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How is magma and lava similar?
Lava is just magma that has reached the surface.
What are the characteristics of dykes?
Dykes are geological formations characterized by vertical or near-vertical walls of rock that cut across existing strata. They are typically formed from molten magma that intrudes into cracks in the surrounding rock and solidifies. Dykes can vary in composition, size, and orientation, and they often exhibit features such as a fine-grained texture due to rapid cooling. Additionally, they can serve as indicators of tectonic activity and are commonly associated with volcanic regions.
What type of magma does mount Pinatubo have?
Mount Pinatubo primarily erupts dacitic magma.
What was obsidian before it was obsidian?
It was liquid rock (magma) which solidified after an extrusion or eruption. Crustal rocks can re-dissolve into magma during subduction of oceanic crust.
What does a fine grianed rock form from magma or laver?
Lava.
What is magma that squeezes into vertical cracks between rocks and then hardens is called?
The magma that squeezes into vertical cracks between rocks and then hardens is called a dike. Dikes are tabular bodies of igneous rock that cut across the existing rock layers.
What is magma that hardens after being forced into a crack across rock?
Magma that hardens after being forced into a crack across rock is called a dike.
What is Magma hardened in a horizontal crack?
Magma that hardens in a horizontal crack typically forms a thin, sheet-like intrusion called a sill. Sills are created when magma is injected parallel to the existing rock layers. As the magma cools and solidifies, it forms a horizontal layer of igneous rock within the crack.
What is formed when magma that is squeezed into a generally vertical crack that cuts across layers and hardens?
That would be a type of igneous intrusion known as a dike.
What magma hardens in a horizontal crack?
Commonly referred to as a sill.
When magma hardens inside earths crust it can form vertical?
sills
Formed when magma is squeezed into horizontal crack between layers of rock and hardens undergroud?
It forms a sill.
When magma hardens inside the earths crust it can form vertical what and horizontal sills?
When magma hardens inside the Earth's crust, it can form vertical columns known as dikes, and horizontal layers called sills. Dikes form when magma cuts through pre-existing rock layers, while sills are formed when magma intrudes between existing rock layers.
What landform is created when magma squeezes between rock layers to forma hardened slab of rock?
If vertical, a dyke; if horizontal, a sill.
What is a narrow almost vertical crack in the crust that magma rises to the surface through?
eruption
Magma squeezed into a horizontal crack between rock layers is?
when magma is squeezed into horizontals craks are called sill
What rocks form when magma cools and hardens?
Igneous rock is what forms when magma cools and hardens.
