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.