Which outcome occurs with lava crystallization within cooled magma chambers?

💡 Explanation

Layered intrusions occur because fractional crystallization separates minerals based on their melting points. Early-crystallizing minerals sink and accumulate, therefore forming distinct layers, rather than causing changes in mantle plumes or geothermal gradients, which depend on different thermal processes.

• Which mechanism causes Benioff zone earthquake frequency pattern during oceanic plate subduction?
• Which factor is the primary cause of eruption style variations among stratovolcanoes along subduction zones?
• Which process increases mantle plume volcanism at divergent plate boundaries?
• Which outcome disproportionately amplifies tsunami risk when basaltic lava flows enter coastal regions?
• Which outcome occurs more intensely with increasing latitude?
• Which process initiates enhanced glacial erosion and cirque formation in arctic mountains subject to freeze-thaw cycles?