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If it has broken through the Earth's crust then it would be a igneous extrusion and a volcano can form. If it hasn't complete broke through the crust it would be a igneous intrusion. Depending if the intrusion was concordant or discordant with the bedding planes it would be either a sill or a dyke.
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What is a geological hot spot?
A geological hot spot is where hot magma rises from the earth's mantle, which creates volcanic activity.
What forms when magma slowly rises up?
When magma slowly rises up through the Earth's crust, it can form various types of igneous rock. If it cools and solidifies beneath the surface, it creates intrusive igneous rock, such as granite. If the magma reaches the surface and erupts, it can form extrusive igneous rock, like basalt or pumice, depending on the cooling conditions. Additionally, as magma rises, it can also lead to the formation of geological features like volcanoes and plutons.
What type of plate boundary triggers the formation of active volcanoes as magma rises beneath the surface?
Oceanic-to-Oceanic plate boundary triggers the formation of active volcanoes as magma rises beneath the surface.Transform plate boundaries trigger the formation of active volcanoes as magma rises beneath the surface.
WHAT KIND OF SOURCE IS MAGMA?
Magma is a geological source that consists of molten rock located beneath the Earth's surface. It is formed from the melting of rocks due to high temperatures and pressure in the Earth's mantle. When magma rises to the surface, it can erupt as lava during volcanic activity, contributing to the formation of new land and geological features. Magma also contains dissolved gases and minerals, making it a key source for understanding the Earth's composition and volcanic processes.
What does magma do because it is less dense?
Magma rises toward the Earth's surface because it is less dense than the surrounding solid rock. As it ascends, it can accumulate in magma chambers and may eventually lead to volcanic eruptions if pressure builds sufficiently. This buoyancy allows magma to migrate through cracks and fissures in the crust, contributing to the formation of new landforms and geological features.
What has formed as a result of diverging plates?
As a result of diverging plates, mid-ocean ridges are formed, which are underwater mountain ranges created by volcanic activity as magma rises to the surface. Additionally, this divergence can lead to the formation of rift valleys on land, where the Earth's crust is stretched and thinned. These geological features indicate tectonic activity and play a crucial role in the continual reshaping of the Earth's surface.
What happens to magma that rises though cracks on the seafloor?
When magma rises through cracks on the seafloor, it can result in the formation of underwater volcanic structures like mid-ocean ridges or seamounts. As the magma reaches the surface, it can solidify and create new oceanic crust through a process called seafloor spreading. Eruptions can also produce hydrothermal vents, which support unique ecosystems due to the extreme conditions.
How is a seamount formed and what geological processes contribute to its creation?
A seamount is formed by volcanic activity under the ocean's surface, where magma rises and solidifies to create a mountain. Over time, the seamount can grow as more lava erupts and accumulates. Geological processes like plate tectonics and hotspot volcanism contribute to the formation of seamounts.
Magma and cycle of heating rising cooling and sinking is called a .?
The cycle of heating, rising, cooling, and sinking of magma is called mantle convection. This process drives the movement of tectonic plates and is a key mechanism in the geological activity of the Earth. As magma heats up, it becomes less dense and rises, while cooler, denser magma sinks, creating a continuous cycle that influences volcanic activity and the formation of landforms.
What are columns of rising magma?
Columns of rising magma are known as magma chambers or conduits. They are vertical channels through which magma rises from the Earth's mantle towards the surface. These columns are key components in the formation of volcanic eruptions.
Which type of landform develops at plate boundaries in the ocean magma rises and melts?
At plate boundaries in the ocean where magma rises and melts, mid-ocean ridges develop. These underwater mountain ranges form as tectonic plates pull apart, allowing magma from the mantle to ascend and solidify. This process creates new oceanic crust and can lead to volcanic activity along the ridge. Additionally, this setting can result in the formation of hydrothermal vents, which are unique ecosystems dependent on the heat from the magma.
What is a crack in the ocean floor where magma rises?
A crack in the ocean floor where magma rises is known as a mid-ocean ridge or a tectonic plate boundary, specifically a divergent boundary. Here, tectonic plates move apart, allowing magma from the mantle to ascend and create new oceanic crust as it cools. This process is integral to the formation of new seafloor and can also lead to volcanic activity. Mid-ocean ridges are often characterized by underwater volcanic features and are key sites for geological activity.
