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Science Engineering and Technology timeline
This thematic timeline contains 51 entries
If a single landmass (Pangaea) existed, it is suggested that it started to break apart at this time and form the separate continents
More about: Pangaea
Puget Sound, Washington, formed by glaciers
Near the peak of the Ice Age, the sea-level is about 400 feet (120 m) lower than it is now, with almost 32% of land covered in ice
Formation of the Great Lakes
Global cooling event, possibly caused by collapse of two giant glacial lakes in Hudson Bay area of Canada
Great Britain becomes an island as rising sea levels cut off mainland Europe
Black Sea basin filled with water from the Mediterranean; some researchers describe this as fulfilling the Biblical Flood scenario
Inuit peoples of North America start to hunt whales and seals
Prince Henry the Navigator establishes his school of navigation
Vasco da Gama completes the first sea voyage from Europe to India and back, rounding the Cape of Good Hope
Spanish mapmaker Diego Ribeiro makes the first scientific charts of the Pacific
Major storm sinks Spanish Armada, killing an estimated 20,000 sailors
Abraham Orteliu, a cartographer, was the first to suggest the possibility of continental drift
More about: continental drift
Galileo Galilei puts forward a theory of tides
Newton uses the theory of gravitation to explain tides
First hydrographic survey of Australian coastline carried out by Baudin
Louis Agassiz's Etudes sur les glaciers describes the movements and deposits of glaciers
Charles Darwin's The structure and distribution of coral reefs ... classifies coral reefs into three types and presents Darwin's theory of the formation of atolls by subsidence of islands
Discovery of the continental slope and the continental shelf break
More about: continental shelf
Matthew Fontaine Maury prepares a chart of the Atlantic Ocean and notes that it is shallower at the centre than it is nearer the edges, the first indication of the mid-Atlantic Ridge
James Alden discovered the first known sea-floor canyon (Monterey Canyon)
Naturalist Louis Agassiz collected over 30,000 sea life specimens
First modern bathymetric map completed after studies in the Gulf of Mexico and the Caribbean
First purpose-built oceanographic ship, the Albatross, built by Americans
First acoustic measurements of sea depth taken
The German Meteor expedition used sonar to survey the Mid-Atlantic Ridge
Discovery of the Challenger Deep, the deepest point on Earth, located in the Marianas Trench
Maurice Ewing and Bruce Heezen discover the Great Global Rift running along the Mid-Atlantic Ridge
Mountain range under the frozen Arctic Ocean discovered by Russian Arctic Institute
More about: Arctic Ocean
First untethered deep sea dive to 13,000 feet off the coast of Dakar by Georges Houot and Pierre Willm aboard French ship F.N.R.S. 3
Harry Hammond Hess develops the theory of seafloor spreading
J Tuzo Wilson shows that faults perpendicular to the mid-ocean rifts develop as the sea floor spreads
More about: transform faults
Ocean Drilling Project (ODP, formerly Deep-Sea Drilling Project) begins
John B Corliss and Robert Ballard, aboard the submersible Alvin, discover deep-sea vents near the Galapagos Islands; the hot springs are surrounded by a community of sulphur-eating bacteria, giant clams and tube worms
Hydrothermal vents found in Pacific Ocean, enabling ecosystems to develop without energy from the Sun
Discovery of giant sea worms three metres long in hydrothermal vents at a depth of 2,450 metres below the Galapagos Islands
United Nations Convention on the Law of the Sea established to provide rules on marine pollution and environmental standards
Pacific equatorial oceanographic buoy array installed, allowing prediction of El Nino atmospheric/oceanic events
Start of World Ocean Circulation Experiment
Accurate seafloor mapping undertaken using declassified Geosat satellite altimetry data
Research suggests that the supply of large fish in the seas has dimished by 90% since 1950