The world s oldest impact crater may not actually be a crater salon.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from salon.com Daily Mail and Mail on Sunday newspapers.
TORONTO A Canadian-led international team of scientists have disproven what was thought to be the discovery of the ‘world’s older crater’ from a meteorite in Greenland in 2012. The findings, published in the March issue of “Earth and Planetary Science Letters,” detail that during fieldwork at the Archean Maniitsoq structure in Greenland, the scientists – led by the University of Waterloo’s Chris Yakymchuk - found that the features of the region were “inconsistent with an impact crater,” according to a press release. A different team of scientists in 2012 had originally identified it as the remnant of a crater formed when a meteorite struck Greenland three billion years ago.
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IMAGE: Using a method to better locate the source of weak tremors from regions with complex geological features, researchers from Kyushu University s International Institute for Carbon-Neutral Energy Research found that many. view more
Credit: Takeshi Tsuji, Kyushu University
Researchers from Japan and Indonesia have pioneered a new method for more accurately estimating the source of weak ground vibrations in areas where one tectonic plate is sliding under another in the sea. Applying the approach to Japan s Nankai Trough, the researchers were able to estimate previously unknown properties in the region, demonstrating the method s promise to help probe properties needed for better monitoring and understanding larger earthquakes along this and other plate interfaces.
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Zealandia: Earth’s Hidden Continent
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2 GNS Science, P.O. Box 30368, Lower Hutt 5040, New Zealand
3 SGEES, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand
4 Service Géologique de Nouvelle Calédonie, B.P. 465, Nouméa 98845, New Caledonia
5 School of Geosciences, University of Sydney, NSW 2006, Australia
Abstract
A 4.9 Mkm
2 region of the southwest Pacific Ocean is made up of continental crust. The region has elevated bathymetry relative to surrounding oceanic crust, diverse and silica-rich rocks, and relatively thick and low-velocity crustal structure. Its isolation from Australia and large area support its definition as a continent Zealandia. Zealandia was formerly part of Gondwana. Today it is 94% submerged, mainly as a result of widespread Late Cretaceous crustal thinning preceding supercontinent breakup and consequent isostatic balance. The identification of Zealandia as a geological continent, rather than a collectio
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New research suggests that early life that evolved out of the ocean depths might have evolved to survive the acidic volcano environments, and it could help scientists understand ancient environments on Mars.
(Photo : Jrivera175 /Wikimedia Commons)
Ijen Volcano houses the most acidic lake in the world, and it is also a source of sulfur, such sulfur creates a chemical reaction that makes the flames in the volcano blue
Many wouldn t consider acidic lakes in the shadow of a volcano as a conducive habitat. However, early creatures that abandoned the sea would disagree.
Early Days of Life
Many vital information on how the earliest days of life on land thrived is lost to us. What geologists know is that roughly 3 billion years ago, during the Mesoarchean Era, the first continents emerged from the oceans and were soon covered in life.