Where are shield volcanoes formed?

Shield volcanoes are formed by lava flows of low viscosity - lava that flows easily. Consequently, a volcanic mountain having a broad profile is built up over time by flow after flow of relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano.
A.

What plate boundary is a shield volcano on?

Shield volcanoes are usually found at constructive or tensional boundaries. They are formed by eruptions of thin, runny lava. Eruptions tend to be frequent but relatively gentle.
  • What type of plate boundary formed the Himalayan mountains?

    The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.
  • What type of plate boundary do most volcanoes occur along?

    There are three main places where volcanoes originate: Hot spots, Divergent plate boundaries (such as rifts and mid-ocean ridges), and. Convergent plate boundaries (subduction zones)
  • What is a divergent plate boundary?

    In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
B.

What plate boundary is a stratovolcano on?

Stratovolcanoes are common at subduction zones, forming chains and clusters along plate tectonic boundaries where oceanic crust is drawn under continental crust (continental arc volcanism, e.g. Cascade Range, central Andes, Campania) or another oceanic plate (island arc volcanism, e.g. Japan, Philippines, Aleutian
  • What plate boundary is a stratovolcano on?

    Stratovolcanoes are common at subduction zones, forming chains and clusters along plate tectonic boundaries where oceanic crust is drawn under continental crust (continental arc volcanism, e.g. Cascade Range, central Andes, Campania) or another oceanic plate (island arc volcanism, e.g. Japan, Philippines, Aleutian
  • How is a shield volcano formed?

    Shield volcanoes are formed by lava flows of low viscosity - lava that flows easily. Consequently, a volcanic mountain having a broad profile is built up over time by flow after flow of relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano.
  • Which types of plate boundaries are associated with volcanic activity?

    Volcanoes are associated with three types of tectonic structures: convergent plate boundaries, divergent plate boundaries and hot spots. California has all three. The SAF is a transform plate boundary (strike slip fault) and so is not accompanied by volcanic activity.
C.

What is the tectonic setting of Mt St Helens?

Mt St Helens is a major stratovolcano in the Cascades Range, all of which have formed as a result of the ongoing subduction of the Juan de Fuca tectonic plate beneath the western coast of North America.
  • Is Mt St Helens a divergent boundary?

    Mount St. Helens is located near the Juan de Fuca and North American plate boundary in the Cascade Range . This is an image showing the convergent plate boundary between the Juan de Fuca plate and the North American plate.
  • What type of plate boundary is the San Andreas Fault?

    The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal).
  • How often does Mount St Helens erupt?

    Some volcanoes erupt very often (and some like Kilauea almost never stop). On the other hand, some volcanoes are inactive for very long periods of time between eruptions. For example Mt. St. Helens erupted in the late 1800's and then again in 1980.

Updated: 3rd October 2019

Rate This Answer

5 / 5 based on 2 votes.