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Lava flows cool to form extrusive igneous rock. Most lava flows consist of basaltic lava, cooling to form a dark rock called basalt. Some, however, may consist of andesite or, rarely, rhyolite and similar lavas.

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The lava flows of Hawaii are an example of what kind of rock?

pahoehoe or a'a rocks are the most common coming from a lava flow. pahoehoe or a'a rocks are the most common coming from a lava flow. pahoehoe or a'a rocks are the most common coming from a lava flow.


What types of rocks are formed from a quickly cooled lava flow?

Cooled lava produces extrusive igneous rock.


What 'L' is the molten rocks that come from underground?

Lava


What are the names of rocks that harden before they come out of the volcano and the name of rocks that harden after they come out of a volcano?

It is called Lava


How can you use sedimentary in a sentence?

While searching the lava flow, I found sedimentary rocks.


When lava hardens it forms new rock?

Indeed it does! Depending on how fast the lava crystalizes a different rock will be formed. Rocks that form from within the earth (like through a volcanic eruption, lava flow, magma intrusion, ect) are known as igneous rocks. Igneous rocks include granite, basalt, obsidian, andesite, among others. Basalt and obsidian are arguably the most well known rocks formed from a lava flow.


Are all black rocks lava lava rocks?

no, there are more rocks


What type of rocks come out of a lava dome volcano?

Usually rhyolite or dacite.


What are melted rocks called when they come to the surface?

Lava. (When it is underground it is called magma)


Would you expect to find foliated or nonfoliated metamorphic rocks next to a lava flow?

. I would expect to find nonfoliated rock next to a lava flow because the rock can form when rock is subjected to high temperatures. Hornfels, which often forms when magma or lava touches other rock, is nonfoliated.


Scientists divide rocks into groups based on what?

Rocks are grouped by how they are formed. There are 3 types of rocks. Sedimentary, Metamorphic, and Igneous rock. Sedimentary rocks are made from broken down rocks, called sediment, which come from all three rocks. Metamorphic rocks come from existing rocks that are changed by heat and pressure. The Igneous rocks are formed from magma that rose up to the surface, also known as lava. When the lava cools and hardens it forms igneous rocks. That is a rock cycle. Rocks are grouped by how they are formed. There are 3 types of rocks. Sedimentary, Metamorphic, and Igneous rock. Sedimentary rocks are made from broken down rocks, called sediment, which come from all three rocks. Metamorphic rocks come from existing rocks that are changed by heat and pressure. The Igneous rocks are formed from magma that rose up to the surface, also known as lava. When the lava cools and hardens it forms igneous rocks. That is a rock cycle.


What is the Igneous rocks made from?

They are made from cooled lava, because they come from volcano's, and the center of the earth, which has magma (lava) flowing around.no