Page 19 - (DK) Ocean - The Definitive Visual Guide
P. 19
NEW COASTLINE
The shape of a coastline is determined by a balance of forces. The
coastlines of the Galápagos Islands in the eastern Pacific are relatively
new, having formed when the islands were created by volcanic eruptions.
The lava seen here solidified about 100 years ago, but more recent
eruptions have occurred on some of the group’s younger islands.
THE FALL OF THE APOSTLES
On this part of the southern Australian coast, marine erosion is the
dominant force. A line of limestone cliffs is slowly being worn back
by the sea, leaving behind isolated stacks of rock. The stacks are
collectively known as the Twelve Apostles, although when they were
named there were only nine of them and there are now just eight.
