Which outcome is typically observed within volcanic lava domes undergoing cooling?

💡 Explanation

Polygonal jointing appears, driven primarily by thermal contraction; as the dome cools, stress increases. Contraction fractures form because tensile stress exceeds rock strength, therefore cracking patterns create polygonal columns, rather than ductile flow.

• Which process sharply increases stress concentration within coastal sea stacks?
• Which risk increases when locked fault zones release?
• Which outcome occurs when prolonged drought weakens aquifers?
• Which risk increases when subsurface carbon sequestration targets exceed threshold?
• Which mechanism triggers land bridge formation when eustatic sea level falls?
• Which consequence results when differential weathering weakens strata?