Saturday, May 25, 2019
Earth

Earth

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Credit: Density values from LithoRef18 (Afonso et al.) and gravity gradients from Bouman et al. (2016)
Earth

3D Earth in the making

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Subduction Zone - Earth
Earth

How life on Earth affected its inner workings

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A laser-heated diamond anvil cell is used to simulate the pressure and temperature conditions of Earth's core.
Earth

What does Earth’s core have in common with salad dressing?

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Polynya
Earth

Uncovering Polynya : Research unravels 43-year-old mystery in deep Antarctica

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diamonds formed from oceanic crust
Earth

Eclogitic diamonds formed from oceanic crust

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Everest
Earth

Nepal expedition to remeasure height of Everest

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Rocks with banded iron formations and biosignatures - 1,900 million years old, Michigan, US (top left), 2,700 million years old, Ontario, Canada (bottom left) and 2,500 million years old, Karijini National Park, Western Australia (right).
Earth

Tracking records of the oldest life forms on Earth

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Deep below the Earth in the Tonga-Fiji region of the South Pacific, one enormous earthquake triggered another.
Earth

Massive earthquakes provide new insight into deep Earth

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Graphite & Hexagonal Diamond
Earth

Cool Earth theory sheds more light on diamonds

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Cross-sections of Earth’s mantle down to 1,400 km depth showing changes in its flow as ancient ocean beds fall into Earth’s deep interior.
Earth

Earth’s deep mantle flows dynamically

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Earth's mantle (dark red) lies below the crust (brown layer near the surface) and above the outer core (bright red).
Earth

The solid Earth breathes

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From the field on Svalbard, showing an ancient channel extending into the Barents Sea.
Earth

The largest delta plain in Earth’s history

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Over the last 540 million years, as the Earth's tectonic plates have shifted, MIT researchers have found that periods of major tectonic activity (orange lines) in the tropics (green belt) were likely triggers for ice ages during those same periods.
Earth

Tectonics in the tropics trigger Earth’s ice ages

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Earth

Scientists go to extremes to reveal make-up of Earth’s core

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Researchers conducting fieldwork in Namibia as part of a previous study.
Earth

Ancient records prompt rethink of animal evolution timeline

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Mt. McRae Shale
Earth

Ancient rocks provide clues to Earth’s early history

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Taking a soil core from underwater soil is a bit trickier than soil that's on the surface. Scientists have to utilize boats and plunge the sampling equipment through water and down into the soil.
Earth

Getting to the core of underwater soil

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Earth

Earth may be 140 years away from reaching carbon levels not...

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Graphic showing the Transition Zone inside the Earth Princeton seismologist Jessica Irving worked with then-graduate student Wenbo Wu and another collaborator to determine the roughness at the top and bottom of the transition zone, a layer within the mantle, using scattered earthquake waves. They found that the top of the transition zone, a layer located 410 kilometers down, is mostly smooth, but the base of the transition zone, 660 km down, in some places is much rougher than the global surface average. “In other words, stronger topography than the Rocky Mountains or the Appalachians is present at the 660-km boundary,” said Wu. NOTE: This graphic is not to scale. Credit: Kyle McKernan, Office of Communications
Earth

Massive Bolivian earthquake reveals mountains 660 kilometers below our feet

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Bubbles of liquid carbon dioxide float out of the seafloor at a vent on Northwest Eifuku volcano off the coast of Japan.
Earth

How undersea gases once helped superheat our planet

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