1 The theory that caverns are dissolved by the percolation of CO 2 -rich ground water through joints or along bedding planes in the limestone, forming a weak carbonic acid that reacts with the limestone, is quite old.
(caverns; are dissolved; by the percolation of CO 2 -rich ground water) (a weak carbonic acid; reacts; with the limestone) (1 The theory that caverns are dissolved by the percolation of CO 2 -rich ground water through joints or along bedding planes in the limestone,; is; quite old)
caverns a weak carbonic acid 1 The theory that caverns are dissolved by the percolation of CO 2 -rich ground water through joints or along bedding planes in the limestone,
are dissolved reacts is
by the percolation of CO 2 -rich ground water
with the limestone
quite old