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What Happened Prior to Snowball Earth?
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| Topic: Geology |
01/30/12 |
| Summary: A new study suggests that geochemical records found in rocks prior to the glaciation event known as 'Snowball Earth' are unrelated to the glaciation itself. |
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Waiting for Death Valley's Big Bang
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| Topic: Geology |
01/25/12 |
| Summary: Geologists have determined that a half-mile-wide crater in California's Death Valley was formed by a volcanic explosion much more recently than previously thought. Their research also indicates that another, similar explosion could still occur at the site. |
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Seeking a Pot of Geological Gold
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| Topic: Geology |
12/15/11 |
| Summary: Researchers are moving a step closer to solving one of the greatest murder mysteries of all time. It happened roughly 200 million years ago, marking the boundary between the Triassic and Jurassic periods, and the crime scene was the entire planet. In their quest to solve this ancient mystery, a team of scientists has been combing the coast of Northern Ireland for evidence. |
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Oxygen's Stops and Starts
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| Topic: Geology |
12/06/11 |
| Summary: Based on studies of rock cores, geoscientists have determined that oxygen did not appear in Earth's atmosphere in a single event. |
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Earth's Early Atmosphere
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| Topic: Geology |
12/02/11 |
| Summary: Scientists have reconstructed the atmospheric conditions of the early Earth by studying the oldest minerals on our planet. The study provides new data that is important in understanding the conditions under which life arose. |
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Recreating the Center of the Earth
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| Topic: Geology |
11/16/11 |
| Summary: It is easier to visit Mars than the base of Earth's thin crust - but a new instrument is now helping scientists understand the unique matter that exist at extreme temperatures and pressures in our planet's core. The study will help astrobiologists better understand the properties of planets - from earthquakes to magnetic fields. |
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Cretaceous Climate Tied to Ocean Circulation
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| Topic: Geology |
10/29/11 |
| Summary: New research indicates that temperatures in the Atlantic Ocean during the greenhouse climate of the Late Cretaceous were influenced by circulation in the deep ocean. The study could help astrobiologists understand how modern climate change could affect the future of our planet. |
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Evidence for an Iron-Rich Early Ocean
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| Topic: Geology |
09/09/11 |
| Summary: A new study reveals that the ancient deep ocean was devoid of oxygen and rich in iron. The finding requires scientists to rethink models for how life-essential nutrients were distributed in the oceans. |
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Carbon's Deep Mysteries
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| Topic: Geology |
08/30/11 |
| Summary: A new international project could help unlock secrets held deep beneath the surface of planet Earth. |
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