Which phenomenon explains the rapid cooling of pillow lava?

💡 Explanation

Hyaloclastite forms along subaqueous lava flows via thermal fracturing; the outer lava surface rapidly cools and shatters via quenching because the high water-lava temperature differential forms brittle fragments; therefore hyaloclastite, rather than the cooling/textural styles above water is promoted.

• Which outcome occurs when a meandering stream encounters differential weathering?
• Which mechanism causes increased rockfall within cirques undergoing thaw?
• Which consequence results when limestone dissolution causes sinkhole formation?
• Which outcome occurs when intense weathering follows glacial retreat?
• Which outcome dominates when a locked subduction zone ruptures?
• Which mechanism suppresses volcanic arc volcanism following increased sediment subduction?