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Top AIPG eNews Articles of 2021
As 2021 comes 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 would like to provide a look back at the most accessed articles from the year. Look for more of the top articles from 2021 in the Jan. 4 issue. Our regular publication will resume Tuesday, Jan. 11.
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11. Extreme volcanism did not cause the massive extinction of species in the late Cretaceous
Phys.org
From Sept. 21: A study published in the journal Geology rules out that extreme volcanic episodes had any influence on the massive extinction of species in the late Cretaceous. The results confirm the hypothesis that it was a giant meteorite impact that caused the great biological crisis that ended up with the non-avian dinosaur lineages and other marine and terrestrial organisms 66 million years ago.
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12. The missing continent it took 375 years to find
BBC News
From Feb. 9: It was 1642 and Abel Tasman was on a mission. The experienced Dutch sailor, who sported a flamboyant moustache, bushy goatee and penchant for rough justice — he later tried to hang some of his crew on a drunken whim — was confident of the existence of a vast continent in the southern hemisphere, and determined to find it.
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13. Geologists solve half-century-old mystery of animal traces in ancient rocks
Phys.org
From Sept. 28: Geologists have been baffled by perforations in an Australian quartzite (rock), identical in shape to burrows made in sands by crustaceans; the original sandy sediment is a billion years older than the oldest known animals. An international team of scientists has now resolved the mystery.
When animals move, they leave traces, such as dinosaur footprints or the burrows of worms.
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15. New video shows movement of earth's tectonic plates over past billion years
Sci News
From Feb. 16: Plate tectonics is a unifying theory of modern geology, explicitly connecting the evolution and processes that bridge Earth’s mantle, lithosphere, hydrosphere and atmosphere.
Tectonic forces control the rates of uplift and erosion where continents collide or separate and modulate the flow of energy between oceans, lithosphere and mantle as continental configurations evolve.
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16. Geologic activity on Earth appears to follow a 27.5-million-year cycle
Tech Explorist
From July 6: According to many geologists, geological activity on Earth is a rare event. Plate tectonic theory implies that episodes of various regional geological events should manifest global patterns of plate dynamics and mantle-plume activity.
But, a new study offers statistical evidence for a common cycle- suggesting that these geological events are correlated. Scientists from New York University and the Carnegie Institution of Science in Washington D.C. analyzed 260 million years of geological feedback.
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17. UH geologists search for remains of lost ocean beneath earth's surface
University of Houston
From March 2: Over 621 miles below the western United States lies what geologists believe are the remains of a lost ocean, sinking toward the center of the Earth. These fragments of the Earth's crust formed the westernmost portion of North America during the Mesozoic Era, but researchers don't have a clear explanation of their origin.
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19. Hints of a recent eruption
Earth Observatory
From Feb. 23: The Kamchatka Peninsula of far eastern Russia has more than 300 volcanoes, 29 of which are active. This photo, taken by an astronaut onboard the International Space Station, captures a few of the region's active volcanoes — with some showing signs of recent eruptions. The photo was taken at a highly oblique angle with a long camera lens, giving a strongly three-dimensional perspective of the towering peaks.
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20. What a geologist sees when they look at Perseverance's landing site
Universe Today
From March 2: Geologists love fieldwork. They love getting their specialized hammers and chisels into seams in the rock, exposing unweathered surfaces and teasing out the rock's secrets. Mars would be the ultimate field trip for many of them, but sadly, that's not possible.
Instead, we've sent the Perseverance rover on the field trip. But if a geologist were along for the ride, what would it look like to them?
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