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What features of metamorphic rocks are unlikely to be found in sedimentary rocks?
Foliation, a layered or banded texture, is a common feature of metamorphic rocks but not typically found in sedimentary rocks. Metamorphic rocks can also have mineral reorganization and recrystallization that are not commonly seen in sedimentary rocks. Additionally, metamorphic rocks may exhibit distinct metamorphic minerals like garnet, staurolite, or kyanite, which are unlikely to be found in sedimentary rocks.
Is felsic porphyritic extrusive?
Felsic porphyritic rocks can be extrusive if they are formed from volcanic eruptions. These rocks have a high silica content and typically contain large crystals (phenocrysts) embedded in a fine-grained matrix. Examples of felsic porphyritic extrusive rocks include rhyolite and dacite.
This igneous texture is characterized by two distinctively different crystal sizes?
The igneous texture characterized by two distinctively different crystal sizes is known as porphyritic texture. Porphyritic rocks have larger crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass), indicating two different stages of cooling within the magma.
How can sedimentary rocks be classified?
Sedimentary rocks can be classified based on their composition, texture, and the way they were formed. Common classifications include clastic, chemical, and organic sedimentary rocks. Clastic rocks are made of fragments of other rocks, while chemical rocks form from dissolved minerals. Organic rocks are made from the remains of plants and animals. Texture can also help classify sedimentary rocks, such as fine-grained, coarse-grained, or conglomerate.
What are the crystal structures in porphyritic rocks?
Porphyritic rocks typically have a porphyritic texture, where large crystals (phenocrysts) are embedded in a finer-grained matrix (groundmass). The crystal structures within porphyritic rocks can vary depending on the minerals present, but common examples include feldspar, quartz, and mica minerals. These minerals can form a variety of crystal structures such as monoclinic, triclinic, or hexagonal depending on their composition and arrangement of atoms.
Are sedimentary rocks that form when minerals come out of a solution classified as porphyritic?
No. I believe they are called chemical precipitate sedimentary rocks. Yes, I'm sure they're called that. Absolutely! Porphyritic is a term usually applied to igneous rocks, having to do with mineral formation and rock texture.
What Mineral alignment in a metamorphic rock usually gives the rock a porphyritic texture?
A porphyritic texture can be a feature of igneous rocks, but 'porphyritic' is not used to describe metamorphic rock texture. Metamorphic rocks can be foliated or non-foliated, terms used to describe mineral alignment or banding, or the lack thereof.
Are sedimentary rocks classified by foliated and nonfoliated?
No, sedimentary rocks are classified based on their grain size, composition, and texture, not by whether they are foliated or nonfoliated. Foliation is a feature typically found in metamorphic rocks, not sedimentary rocks.
What is the texture of inorganic land derived sedimentary rocks?
what is the texture of all inorganic land derived sedimentary rocks
What features of metamorphic rocks are unlikely to be found in sedimentary rocks?
Foliation, a layered or banded texture, is a common feature of metamorphic rocks but not typically found in sedimentary rocks. Metamorphic rocks can also have mineral reorganization and recrystallization that are not commonly seen in sedimentary rocks. Additionally, metamorphic rocks may exhibit distinct metamorphic minerals like garnet, staurolite, or kyanite, which are unlikely to be found in sedimentary rocks.
What is the texture of all inorganic land derived sedimentary rocks?
what is the texture of all inorganic land derived sedimentary rocks
What is the universal feature of sedimentary rocks?
The presence of layers is the universal feature of all sedimentary rock.
What are porphyritic rocks?
Porphyritic Rocks are rocks that have big and small crystal's like the Igneous Rock "Andesite".
Is felsic porphyritic extrusive?
Felsic porphyritic rocks can be extrusive if they are formed from volcanic eruptions. These rocks have a high silica content and typically contain large crystals (phenocrysts) embedded in a fine-grained matrix. Examples of felsic porphyritic extrusive rocks include rhyolite and dacite.
This igneous texture is characterized by two distinctively different crystal sizes?
The igneous texture characterized by two distinctively different crystal sizes is known as porphyritic texture. Porphyritic rocks have larger crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass), indicating two different stages of cooling within the magma.
What is the best-known feature of sedimentary rocks?
Bedding
How do you determine the age of a porphyritic texture?
You cannot determine the age of a "texture". There are numerous methods for dating the age of rocks. Go to Geology.com and search for rock dating methods.
