blasto-
blasto- A prefix applied to textural terms and used to indicate the partial or complete replacement of a textural element in the original rock by crystals which have grown during metamorphic recrystallization. For example, the term ‘blastoporphyritic’ refers to a porphyritic igneous rock (see PORPHYRY) which has undergone metamorphism, and in which the phenocrysts remain as recognizable textural relicts even though each has been replaced by an aggregate of new metamorphic minerals.
More From encyclopedia.com
Iron Ores , Rocks
Rocks are composed of minerals, which are natural inorganic (nonliving) substances with specific chemical compositions and structures. A rock m… Metamorphic Rocks , Metamorphic rock is rock that has changed from one type of rock into another. The word metamorphic (from Greek) means “of changing form.” Metamorphic… Igneous Rocks , Igneous rocks are formed by the cooling and hardening of molten magma. The word igneous comes from the Latin word igneus, meaning fire, and there are… Rock , rock1 / räk/ • n. 1. the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underly… Country Rock , Country rock
The term country rock refers to a body of rock that receives or hosts an intrusion of a viscous geologic material. Intrusions into count… Aphanitic , Aphanitic
Crystalline rocks with mineral grains that cannot be distinguished from one another without magnification have an aphanitic igneous texture…
About this article
blasto-
All Sources -
You Might Also Like
NEARBY TERMS
blasto-