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vitreous or glassy (obsidian)
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Small grained rocks have what texture?
Fine grained rocks are considered aphanitic.
What is the texture of igneous rocks that form far below earths surface?
Course grained texture.
What is the relationship between an igneous rocks texture and where it formed?
The relationship between an igneous rock's texture and where it was formed is that the texture depends on whether or not the rock is an extrusive rock or an intrusive rock. Those two different types of classifications for rocks tell you what the texture will be. For example, Intrusive rocks have a coarse-grained texture like granite and extrusive rocks have a fine-grained texture like basalt.
Describe the textural difference between coarse-grained phaneritic and fine-grained aphaneritic rocks?
Coarse-grained phaneritic rocks have mineral grains that are large enough to be seen with the naked eye, giving them a rough texture. Fine-grained aphaneritic rocks have much smaller mineral grains that are not individually visible, resulting in a smooth or fine texture.
What is the relationship between igneou rocks texture and where it's formed?
The relationship between an igneous rock's texture and where it was formed is that the texture depends on whether or not the rock is an extrusive rock or an intrusive rock. Those two different types of classifications for rocks tell you what the texture will be. For example, Intrusive rocks have a coarse-grained texture like granite and extrusive rocks have a fine-grained texture like basalt.
What factors affect the texture of igneous rock?
The cooling rate of magma is the primary factor that affects the texture of igneous rocks. Rapid cooling results in fine-grained texture, while slow cooling leads to coarse-grained texture. The mineral composition of the magma also influences the texture, with high silica content producing light-colored and fine-grained rocks, and low silica content resulting in dark-colored and coarse-grained rocks.
What are rocks called that are formed when magma cools below the earths surface?
Plutonic rocks, generally coarse grained, interlocking texture, high density. eg. Granite
What is the relationship between igneous rock's texture and where it is formed?
The relationship between an igneous rock's texture and where it was formed is that the texture depends on whether or not the rock is an extrusive rock or an intrusive rock. Those two different types of classifications for rocks tell you what the texture will be. For example, Intrusive rocks have a coarse-grained texture like granite and extrusive rocks have a fine-grained texture like basalt.
What is the relationship between an igneous rock's texture and where it was formed?
The relationship between an igneous rock's texture and where it was formed is that the texture depends on whether or not the rock is an extrusive rock or an intrusive rock. Those two different types of classifications for rocks tell you what the texture will be. For example, Intrusive rocks have a coarse-grained texture like granite and extrusive rocks have a fine-grained texture like basalt.
Does a rocks grain give the rocks its texture?
Yes, a rock's grain size will help determine its texture. The size and arrangement of mineral grains within a rock will affect how the rock feels to the touch. Finer-grained rocks tend to have a smoother texture, while coarser-grained rocks may feel rougher.
What is the most common texture for intrusive rocks?
The most common texture for intrusive rocks is coarse-grained, or phaneritic texture. This texture occurs because intrusive rocks, formed from magma that cools slowly beneath the Earth's surface, allow large crystals to grow. Examples of coarse-grained intrusive rocks include granite and diorite. The slow cooling process results in the visible crystalline structure characteristic of these rocks.
Does a rock's grain give the rock it's texture?
Yes, the size, shape, and arrangement of grains in a rock contribute to its texture. For example, fine-grained rocks have a smoother texture, while coarse-grained rocks have a rougher texture. Other factors such as mineral composition also play a role in determining a rock's texture.
