choices: continental hot spot, ocean-ocean subduction, continental rift, oceanic
ID: 111972 • Letter: C
Question
choices: continental hot spot, ocean-ocean subduction, continental rift, oceanic hot spot, ocean-continent subduction, mid-ocean ridges, continental transform, continent-continent collusion
1.The deepest lake in the world, Lake Baikal, in Siberia formed when fresh water flooded a rift valley. These valleys are associated with what type of plate boundary?
2.
Yellowstone National Park is believed to have a very dangerous volcanic eruption sometime in the near future (near future in geologic time). This large area may erupt because Yellowstone is located above what?
3.
The Himalayan mountain range is associated with what type of plate boundary?
4. Island arcs include Japan, the Philippines, and the Aleutians of Alaska, are associated with what type of plate boundary?
Explanation / Answer
1. Answer is Continental rift
Baikal lake is a rift lake consisting of a series of basins along the zone creating a rift valley. A series of continental rifts collectively called as Baikal rift zone is centered beneath the lake baikal. At a continetal rift boundary plates are diverging away.
2. Answer is Continental hotspot
Yellowstone national park which is characterised by geysers, earthquakes and volcanic eruptions is situated above a continental hotspot which upwells mantle plume. The constant heat from the mantle melts the rocks lying above it forming molten magma close to the earth;s surface. These are termed as hotspots. This hotspots present beneath the yellowstone is responsible for the frequent earthquakesa nd hot geysers present there. Sometimes these molten magma present under the surface due to hotspots may erupt leading to volcanic explosion.
3. Answer is Continent-continent collision
The Mighty Himalayan ranges are formed as result of the collision of two continental plates namely Indian Plate and Eurasian Plate.
4. Answer is Ocean-ocean subduction
When ans oceanic plate and another oceanic plate converges, one oceanic plate subducts beneath the other. In thsi case the line of volcanoes formed in the upper oceanic plate is called as Island arc. When the convergence is between an oceanic and continental palte, volcanic arc results.
Hope this helps
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.