Which process at the Corven site most directly caused the observed structural and compositional change?
A
Intense pressure from the overlying layers compacted minerals into distinct foliation bands across the rock.B
Heat and dissolved materials from circulating fluids transferred energy into cracks, forming new mineral veins.C
Cooling groundwater replaced metallic minerals with silicates, filling empty spaces between older crystals.D
Expanding gases from the magma chamber pushed upward, forcing crystals to grow along fracture boundaries.