Tharp was a pioneering cartographer and geologist whose meticulous maps of the Atlantic Ocean floor revealed the unseen and unlocked one of the most significant scientific revolutions of the century.

The chain runs down the middle of the Atlantic ... Pacific Ocean. Running along the top of this chain of mountains is a deep crack, called a rift valley. It is here that new ocean floor is ...

The Atlantic is the second largest ocean on the planet ... This toxic layer looks so dark it resembles the hole's floor but is actually a boundary which separates oxygenated water from oxygen ...

Almost five years of studying the deep Atlantic in ... say we have better maps of the surface of the Moon and Mars than of the sea floor." "So whenever you go to the deep ocean, you find something ...