Which outcome occurs when slow lava flow cools?

💡 Explanation

Block lava forms because the lava's high viscosity prevents smooth flow during cooling, resulting in a fractured surface, therefore a mass of detached blocks is produced, rather than forming smooth pahoehoe or highly fragmented aa textures.

• Which outcome results when pyroclastic flows enter a drainage basin?
• Which failure mode arises when a heated pipeline is constructed above discontinuous permafrost?
• Which long-term outcome results as a tectonic valley fills with sediment eroded through hydraulic action from a central, elevated source?
• Which outcome occurs when glacial outwash dust accumulates?
• Which mechanism causes star dune formation in hyper-arid environments?
• Which risk escalates inside deep canyons cutting through pyroclastic deposits?