Table of Contents
What geological event led to the formation of the rocks that make up Shiprock?
What geologic event led to the formation of the rocks that make up Shiprock? The rocks in Shiprock formed when magma solidified in the neck of an old volcano.
Which of the following best describes how flood basalts form?
Terms in this set (24) Which of the following best describe how flood basalts form? Flood basalts form as a result of an eruption above a mantle plume.
Which volcanic landform is created by the collapse of the summit of a volcano?
Calderas form when the summit of a volcano collapses.
What geologic process is related to caldera formation?
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
Which of the following scenarios best describes how the Hawaiian islands formed in the Pacific Ocean View Available hint S?
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
How did ridges around Shiprock form?
How did the ridges around Shiprock form? The rocks in Shiprock formed when magma solidified in the neck of an old volcano. They are old dikes radiating from the main neck of the volcano. All of the lava and pyroclastic material and some of the volcanic neck were eroded.
What type of plate boundary is associated with flood basalts?
convergent plate boundaries
What are flood basalts quizlet?
Flood basalts – large basalt lava Flows that cover vast areas.
How does a flood basalt form?
Flood basalt is formed by an eruption or series of eruptions of large volcanic episodes that cover vast stretches of land or ocean floor with flows of mafic igneous rocks (basalt lava flows).
Which volcanic landform is created by the collapse of the summit of a volcano quizlet?
Calderas form when the summit of a volcano collapses.
What type of volcano has a collapsed summit?
Calderas
When the walls of a volcano collapse What landform is created?
Craters and Calderas Calderas are much larger depressions, circular to elliptical in shape, with diameters ranging from 1 km to 50 km. Calderas form as a result of collapse of a volcanic structure. The collapse results from evacuation of the underlying magma chamber.
What is the result of the collapse of a volcano?
A caldera is a volcanic feature formed by the collapse of a volcano into itself, making it a large, special form of volcanic crater. A caldera collapse is usually triggered by the emptying of the magma chamber beneath the volcano, as the result of a large volcanic eruption.
What geological process is related to caldera formation quizlet?
What geologic process is related to caldera formation? Calderas form when the summit of a volcano collapses.
How does a caldera form quizlet?
How does a caldera form? Enormous eruptions may empty the main vent and the magma chamber beneath a volcano.The mountain becomes a hollow shell. With nothing to support it, the top of the mountain collapses inward, forming a caldera.
What is caldera based on?
A caldera is large basin-shaped volcanic depression commonly formed when magma is withdrawn or erupted from a shallow underground reservoir. The removal of large volumes of magma results in loss of structural support for the overlying rock, thereby leading to collapse of the ground.
What steps are involved in forming a caldera?
Calderas are some of the most spectacular features on Earth. They are large volcanic craters that form by two different methods: 1) an explosive volcanic eruption; or, 2) collapse of surface rock into an empty magma chamber.
Which of the following scenarios best describes how the Hawaiian Islands formed in Pacific Ocean?
Which of the following scenarios best describes how the Hawaiian Islands formed in the Pacific Ocean? Magma generated from a hot spot burned through the overlying plate to create volcanoes. The volcanic islands in the above figure were created as the tectonic plate passed over a hot spot in the mantle.
Which of the following best describes how the Hawaiian Islands were formed?
The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving. So, as the plate moved over the hot spot, the string of islands that make up the Hawaiian Island chain were formed.
How did crater lake form and how does it compare to the calderas of shield volcanoes?
Crater Lake formed when a composite cone volcano erupted and the force of the explosion collapsed the crater into a caldera. Rainfall filled the depression, generating a lake. Calderas on shield volcanoes tend to form more gradually due to magma loss from a shallow magma chamber.
Which description best fits the volcanoes of the Hawaiian Islands?
Hawaii’s main volcanoes are shield volcanoes, which produce lava flows that form gently sloping, shield-like mountains. A good example is Maunaloa, the most massive mountain on earth, deceptively covering half of Hawaii Island.
What type of structure is Shiprock New Mexico and how did it form?
What geologic event led to the formation of the rocks that make up Shiprock? The rocks in Shiprock formed when magma solidified in the neck of an old volcano.
What are flood basalts associated with?
Flood Basalts are high volume eruptions that flood vast areas of the Earth, covering broad regions with flat lying lava surfaces. Continental flood basalt eruptions, which degas to the atmosphere when erupted, are associated with ecosystem mass extinctions
How flood basalts are formed?
Flood basalt is formed by an eruption or series of eruptions of large volcanic episodes that cover vast stretches of land or ocean floor with flows of mafic igneous rocks (basalt lava flows). A flood-basalt province is popularly known as Trap (Deccan Traps in India).
What causes continental flood basalts?
A flood basalt is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the earth via a mantle plume.
