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Top AIPG eNews Articles of 2020
As 2020comes to a close, AIPG would like to wish its members, partners and other industry professionals a safe and happy holiday season. As we reflect on the past year for the industry, we continue our look back at the most accessed articles from the year. Our regular publication will resume Tuesday, Jan. 12.
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Melting ice in Antarctica reveals new uncharted island
LiveScience
From March 3: Pointing toward South America like an icy finger, the Antarctic Peninsula is one of the fastest-warming regions on Earth. The peninsula's two major glaciers — the Thwaites Glacier and the Pine Island Glacier — are retreating toward the mainland faster than new ice can form, chipping away at the continent's coasts a little more each year. All that melting ice left behind a surprise that could change maps of the region permanently: an uncharted island, long buried in ice but finally visible above sea level for the first time.
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Earth's water came from enstatite chondrite-like asteroids, study suggests
Sci-News.com
A type of meteorite called an enstatite chondrite has similar isotopic composition to terrestrial rocks and thus may be representative of the material that formed Earth. A new study published in the journal Science shows that these meteorites contain sufficient hydrogen to have delivered to Earth at least three times the mass of water in its oceans.
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99-million-year-old insects caught in amber shows brilliant colors
The Science Times
From July 7: Knowing the colors of prehistoric creatures is a challenging task, especially when what's left of them, such as bones, cannot convey what color they were when they were still living. But scientists have recently been working out pigments from fossilized feathers or in the case of the most recent study, used Burmese amber to see the world of ancient colors.
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How earthquakes deform gravity
Helmholtz Association of German Research Centers via Phys.org
From Feb. 25: For centuries, people have estimated the distance of a thunderstorm from the time between lightning and thunder. The greater the time gap between the two signals, the further away the observer is from the location of the lightning. This is because lightning propagates at the speed of light with almost no time delay, while thunder propagates at the much slower speed of sound of around 340 meters per second. Earthquakes also send out signals that propagate at the speed of light (300,000 kilometers per second) and can be recorded long before the relatively slow seismic waves (about 8 kilometers per second).
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East African Rift System is slowly breaking away, with Madagascar splitting into pieces
Virginia Tech via ScienceDaily
From Nov. 17: The African continent is slowly separating into several large and small tectonic blocks along the diverging East African Rift System, continuing to Madagascar — the long island just off the coast of Southeast Africa — that itself will also break apart into smaller islands. These developments will redefine Africa and the Indian Ocean. The finding comes in a new study by D. Sarah Stamps of the Department of Geosciences for the journal Geology. The breakup is a continuation of the shattering of the supercontinent Pangea some 200 million years ago.
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Earn your MSc in Mineral Exploration – Geology in 1-2 years at Laurentian University’s Harquail School of Earth Sciences to upgrade your credentials and your career.
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A tale of two kinds of volcanoes
University of Johannesburg via Phys.org
From May 12: At an idyllic island in the Mediterranean Sea, ocean covers up the site of a vast volcanic explosion from 3,200 years ago. A few hundred kilometers northwest, three other islands still have their volcanic histories from a few million years ago mostly intact. No explosions there. So why the differences between the Santorini caldera and the Aegina, Methana and Poros lava domes? Researchers used volcanic "fingerprints" and plate tectonics research to find out.
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Biosignatures may reveal a wealth of new data locked inside old fossils
Yale News
From July 14: Step aside, skeletons — a new world of biochemical “signatures” found in all kinds of ancient fossils is revealing itself to paleontologists, providing a new avenue for insights into major evolutionary questions. In a new study published in the journal Science Advances, Yale researchers outline a novel approach to finding biological signals long thought to be lost in the process of fossilization.
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Geologists find magma 'conveyor belt' that fueled earth's longest supervolcano burst
Science Alert
From Nov. 10: A subterranean "conveyor belt" of magma, pushing up to Earth's surface for millions of years, was responsible for the longest stretch of erupting supervolcanoes ever seen on the planet, according to new research. Shifts in the seabed caused channels to form, through which the magma could flow freely, researchers say. This resulted in an extensive period of eruptions lasting from around 122 million years ago to 90 million years ago; exceptional, considering that typically these types of flows lasted just 1-5 million years.
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