Magnetism of Himalayan rocks reveals the mountains' complex tectonic history

Earth's magnetic field locks information into lava as it cools into rock. Millions of years later, scientists can decipher this magnetic data to build geologic timelines and maps.

Craig Robert Martin, Ph.D. Student in Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology • conversation
Nov. 2, 2020 ~9 min

geology lava plate-tectonics india magnetism rocks mountains himalayas magnetic-fields mantle earths-mantle tectonic-plates subduction paleomagnetism

Marie Tharp pioneered mapping the bottom of the ocean 6 decades ago – scientists are still learning about Earth's last frontier

Born on July 30, 1920, geologist and cartographer Tharp changed scientific thinking about what lay at the bottom of the ocean – not a featureless flat, but rugged and varied terrain.

Suzanne OConnell, Professor of Earth & Environmental Sciences, Wesleyan University • conversation
July 28, 2020 ~10 min

earth-science geology women-in-science women plate-tectonics maps mapping oceans cartography continents ocean-floor geosciences seamounts marine-geology continental-shelf

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