Question

question 11 (0.83 points)
the colored bands represent different types of metamorphic rocks eventually exposed at the surface by deep erosion. what conclusion can you draw about the purple (the lowest) colored band compared to the other bands?
it formed under greater pressure and likely higher temperature
it formed under lower pressure and likely lower temperature
it formed under lower pressure and likely higher temperature
it formed under greater pressure and likely lower temperature

Explanation:

Metamorphic rocks form due to heat and pressure from burial. Deeper rock layers experience greater overburden pressure and higher geothermal temperatures. The purple band is the lowest (originally deepest) layer, so it formed under more extreme conditions than the shallower bands.

Answer:

It formed under greater pressure and likely higher temperature