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What is a dark greenish gray extrusive igneous rocks?
Basalt is most probably what you are looking for.
What is dark fine-textured rock?
Could be basalt, an extrusive igneous rock.
Why are extrusive rocks dark in color?
Extrusive rocks are dark in color because they cool quickly on the Earth's surface, preventing large mineral crystals from forming. The rapid cooling traps small mineral grains and results in a fine-grained texture, which gives the rock its dark appearance. Additionally, the presence of dark-colored minerals, such as basalt or amphibole, contributes to the overall dark color of extrusive rocks.
Is scoria a sedimentary rock?
No, scoria is not a sedimentary rock. Scoria is an extrusive igneous rock that forms when magma is rapidly cooled and solidified on the Earth's surface. It is typically dark-colored and has a vesicular texture due to the presence of gas bubbles that were trapped during the rapid cooling process.
What property is common to most dark-colored igneous rocks?
Most dark-colored igneous rocks are mafic, which means they are rich in minerals like pyroxene, olivine, and amphibole. These minerals give the rocks their dark color due to higher iron and magnesium content. Additionally, dark-colored igneous rocks are typically extrusive, forming from rapid cooling at the Earth's surface.
Is a gabbro a intrusive rock or a extrusive rock?
it is an intrusive igneous rock with composition equivalent of basalt.it is dark colored due to high concentration of dark minerals;olivine,biotite,hornblende.
What is dark colored rocks called?
igneous
What is a dark fine grained rock called?
A dark fine-grained rock is typically referred to as basalt. It is an igneous rock that forms from the rapid cooling of lava at or near the Earth's surface. Basalt is often dark in color due to its high iron and magnesium content.
What are dark colored often extrusive igneous rocks containing iron magnesium or calcium?
They are referred to as mafic, a word representing their magnesium and iron content.
What type of rock forms when lava cools very quickly?
igneous with small crystals. Extrusive igneous rock forms from the solidification of lava. Rocks such as rhyolite, pumice, obsidian, and basalt. Igneous rocks are formed by magma (inside the earth) or lava (outside earth) that cools and hardens. Extrusive rocks are rocks thathave exited the earths surface.
What type of rock is formed as a result of lava cooling quickly?
The type of rock formed from lava cooling quickly is called basalt. Basalt is a fine-grained igneous rock that is commonly found in volcanic regions and has a dark color due to its rapid cooling process.
What color are the majority of igneous rocks made from melted rocks near earth's surface?
The majority of igneous rocks made from melted rocks near Earth's surface are typically dark in color, such as black, dark gray, or dark green. This is due to the presence of minerals like olivine, pyroxene, and amphibole that create these dark hues in the rocks.
