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Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
Is magma extrusive or intrusive?
Magma can be either extrusive or intrusive. Extrusive magma forms on the Earth's surface during volcanic eruptions, while intrusive magma forms below the surface and cools slowly to create intrusive igneous rocks.
Is marble an extrusive or an intrusive rock?
Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.
Is Obsidian an extrusive rock or intrusive rock?
Yes it is extrusive love yall
Igneous rocks are described as intrusive or extrusive based on?
Igneous rocks are described as intrusive or extrusive based on formation. Intrusive rocks forms underneath the earth surface, while extrusive rocks forms on the surface of earth.
Is hematite extrusive or intrusive?
Hematite is commonly found as a sedimentary mineral in deposits like banded iron formations. It is not typically associated with igneous rocks, so it is neither extrusive nor intrusive in the conventional sense.
Are crystals intrusive or extrusive?
extrusive
Is felsite extrusive or intrusive?
Extrusive
Is Plutonic intrusive or extrusive?
Intrusive
Is plutonic intrusive extrusive?
Intrusive
Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
Are fine crystals intrusive or extrusive?
extrusive
Is talc intrusive or extrusive rock?
Talc is formed from the metamorphism of magnesium-rich rocks, such as serpentinite. It is classified as a metamorphic rock, which means it is formed under intense heat and pressure deep within the Earth's crust. Therefore, talc is considered an intrusive rock.
Is porphyry extrusive or intrusive?
Porphyry can be either extrusive or intrusive. Extrusive porphyry forms from lava that cools quickly on the Earth's surface, while intrusive porphyry forms from magma that cools more slowly beneath the surface. Both types of porphyry have distinctive large crystals (phenocrysts) embedded in a fine-grained matrix.
Is basalt an intrusive rock or extrusive rock?
Extrusive. Solidifies above ground level.
Is feldspar extrusive or intrusive?
Feldspar can be found in both extrusive and intrusive igneous rocks. In extrusive rocks, feldspar forms when magma cools and solidifies quickly on the Earth's surface. In intrusive rocks, feldspar forms as magma cools and solidifies slowly beneath the Earth's surface.
What are the main two types of igneous rocks?
Igneous rocks are classified as either extrusive or intrusive. Extrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive.
