Asked by Andrew Rainey on May 09, 2024
Verified
Which of the following igneous rocks would be formed by the fastest cooling?
A) very coarse granite pegmatite
B) coarse granite
C) medium-grained granite
D) fine-grained granite
E) volcanic glass
Igneous Rocks
Rocks formed from the cooling and solidification of molten magma or lava.
Volcanic Glass
A shiny and smooth rock formed when molten lava cools rapidly without crystallizing.
Cooling
The process of losing heat, leading to a decrease in temperature; can refer to geologic formations solidifying from molten states.
- Grasp the factors influencing the texture of igneous rocks, including cooling rates.
Verified Answer
IA
Iyanu AjibadeMay 13, 2024
Final Answer :
E
Explanation :
Volcanic glass, such as obsidian, forms from lava that cools so rapidly it does not have time to crystallize, resulting in a glassy texture. This is the fastest cooling process among the options listed.
Learning Objectives
- Grasp the factors influencing the texture of igneous rocks, including cooling rates.