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When using pyrite to understand Earth's ocean and atmosphere: Think local, not global | The Source

When using pyrite to understand Earth’s ocean and atmosphere: Think local, not global
Shallow water at the edge of the Pacific Ocean reflects cloudy morning skies at Moeraki Boulders Beach, on the South Island of New Zealand. (Image: Shutterstock)
February 26, 2021
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The ocean floor is vast and varied, making up more than 70% of the Earth’s surface. Scientists have long used information from sediments at the bottom of the ocean layers of rock and microbial muck to reconstruct the conditions in oceans of the past.
Fike
These reconstructions are important for understanding how and when oxygen became available in Earth’s atmosphere and ultimately increased to the levels that support life as we know it today. ....

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Pyrite isn't a reliable proxy for Earth's oxygenation, study says

Pyrite isn t a reliable proxy for Earth s oxygenation, study says
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While pyrite may not be a good proxy for ancient oxygen levels, researchers suggest it can offer insights into local sea level changes and tectonic plate dynamics. Photo by John St. James/Flickr
Feb. 26 (UPI) When did Earth first acquire large amounts of oxygen? What did the planet s earliest microbial communities look like?
Many of the secrets of primordial Earth its climate conditions and biochemical composition are hidden in layers of marine sediments. To reconstruct Earth s past, scientists rely on certain chemical signatures preserved in the grains of sedimentary rocks. ....

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When using pyrite to understand Earth's ocean and atmosphere: Think local, not global

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The ocean floor is vast and varied, making up more than 70% of the Earth s surface. Scientists have long used information from sediments at the bottom of the ocean layers of rock and microbial muck to reconstruct the conditions in oceans of the past.
These reconstructions are important for understanding how and when oxygen became available in Earth s atmosphere and ultimately increased to the levels that support life as we know it today.
Yet reconstructions that rely on signals from sedimentary rocks but ignore the impact of local sedimentary processes do so at their own peril, according to geoscientists including David Fike in Arts & Sciences at Washington University in St. Louis. ....

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Colin Crawford Named Dean of Golden Gate University School of Law

Colin Crawford Named Dean of Golden Gate University School of Law
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SAN FRANCISCO, Feb. 24, 2021 /PRNewswire/ Colin Crawford, dean of the Louis D. Brandeis School of Law at the University of Louisville, is joining Golden Gate University School of Law as its 16
th dean.
GGU President David Fike announced the hire to the university on February 18, and Dean Crawford will join the San Francisco school this summer.
Dean Crawford is a very experienced and accomplished dean and legal scholar, Fike said. I m delighted to be able to work with him to help GGU Law deepen our strong commitment to student learning, maintain the high quality and rich diversity of the school s student body, and support the professional success of our graduates. ....

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