PBS11y
Discoveries in the Deep
Marie Tharp, studying echo soundings, discovers that the Mid-Atlantic Ridge conceals a long rift valley, which turns out to be part of a hidden volcanic rent that girds the global deep.
Marie Tharp pioneered mapping the bottom of the ocean 6 decades ago – scientists are still learning about Earth’s last frontier
Despite all the deep-sea expeditions and samples taken from the seabed over the past 100 years, humans still know very little about the ocean’s deepest reaches. And there are good reasons to learn ...
ZME Science on MSN5mon
A stunning map of the Atlantic Ocean seafloor — and one woman’s pioneering quest to publish it
This underwater mountain range is now called the Mid-Atlantic Ridge, and it was one ... more startling was the central valley ...