Geology
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4.5KWhy did the Earth’s ancient oceans disappear?
We think of oceans as being stable and permanent. However, they move at about the same speed as your fingernails grow. Geoscientists...
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19.7KYellowstone spawned twin super-eruptions that altered global climate
A new geological record of the Yellowstone supervolcano's last catastrophic eruption is rewriting the story of what happened 630,000 years ago and...
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7.7KResearch sheds new light on early turquoise mining in Southwest
Turquoise is an icon of the desert Southwest, with enduring cultural significance, especially for Native American communities. Yet, relatively little is known...
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5.2KAncient, lost, mountains in the Karoo reveals the secrets of massive extinction event
Millions of years ago, a mountain range that would have dwarfed the Andes mountains in South America, stretched over what is currently...
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10.8KVolcanic eruptions linked to social unrest in Ancient Egypt
Around 245 BCE Ptolemy III, ruler of the Ptolemaic Kingdom in Egypt, made a decision that still puzzles many historians: After pursuing...
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5.6KResearchers document one of planet’s largest volcanic eruptions
Washington State University researchers have determined that the Pacific Northwest was home to one of the Earth's largest known volcanic eruptions, a...
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4.5KLost continent of Zealandia: Scientists return from expedition to sunken land
After a nine-week voyage to study the lost, submerged continent of Zealandia in the South Pacific, a team of 32 scientists from 12 countries...
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3.5KDiamonds show Earth still capable of ‘superhot’ surprises
Diamonds may be ‘forever’ but some may have formed more recently than geologists thought. A study of 26 diamonds, formed under extreme...
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6.2KEarthquake faults may have played key role in shaping the culture of ancient Greece
The Ancient Greeks may have built sacred or treasured sites deliberately on land previously affected by earthquake activity, according to a new...
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4.6KDust deposits give new insights into the history of the Sahara
The Sahara is the world's largest desert and dust source with significant impacts on trans-Atlantic terrestrial and large-scale marine ecosystems.
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8.2KSea cave preserves 5,000-year snapshot of tsunamis
An international team of scientists digging in a sea cave in Indonesia has discovered the world's most pristine record of tsunamis, a...
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3.3KResearch opens fresh view on volcanic plumbing systems
Volcanic eruptions such as Mount St. Helens' in 1980 show the explosiveness of magma moving through the Earth's crust.
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4.7KA map that fills a 500-million year gap in Earth’s history
Earth is estimated to be around 4.5 billion years old, with life first appearing around 3 billion years ago.
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4.6K‘Bulges’ in volcanoes could be used to predict eruptions
A team of researchers from the University of Cambridge have developed a new way of measuring the pressure inside volcanoes, and found...
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4.2KVolcanic eruptions triggered dawn of the dinosaurs
Huge pulses of volcanic activity are likely to have played a key role in triggering the end Triassic mass extinction, which set...
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8.0KCrystals once deep inside a volcano offer new view of magma, eruption timing
Volcanologists are gaining a better understanding of what's going on inside the magma reservoir that lies below New Zealand's Mount Tarawera volcano....
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11.5KNew evidence reveals source of 1586 Sanriku, Japan tsunami
A team of researchers, led by Dr. Rhett Butler, geophysicist at the University of Hawai'i at Mānoa (UHM), re-examined historical evidence around...
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4.8KNaracoorte, where half a million years of biodiversity and climate history are trapped in caves
In 1857, guided by the flickering light of a candle deep in a cave at Naracoorte in South Australia, the Reverend Julian...
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3.4KHow the Arctic Ocean became saline
The Arctic Ocean was once a gigantic freshwater lake. Only after the land bridge between Greenland and Scotland had submerged far enough...
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3.6KDeep magma reservoirs are key to volcanic ‘super-eruptions’, new research suggests
Large reservoirs of magma stored deep in the Earth's crust are key to producing some of the Earth's most powerful volcanic eruptions,...
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3.5KVolcanoes, referees for the life on Earth
At the Triassic-Jurassic boundary, 200 million years ago, some 60% of species living on Earth disappeared. Scientists suspected that magmatic activity and...
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4.6KResearchers discover hottest lavas that erupted in past 2.5 billion years
An international team of researchers led by geoscientists with the Virginia Tech College of Science recently discovered that deep portions of Earth's...
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