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Questions and Answers
Igneous rocks are products of solidification of molten material originating from the earth's depth. True or false?
Igneous rocks are products of solidification of molten material originating from the earth's depth. True or false?
True
Rocks forming from magma are fine-grained and smooth. True or false?
Rocks forming from magma are fine-grained and smooth. True or false?
False
Regional metamorphic rocks are characterized by non-foliated texture. True or false?
Regional metamorphic rocks are characterized by non-foliated texture. True or false?
False
Felsic (Acidic) igneous rocks originate from lava. True or false?
Felsic (Acidic) igneous rocks originate from lava. True or false?
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Mafic (Basic) igneous rocks are coarse-grained and rough. True or false?
Mafic (Basic) igneous rocks are coarse-grained and rough. True or false?
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Partial melting occurs when high-grade metamorphic rocks are subjected to more pressure without increasing depth. True or false?
Partial melting occurs when high-grade metamorphic rocks are subjected to more pressure without increasing depth. True or false?
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Igneous rocks forming from lava are fine-grained and smooth. True or false?
Igneous rocks forming from lava are fine-grained and smooth. True or false?
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Metamorphic rocks are products of solidification of molten material. True or false?
Metamorphic rocks are products of solidification of molten material. True or false?
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Al-rich sedimentary rocks such as shale and claystone can be sources for regional metamorphic rocks. True or false?
Al-rich sedimentary rocks such as shale and claystone can be sources for regional metamorphic rocks. True or false?
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Foliated texture is characteristic of metamorphic rocks. True or false?
Foliated texture is characteristic of metamorphic rocks. True or false?
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Study Notes
Igneous Rocks
- Igneous rocks form from the solidification of molten material known as magma or lava originating from the Earth's depth.
- Rocks formed from magma tend to be coarse-grained and rough due to slow cooling, while those formed from lava are generally fine-grained and smooth due to rapid cooling.
Metamorphic Rocks
- Regional metamorphic rocks can exhibit both foliated and non-foliated textures; foliated textures are common due to directional pressure during formation.
- Partial melting can occur when high-grade metamorphic rocks are subjected to increased pressure without an increase in depth, leading to the formation of magma.
- Metamorphic rocks are not products of solidification; they result from the transformation of existing rock types through heat, pressure, and chemical processes.
Sedimentary Rocks
- Al-rich sedimentary rocks, including shale and claystone, can serve as sources for regional metamorphic rocks through the process of metamorphism.
- Foliated texture, characterized by layers or bands, is a distinctive feature of many metamorphic rocks formed under directional pressure.
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Description
Test your knowledge on the rock cycle and rock types in physical geology with this quiz. Designed for students studying Petroleum & Mining Geology, Biotechnology, and Nanotechnology programs.