ocean rocks
What is ocean rock made of?
basalt and gabbro
What is a wharf in the ocean?
a structure built along or at an angle from the shore of navigable waters so that ships may lie alongside to receive and discharge cargo and passengers
How old are oceanic rocks?
180-200 million years old
Why is a wharf called a wharf?
wharf comes from the Old English hwearf, cognate to the Old Dutch word werf, which both evolved to mean "yard
Why do ocean rocks have holes?
sea creatures—specifically boring sponges, worms, and several species of mollusks
What is the purpose of a wharf?
to provide a stable platform for ships to dock
Where is the oldest rock in the ocean?
the deepest parts of the ocean floor in the abyssal plains.
Why are there no oceanic rocks older than 200 million years?
Oceanic crust is eventually destroyed in subduction zones