What does this texture indicate about the formation of this rock?
A)It formed from an explosive pyroclastic eruption.
B)The rock solidified at great depth.
C)The magma formed some crystals before rising closer to the surface and solidifying.
D)The magma had abundant dissolved gas.

Question

What does this texture indicate about the formation of this rock? 
A)It formed from an explosive pyroclastic eruption. 
B)The rock solidified at great depth. 
C)The magma formed some crystals before rising closer to the surface and solidifying. 
D)The magma had abundant dissolved gas.

Quizplus · Accepted Answer

The texture (small crystals in a finer matrix) indicates that the rocks formed from magma that cooled relatively slowly, allowing some crystals to form before it solidified. The rock did not form at great depth, as the slow cooling typically occurs closer to the surface. There is no evidence of explosive pyroclastic eruption or abundant dissolved gas based on this texture.

What Does This Texture Indicate About the Formation of This