show more I was exploring a cave in minecraft (the seed is worstseedever if you want to get stuck in the same cave -.-) and I fell down a mini waterfall trying to get some diamonds so I can mine obsidian and I got stuck on this obsidian island in the middle of lava...
Texture determines whether an igneous rock is defined as Intrusive (coarsely crystalline) or Extrusive (finely crystalline). Intrusive Igneous Rocks. 1. Fig. 3.2: Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals.Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.. Fig. 3.2: Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals. Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.
The most common types of plutonic igneous rock are granite, gabbro, or diorite. The central cores of major mountain ranges consist of large bodies of intrusive igneous rocks â also known as batholiths â since they are the result of magma cooling within preexisting solid rock on the surface.