Complex sentence: A lithospheric drip is a geological phenomenon in which a heavy rock formation sinks in a lighter rock formation, the latter having been made plastic by high temperature and pressure, leaving a long trail behind the heavy material, like honey dripping off a spoon.
Split into simpler sentences: A lithospheric drip is a geological phenomenon in which a heavy rock formation sinks in a lighter rock formation, the latter having been made plastic by high temperature and pressure. A long trail is left behind the heavy material, like honey dripping off a spoon.