单词	mid-ocean ridge
释义	mid-ocean ridge noun ˈmid-ˈō-shən-  : an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma Example Sentences Recent Examples on the Web As the mid-ocean ridge spreads, Reykjanes cycles through quiet periods, typically lasting 800 to 1,000 years, followed by two or three centuries of spectacular eruptions, which scientists studying Iceland suspect could be starting now. Sasha Warren, Scientific American, 24 Aug. 2022 These openings occur because the area is located along a kink in the mid-ocean ridge, and the cracks form as a result of the two plates moving apart at an odd angle. Sasha Warren, Scientific American, 24 Aug. 2022 The Erta Ale has been erupting constantly for over 50 years and it is believed that as the Erta Ale continues to erupt, a new narrow ocean basin with its mid-ocean ridge will be formed. Uwagbale Edward-ekpu, Quartz Africa, 12 Aug. 2020 The latest boomerang was recorded near the mid-ocean ridge in the Atlantic, where the South American and African tectonic plates slowly inch apart. Maya Wei-haas, National Geographic, 10 Aug. 2020 These two facts generally explain both volcanoes along plate boundaries—like the Pacific Ring of Fire or the mid-ocean ridges—and those at hot spots like Hawaii and Yellowstone. Scott K. Johnson, Ars Technica, 28 Feb. 2020 Earth's longest mountain chain, the mid-ocean ridge, is slowly revealed after sea levels drop by 6,500 feet. Jennifer Leman, Popular Mechanics, 3 Feb. 2020 That could make more sense if mid-ocean ridge eruptions were pumping out extra CO2. Scott K. Johnson, Ars Technica, 8 Feb. 2018 There are submarine volcanoes, along Earth's mid-ocean ridges, that have been erupting longer. Doyle Rice, USA TODAY, 7 May 2018 See More Word History First Known Use 1961, in the meaning defined above
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