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When most of the grains are Euhedral the texture of rock is called?

When most of the grains are Euhedral the texture of rock is called?

Fabric refers to the mutual relationship between the grains. Three types of fabric are commonly referred to: If most of the grains are euhedral – that is they are bounded by well-formed crystal faces. The fabric is said to be idomorphic granular.

What does granular texture mean?

A rock texture resulting from the aggregation of mineral grains of approx. equal size. The term may be applied to a sedimentary or metamorphic rock, but is esp. used to describe an equigranular, holocrystalline igneous rock whose particles range in diameter from 0.05 to 10 mm.

What is a type of igneous rock that is granular in texture?

Many fine-grained allotriomorphic-granular rocks are more simply termed sugary, saccharoidal, or aplitic.

What is the significance of a phaneritic coarse grained texture for the cooling history of the magma igneous rock?

Coarse-grained textures generally indicate magmas that slowly cooled deep underground. Slow cooling gives crystals enough time to grow to easily seen sizes (i.e., larger than 1 mm).

What is granular detail?

Granular data is detailed data, or the lowest level that data can be in a target set. It refers to the size that data fields are divided into, in short how detail-oriented a single field is.

What do you mean granular?

Definition of granular 1 : consisting of or appearing to consist of granules : grainy. 2 : finely detailed granular reports.

What is Euhedral in geology?

Euhedral crystals (also known as idiomorphic or automorphic crystals) are those that are well-formed, with sharp, easily recognised faces.

What is granular rock?

Granular – This describes a metamorphic rock consisting of interlocking equant crystals (granules), almost entirely of one mineral. A granular texture is developed if a rock’s chemical composition is close to that of a particular mineral.

What is a phaneritic texture in igneous rocks?

PHANERITIC TEXTURE – Igneous rocks with large, visible crystals because the rock formed slowly in an underground magma chamber. PORPHYRITIC TEXTURE – an igneous rock in which PHENOCRYSTS (large crystals) are surrounded by a fine groundmass (very small crystals).

What does phaneritic texture mean in geology?

These textures are: Phaneritic – This texture describes a rock with large, easily visible, interlocking crystals of several minerals. The crystals are randomly distributed and not aligned in any consistent direction.

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