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| Breakup of the Pangaea supercontinent. |
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01/17/09 |
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| This ion microprobe at UCLA is used to analyze ultra-thin sections of zircons. Credit: Stephen Mojzsis |
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| A zircon under a microscope. Credit: Stephen Mojzsis |
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01/17/09 |
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| Hadean zircons were found at Eranondoo Hill, which is part of the Jack Hills in Western Australia. Credit: Stephen Mojzsis |
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01/17/09 |
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Volcanic eruptions from the volcano Askja created the small crater VÃti (foreground) and large lakes, such as Öskjuvatn (background).
Credit: OSU |
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01/17/09 |
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David Marchant is interviewed in the McMurdo Dry Valleys.
Credit: NSF |
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01/17/09 |
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Examples of fossils found in the McMurdo Dry Valleys.
Credit: Zina Deretsky/National Science Foundation
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01/17/09 |
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The Yellowstone volcano's caldera, or sunken floor, covers an immense area.
Credit: U.S. Geological Survey |
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01/17/09 |
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| Photo of mineralized gas bubbles (amygdales) in 2.74 billion year old basalt from Australia. Credit: R. Buick. |
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01/17/09 |
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| On a rock outcropping in South Africa, this meerkat "guards" fossilized raindrop craters that formed 2.7 billion years ago. Credit: Wladyslaw Altermann of Ludwig-Maximilians-University of Munich. |
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01/17/09 |
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| When a raindrop lands in mud, the impact can create a tiny crater. Buick is studying fossilized raindrop imprints in mud that dried and hardened into rock billions of years ago. |
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01/17/09 |
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Earth's oldest known rock is composed of the mineral amphibole, which contains abundant garnet, seen as large round "spots" in the rock. Credit: Jonathan O'Neil
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01/17/09 |
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Bedrock along the northeast coast of Hudson Bay, Canada, has the oldest rock on Earth. Credit: Jonathan O'Neil
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01/17/09 |
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A large spherical cluster of spearheads was dubbed the "Magnetic Death
Star" by researchers.
Credit: Caltech
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01/17/09 |
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A typical spearhead-shaped crystal.
Credit: Caltech |
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01/17/09 |
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| Los Angeles street |
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05/27/09 |
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| Antarctic Peninsula |
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05/27/09 |
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| Asgard Mountain Range |
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05/27/09 |
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| organic photosynthesis |
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05/27/09 |
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| Char Formation |
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05/27/09 |
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| SpaceStorm |
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05/29/09 |
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| BIFs |
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06/21/09 |
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| Apatite |
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06/21/09 |
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| ClimateSlice |
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06/27/09 |
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| Cars |
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06/27/09 |
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| TreesFallen |
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06/27/09 |
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| EarlyEarth |
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08/19/09 |
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| IceAge |
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08/19/09 |
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| hotzone |
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09/01/09 |
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| NeutralAtmosphere |
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09/01/09 |
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| DustClouds |
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09/04/09 |
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| AerosolHaze |
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10/06/09 |
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| MethanePhotochem |
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10/06/09 |
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| ChinaHaze |
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10/06/09 |
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| BandedIron |
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10/12/09 |
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| BeringiaFossil |
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10/27/09 |
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| BeringiaDeposit |
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| EarlyClimate |
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11/11/09 |
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| EocenePoles |
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11/22/09 |
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| EastTasmania |
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11/22/09 |
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| EoceneGlacier |
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11/22/09 |
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| Ocean |
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11/22/09 |
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| Sulphur33 |
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11/22/09 |
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| LASmog |
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12/10/09 |
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| WyomingCoal |
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01/14/10 |
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| HansenStorms |
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01/21/10 |
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| Mount Saint Helens |
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02/18/10 |
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| Haiti |
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02/21/10 |
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| Nitrogen Cycle |
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02/22/10 |
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| Concepcion |
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03/04/10 |
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