed by the kinetic energy of flowing water in mature river systems. In contrast, sills and dikes are intrusive volcanic features where magma solidifies within crustal cracks. Lava plateaus and plains are extrusive features formed by “fissure eruptions,” where highly fluid basaltic lava spreads over vast areas, such as the Deccan Traps in India. Because meanders rely on external atmospheric and hydraulic processes, they belong to the category of exogenic landforms, whereas the other options are products of magmatic or volcanic processes.
See lessWhich of the following landforms is not related to volcanic activity? (A) Geyser (B) Fjord (C) Crater (D) Caldera
While craters and calderas are topographic depressions formed by eruptions and geysers are hydrothermal vents heated by magma, a fjord is purely a product of ice. During the ice ages, massive glaciers carved "U-shaped" valleys deep into the Earth's crust. When the glaciers melted and sea levels roseRead more
While craters and calderas are topographic depressions formed by eruptions and geysers are hydrothermal vents heated by magma, a fjord is purely a product of ice. During the ice ages, massive glaciers carved “U-shaped” valleys deep into the Earth’s crust. When the glaciers melted and sea levels rose, these valleys were flooded by the ocean. Fjords are characteristic of coastlines like Norway, Chile and New Zealand. They represent the power of erosional glaciation, distinguishing them fundamentally from the endogenic (internal) forces that create volcanic landforms.
See lessWhat is a dike? (A) Coastal landform (B) Glacier-formed landform (C) Volcanic extrusive landform (D) Volcanic intrusive landform
When magma rises toward the surface but fails to erupt, it cools within the crust, forming Intrusive Igneous Bodies. A dike is specifically a discordant body, meaning it cuts across the "bedding planes" of the surrounding country rock. Dikes often act as the "plumbing system" for volcanoes, feedingRead more
When magma rises toward the surface but fails to erupt, it cools within the crust, forming Intrusive Igneous Bodies. A dike is specifically a discordant body, meaning it cuts across the “bedding planes” of the surrounding country rock. Dikes often act as the “plumbing system” for volcanoes, feeding magma to vents. After millions of years of erosion, the surrounding softer rock may wear away, leaving the harder volcanic dike standing as a prominent, wall-like ridge in the landscape. This makes them essential features for geologists studying ancient volcanic plumbing.
See lessWhat is a caldera associated with? (A) Volcanoes (B) Faults (C) Glaciers (D) Earthquakes
The formation of a caldera is one of the most violent events in geology. During a "Super-eruption," so much material is ejected that the volcano effectively loses its foundation. the summit then collapses into the partially emptied magma reservoir below. This creates a circular depression that can bRead more
The formation of a caldera is one of the most violent events in geology. During a “Super-eruption,” so much material is ejected that the volcano effectively loses its foundation. the summit then collapses into the partially emptied magma reservoir below. This creates a circular depression that can be dozens of kilometers wide. Calderas are found at the sites of the world’s most powerful volcanoes, such as Toba, Santorini and Yellowstone. They are often the sites of “resurgent domes,” where new magma begins to push the caldera floor back up.
See lessWhich continent has no volcanoes?
Tectonic activity usually occurs at the edges of plates. Australia is situated in the center of the Indo-Australian plate, making it geologically stable. Unlike Africa (Rift Valley), Europe (Etna/Vesuvius) or Antarctica (Mount Erebus), Australia has no subduction zones or active rifts to generate frRead more
Tectonic activity usually occurs at the edges of plates. Australia is situated in the center of the Indo-Australian plate, making it geologically stable. Unlike Africa (Rift Valley), Europe (Etna/Vesuvius) or Antarctica (Mount Erebus), Australia has no subduction zones or active rifts to generate fresh magma. The last volcanic eruption on the Australian mainland occurred at Mount Schank and Mount Gambier about 5,000 years ago. Today, the continent is considered a “volcanic desert,” though it still experiences minor intraplate earthquakes due to internal stresses within the crust.
See less