A new study suggests that over the past 4.5 billion years, primitive solar energy particles have lurked in the ดาวน์โหลดสล็อต xo Earth's core.The researchers made a discovery by analyzing ancient particles within an iron meteorite. which comes from a space rock with an iron core As the world does now This makes meteorites a good substitute for the internal organs of our planet. Researchers write that the meteorite has "Too much helium, solar and neon," which are noble or colorless, odorless, tasteless and non-flammable gases and belong to group 18 on the periodic table, the researchers wrote in the study.Past research has linked exposure to the solar wind. which is a stream of plasma and charged particles flowing from the sun. To the altitude of helium and neon And the ratio shown Therefore, it is possible that when the planets in the solar system were still forming,
the solar wind irradiated this meteor with noble gas particles, which then became embedded in the meteorite's metal. In the same way "The Earth's core may also include noble gases from the sun," the researchers wrote in the study.Over millions of years, these noble gases have likely spread from the core and into the Earth's mantle, the layer between the core and the upper crust.The meteorite, which was discovered in 1927 in Washington County, Colorado, fell into a type of iron meteorite. The rare "ungrouped", which accounts for 5% of known meteorites discovered on Earth. Most of the meteorites are remnants of large asteroids. which formed a metallic core during the first 1 million to 2 million years of the solar system.However, the Washington County iron meteorite is larger than most meteorites of its class.
It originally looked like a metal plate about 5.9 inches by 7.8 inches (15 by 20 centimeters) in diameter and 2.3 inches (6 cm) thick and weighing about 12.5 pounds (5.7 kilograms), according to a 1928 report in the journal American Mineralogist.In the 1960s, research found that a meteorite in Washington County had anomalous isotope helium and neon - different elements with different numbers of neutrons in the nucleus. It is seen that these isotopes have a ratio similar to that seen in the solar wind.For this new study The researchers studied a few meteorites in Washington County, including one 1.1-inch (3-cm) long slab.The team used the noble gas mass spectrometer to measure the isotope ratios of the noble gases. The researchers confirmed the isotope ratios of helium and neon as common for those from solar wind.
However, determining which noble gas in a meteorite comes from the solar wind compared to others is a tricky business. For example, noble gases may come from elsewhere in the universe.Manfred Vogt, a postdoctoral researcher at the Institute of Earth Sciences at Heidelberg University in Germany, said: "The measurements must be exceptionally accurate and precise to distinguish the solar signature from the dominant cosmic noble gases.It is likely that solar wind particles in the early solar system were trapped in the substrate material that eventually became asteroids, the team said. asteroid The Earth's iron core probably went through a similar process when it formed. The researchers said. To further investigate this idea, the team studied records of solar wind helium and neon isotopes found in igneous rocks from volcanic eruptions on oceanic islands such as Hawaii in the Pacific and reunions in the Indian Ocean.
The rocks they studied were from a special volcano powered by plumes deep within the Earth's mantle. Researchers say these plumes have a high ratio of solar gases. This distinguishes them from the shallow volcanic mantle activity seen on ridges in the Central Ocean, which has a low solar gas ratio.Researchers now have a series of evidence that the Earth has solar noble gases in its core and inner layers. As a result, the iron-clad Washington County meteorite carries noble gas from the sun, so it is likely that the Earth's iron core is, too. And noble gases from the sun have been found in volcanic rocks that originate deep in the mantle. This indicates that some solar particles hanging in the Earth's core have migrated to the mantle.If the Earth's core contains "only 1% to 2% metals with elements similar to the Washington meteorites", that could "explain the signatures of various gases. The discovery suggests that the core influences the geochemistry of the mantle in a previously unknown way.
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