News tagged with early crust
Researchers find oldest rocks on Earth
Space & Earth / Earth Sciences
Sep 25, 2008 |
4.2 / 5 (18) |
3
Canadian bedrock more than four billion years old may be the oldest known section of the Earth's early crust. Scientists at the Carnegie Institution used geochemical methods to obtain an age of 4.28 billion ...
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Researchers hope to use quakes to unlock secrets about Earth's crust
Space & Earth / Earth Sciences
Dec 14, 2006 |
3.3 / 5 (3) |
0
Over the past several decades, the United States Government established the Global Seismographic Network to monitor nuclear explosions worldwide. That network has also proven to be a crucial source of information for geologists ...
New high-res map suggests little water inside moon
Space & Earth / Space Exploration
Feb 12, 2009 |
4.6 / 5 (7) |
2
(PhysOrg.com) -- The most detailed map of the Moon ever created has revealed never-before-seen craters at the lunar poles. The map is also revealing secrets about the Moon's interior -- and ...
Ocean May Exist Beneath Titan's Crust
Space & Earth / Space Exploration
Mar 20, 2008 |
4.8 / 5 (24) |
1
NASA's Cassini spacecraft has discovered evidence that points to the existence of an underground ocean of water and ammonia on Saturn's moon Titan. The findings made using radar measurements of Titan's rotation ...
Researchers use multispectral images to reveal origin and evolution of Mercury
Space & Earth / Space Exploration
Apr 30, 2009 |
5 / 5 (5) |
2
Up until last year globes of Mercury were blank on one side. The Mariner 10 spacecraft explored the small planet in three flybys (1974-1975), but since no more than half was ever seen it remained the least ...
21st century detective work reveals how ancient rock got off to a hot start
Space & Earth / Earth Sciences
Oct 15, 2008 |
4.7 / 5 (6) |
1
A new technique using X-rays has enabled scientists to play 'detective' and solve the debate about the origins of a three billion year old rock fragment.
Ancient mineral shows early Earth climate tough on continents
Space & Earth / Earth Sciences
Jun 13, 2008 |
4.7 / 5 (31) |
0
A new analysis of ancient minerals called zircons suggests that a harsh climate may have scoured and possibly even destroyed the surface of the Earth's earliest continents.
21st Century detective work reveals how ancient rock got off to a hot start
Nov 06, 2008 |
4.7 / 5 (6) |
0
(PhysOrg.com) -- A new X-ray technique has enabled scientists to "play detective" and solve the debate about the origins of a three-billion-year-old rock fragment.
Geochemists challenge key theory regarding Earth's formation
Space & Earth / Earth Sciences
May 01, 2008 |
4.2 / 5 (35) |
3
Working with colleagues from NASA, a Florida State University researcher has published a paper that calls into question three decades of conventional wisdom regarding some of the physical processes that helped ...
Magnetic fields record the early histories of planets
Oct 30, 2008 |
4.6 / 5 (16) |
3
(PhysOrg.com) -- Meteorites that are among the oldest rocks ever found have provided new clues about the conditions that existed at the beginning of the solar system, solving a longstanding mystery and overturning ...
Asteroid Attack 4 Billion Years Ago May Have Accelerated Life on Earth
Space & Earth / Earth Sciences
May 20, 2009 |
4.7 / 5 (13) |
3
(PhysOrg.com) -- The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given ...
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