What is "upwelled"

Usage examples of "upwelled".

Without any gravity to speak of, tears upwelled and clung in quivering beads held together by surface tension.

Molten fractions of the mantle's basalt, the scientists theorized, upwelled at the oceanic ridges and pushed the floor toward the continents where it dived under their edges, lifting them into mountain chains or stripping away vast stretches of coast, producing earthquakes and volcanic eruptions.

He could not give the child her mother, any more than he could restore his wife, but perhaps the shimmering pool, where water upwelled in bubbles from its sandy bed, would ease her pain as it did his.