Tag: Earth

The plate tectonics that cause earthquakes, build mountains and split continents may have started when Earth was in its infancy, new research finds — significantly earlier than many scientists previously thought.  The new study suggests plate tectonics started more than 4 billion years ago — not long after the planet formed 4.5 billion years ago. In this era, known as the Hadean, Earth was fresh and piping hot, with an ammonia-and-methane atmosphere imbued with enough water to eventually condense into a planet-wide ocean. During this period, Earth cooled enough to…

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Potato-size metallic nodules strewn across the Pacific Ocean seafloor produce oxygen in complete darkness and without any help from living organisms, new research reveals. The discovery of this deep-sea oxygen, dubbed “dark oxygen,” is the first time scientists have ever observed oxygen being generated without the involvement of organisms and challenges what we know about the emergence of life on Earth, researchers say. “When we first got this data, we thought the sensors were faulty, because every study ever done in the deep sea has only seen oxygen being consumed…

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The strongest hurricane to occur this early in the year made landfall in Matagorda, Texas, early Monday morning (July 8) at a Category 1 level on the Saffir-Simpson Hurricane Wind Scale. At 4:00 a.m. local time, Hurricane Beryl roared inland with maximum sustained winds of 80 miles per hour (129 kilometers per hour), bringing with it a , dangerous rise in seawater level — up to seven feet (two meters) in some spots along the Gulf coastline in eastern Texas.  The storm also brought “considerable” flash and urban flooding inland…

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Over 400 million years ago, an upwelling of hot rock from Earth’s mantle wrenched apart the crust in Mongolia, creating an ocean that survived for 115 million years.  The geological history of this ocean could help researchers understand Wilson cycles, or the process by which supercontinents break apart and come together. These are slow, broad-scale processes that progress by less than an inch per year, said study co-author Daniel Pastor-Galán, a geoscientist at the National Spanish Research Council in Madrid.  “It’s telling us about processes in the earth that are…

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Geologists digging into the massive ice sheet of West Antarctica have discovered the remains of an ancient river system that once flowed for nearly a thousand miles. The discovery offers a glimpse into the Earth’s history and hints at how extreme climate change could alter the planet, according to their findings, published June 5 in the journal Science Advances.  “If we think about a potentially severe climate change in the future, we need to learn from periods in Earth’s history where this already happened,” Johann Klages, study co-author and a sedimentologist at the Alfred…

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