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Scientists Overcome Barriers From Pandemic To Find Wyoming Fossils

4:04
In a normal year, University of Wyoming associate professor in botany and geology Ellen Currano would spend about a month searching for plant fossils. But in the midst of the pandemic last summer, Currano wasn t allowed to do her usual research.
Typically, Currano said the first step in the process is pouring over geologic maps. Once she picks a broad area to study, she goes there to walk and drive around. Currano looks for drab gray and brown rocks because plants aren t preserved inside darker rocks.
Before they became rock, they were exposed on the surface for a long time. There were worms crunching things up. There were roots growing through things, she said. You re not going to find plant fossils in those. ....

University Of Wyoming , United States , Ellen Currano , Smithsonian National Museum Of Natural History , National Museum , Natural History , Scott Wing , Google Earth , University Of Wyoming , Climate Change , பல்கலைக்கழகம் ஆஃப் வயோமிங் , ஒன்றுபட்டது மாநிலங்களில் , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறு , தேசிய அருங்காட்சியகம் , இயற்கை வரலாறு , ஸ்காட் சாரி , கூகிள் பூமி ,

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Washed Ashore: Art to Save the Sea | Travel Wisconsin
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Earth's oldest minerals date onset of plate tectonics to 3.6 billion years ago

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IMAGE: Zircons studied by the research team, photographed using cathodoluminescence, a technique that allowed the team to visualize the interiors of the crystals using a specialized scanning electron microscope. Dark circles.
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Credit: Michael Ackerson, Smithsonian.
Scientists led by Michael Ackerson, a research geologist at the Smithsonian s National Museum of Natural History, provide new evidence that modern plate tectonics, a defining feature of Earth and its unique ability to support life, emerged roughly 3.6 billion years ago.
Earth is the only planet known to host complex life and that ability is partly predicated on another feature that makes the planet unique: plate tectonics. No other planetary bodies known to science have Earth s dynamic crust, which is split into continental plates that move, fracture and collide with each other over eons. Plate tectonics afford a connection between the chemical reactor of Earth s interior ....

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New Study on Zircons Finds Plate Tectonics Began 3.6 Billion Years Ago

May 14th, 2021, 11:00AM
/ BY
Abigail Eisenstadt
Zircons are the oldest minerals in the world and come in colors like the rich blue above. Researchers have now used these gemstones to identify when modern plate tectonics began. (Ken Larsen)
Zircon minerals are the oldest-known Earth material. Some formed even before the planet s crust became the rigid continental plates that move according to modern plate tectonics.
New research on ancient zircons suggests that Earth’s modern plate tectonics likely formed around 3.6 billion years ago. The paper, published in the journal Geochemical Perspective Letters, reveals how one of Earth’s defining geologic features likely formed and set the stage for the emergence of life. ....

Ken Larsen , Michael Ackerson , Abigail Eisenstadt , Environmental Sciences , Department Of Earth , Boston University , Smithsonian National Museum Of Natural History , Public Affairs , University Of Rochester , Office Of Communications , New Study , Zircons Finds Plate Tectonics Began , Geochemical Perspective Letters , National Museum , Natural History , Western Australia , Jack Hills , Dustin Trail , Unique Planet , Communications Assistant , More From This Author , கேன் லார்சன் , சுற்றுச்சூழல் அறிவியல் , துறை ஆஃப் பூமி , போஸ்டன் பல்கலைக்கழகம் , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறு ,

Tiny Crystals Point to Date Plate Tectonics Began

James Gaines, Contributor
(Inside Science) Scientists examining billions-of-years-old crystals from Australia say they ve uncovered new evidence that helps pin the start of plate tectonics at roughly 3.6 billion years ago.
Plate tectonics is the process responsible for continental drift, most earthquakes and volcanoes, and potentially even the long-term habitability of the Earth (thanks to the process s role in regulating our atmosphere). It s also, as far as we know, unique to the Earth no other planet is known to have plate tectonics. But exactly how, when and why the young Earth started exhibiting plate tectonics is still unknown and answering this question is of top priority to geologists. ....

Michael Ackerson , Smithsonian National Museum Of Natural History , Inside Science , National Museum , Natural History , Jack Hills , Geochemical Perspectives Letters , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறு , உள்ளே அறிவியல் , தேசிய அருங்காட்சியகம் , இயற்கை வரலாறு , பலா மலைகள் ,