Home/upsc: volcanoes/Page 2
- Recent Questions
- Most Answered
- Answers
- No Answers
- Most Visited
- Most Voted
- Random
- Bump Question
- New Questions
- Sticky Questions
- Polls
- Followed Questions
- Favorite Questions
- Recent Questions With Time
- Most Answered With Time
- Answers With Time
- No Answers With Time
- Most Visited With Time
- Most Voted With Time
- Random With Time
- Bump Question With Time
- New Questions With Time
- Sticky Questions With Time
- Polls With Time
- Followed Questions With Time
- Favorite Questions With Time
Explore the myriad of intrusive landforms that emerge from volcanic processes.
Volcanic processes are dynamic geological phenomena that shape the Earth's surface through the eruption of molten rock, ash, and gases. These processes give rise to both extrusive and intrusive landforms. Extrusive landforms, like conical hills, form outside the Earth's surface, while intrusive landRead more
Volcanic processes are dynamic geological phenomena that shape the Earth’s surface through the eruption of molten rock, ash, and gases. These processes give rise to both extrusive and intrusive landforms. Extrusive landforms, like conical hills, form outside the Earth’s surface, while intrusive landforms, such as batholiths, develop within the Earth’s crust.
Intrusive Landforms that Emerge from Volcanic Processes
Intrusive landforms are structures that result from the solidification of magma beneath the Earth’s surface. They can take various shapes and sizes, each with its own unique characteristics. Different such landforms can be explained as follows:
Understanding this myriad of intrusive landforms emerging from volcanic processes not only provides insights into the geological history of a region but also plays a crucial role in various scientific fields, including geology, mineral exploration, and even geothermal energy production.
See lessDefine volcanic hotspots and expound upon their key characteristics.
Hotspots or volcanic activities are sources of volcanic eruptions from the Earth's interior or deep magma which do not result from its plate tectonics movements. This is because they remain fixed as it moves over them leading to a line of volcanic islands or mountains through many geological eras. Read more
Hotspots or volcanic activities are sources of volcanic eruptions from the Earth’s interior or deep magma which do not result from its plate tectonics movements. This is because they remain fixed as it moves over them leading to a line of volcanic islands or mountains through many geological eras.
Features:
Examples:
Hawaiian Hotspot, Central Pacific Ocean
Yellowstone Hotspot, Western United States
Iceland Hotspot, North Atlantic Ocean
See lessGive an account of the global distribution of volcanoes and explain why they are mainly concentrated along the Pacific Ring of Fire.
Answer: A volcano is a rupture in the crust of the Earth where gases, ashes, and molten lava escape from a magma chamber below the crust. The process of eruption of volcanoes is called Volcanism. Global distribution of volcanoes: Volcanoes are located in a fairly defined pattern around the world, moRead more
Answer: A volcano is a rupture in the crust of the Earth where gases, ashes, and molten lava escape from a magma chamber below the crust. The process of eruption of volcanoes is called Volcanism. Global distribution of volcanoes: Volcanoes are located in a fairly defined pattern around the world, mostly associated with the weaker zones of the earth’s crust and generally overlap with zones of seismic activities like earthquakes. They also occur along coastal mountain ranges, as off-shore islands, and in the midst of the oceans, but there are few in the interiors of continents. The main volcanic belts are as under: Circum-Pacific Belt: It includes the volcanoes of the eastern and western coastal areas of the Pacific Ocean. This belt is also known as the Ring of Fire of the Pacific Ocean. Most of the high volcanic cones and volcanic mountains are found in the Circum-Pacific Belt. Examples include Cotopaxi in the Andes (the highest volcanic mountain in the world), Fujiyama (Japan) Shasta, Rainier, and Mt. St Helena (USA).
Mid-Continental Belt: These are volcanoes of the Alpine mountains and the Mediterranean Sea. The volcanic eruptions are caused due to the convergence and collision of the Eurasian plate and the African and Indian plates. Examples include Stromboli, Vesuvius, Etna, etc. Mid-Atlantic Belt: It includes the volcanoes along the mid-Atlantic ridge which is the divergent plate zone. They are mainly of the fissure eruption type. Iceland is the most active volcanic area. As per the US Geological Survey, there are around 1,350 potentially active volcanoes worldwide and 75% of them are found along the Circum-Pacific Belt or the Ring of Fire. Also, about 90 percent of the world’s earthquakes occur here. The abundance of volcanoes along the Ring of Fire is caused by:
The entire Pacific Ring of Fire has active volcanoes except at some gaps in the Ring such as at the San Andreas Transform plate boundary, where the Pacific plate and the North American plate move sideways. This type of boundary generates a large number of shallow earthquakes as tension in the Earth’s crust builds up and is released, but sufficient magma is not formed to create volcanic eruptions.
See less