4+ hour, 16+ min ago  (824+ words) By tracing magnetic signals preserved in 3.5-billion-year-old rocks in Western Australia, geoscientists have found the oldest direct evidence yet that parts of the planet's outer shell were shifting across the globe, pushing the origins of plate motion deep into Earth's…...

1+ mon, 5+ day ago  (416+ words) For years glaciologists puzzled over strange plume-like structures hidden deep within the Greenland Ice Sheet. Now a new study by scientists from the University of Bergen, NASA's Goddard Space Flight Center and the University of Oxford suggests that these enigmatic…...

1+ mon, 6+ day ago  (527+ words) New research by geoscientists from the University of Florida and the Institut de Physique du Globe de Paris traces the origins of the Antarctic gravity hole (or the Antarctic Geoid Low) " the planet's most extreme gravity anomaly " to slow, subterranean…...

1+ mon, 1+ week ago  (361+ words) This perspective view from ESA's Mars Express shows three of Mars' famously colossal volcanoes (from left to right): Arsia, Pavonis and Ascraeus Mons. Image credit: ESA / DLR / FU Berlin. What appears to be a single volcanic eruption is often the…...

1+ mon, 2+ week ago  (386+ words) Two immense, ultrahot rock structures located at the base of Earth's mantle, around 2,900 km beneath Africa and the Pacific, have been shaping Earth's magnetic field for millions of years, according to a new study led by University of Liverpool's Professor…...

2+ mon, 1+ day ago  (413+ words) New research challenges conventional wisdom by demonstrating that mid-ocean ridges and continental rifts, not volcanic eruptions, played the central role in atmospheric carbon swings and long-term climate shifts throughout Earth's geological past. Cryogenian Earth. Image credit: NASA. Earth's climate has…...

2+ mon, 3+ week ago  (546+ words) The newly-discovered theropod and sauropod footprints are part of the Late Jurassic Majala Formation, and represent the oldest dinosaur footprints reported for Chile and the western margin of the ancient supercontinent Gondwana. "The Late Jurassic fossil record exhibits notable disparities…...

2+ mon, 4+ week ago  (487+ words) Scientists have long known that fluid inclusions in halite crystals contain samples of the early Earth's atmosphere. But teasing accurate measurements out of those inclusions has proven to be a formidable challenge: they contain both air bubbles and brine, and…...

3+ mon, 4+ week ago  (730+ words) For decades, scientists have been baffled by two enormous structures buried deep inside Earth. These anomalies may retain geochemical signatures distinct from the surrounding mantle. Yet, their origin remains enigmatic. Rutgers University geodynamicist Yoshinori Miyazaki and colleagues offer a striking…...

4+ mon, 23+ hour ago  (663+ words) An artist's impression of the collision between the proto-Earth and Theia. Image credit: MPS / Mark A. Garlick. "The composition of a body archives its entire history of formation, including its place of origin," said study's senior author Dr. Thorsten Kleine, a…...