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Chicxulub collision sent hot seawater roiling through Earth’s crust ...?

Chicxulub collision sent hot seawater roiling through Earth’s crust ...?

Web题型分析 ：主旨题. 原文定位： OK, but did you know there was an earlier extinction— far greater than the one that killed off the dinosaurs? It was what we call the Permian extinction…. 选项分析 ：. 文章先 用恐龙灭绝来引入较其更早的大灭绝称之为二叠纪大灭绝（ Permian extinction ） 且后文 陈 述二叠 纪 大 灭绝产生 可能的原因 ... Web2 days ago · March 25, 2024 01:16 PM. A n airplane-sized asteroid is set to pass between the Earth and the Moon on Saturday afternoon at about 3:51 p.m. EST. An enormous asteroid will pass between the orbits ... cool laser cutting projects WebAug 17, 2024 · The 12-kilometer-wide asteroid that smashed into what’s now Mexico’s Yucatan Peninsula, forming the Chicxulub Crater, blasted tiny particles of debris into the atmosphere, plunging the planet into a frigid 18-month-long night followed by a chilly five to 10 years. ... “I think it's an impact crater; it has all the morphology of it ... Mar 15, 2024 · cool last names and meanings The Chicxulub crater (IPA: [tʃikʃuˈlub] (listen)) is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is offshore near the community of Chicxulub, after which it is named. It was formed slightly over 66 million years ago when a large asteroid, about ten kilometers (six miles) in … See more In the late 1970s, geologist Walter Alvarez and his father, Nobel Prize-winning scientist Luis Walter Alvarez, put forth their theory that the Cretaceous–Paleogene extinction was caused by an impact event. The main evidence … See more The form and structure (morphology) of the Chicxulub crater is known mainly from geophysical data. It has a well-defined concentric multi-ring structure. The outermost ring was … See more In September 2007, a report published in Nature proposed an origin for the asteroid that created the Chicxulub crater. The authors, See more • Barberton Greenstone Belt • List of impact craters on Earth • List of possible impact structures on Earth • Nadir crater • Permian–Triassic extinction event See more A 2013 study published in Science estimated the age of the impact as 66,043,000 ± 11,000 years ago (± 43,000 years ago considering systematic error), based on multiple … See more Geophysical data Two seismic reflection datasets have been acquired over the offshore parts of the crater since its discovery. Older 2D seismic datasets have … See more Pre-impact geology Before the impact, the geology of the Yucatán area, sometimes referred to as the "target rocks", consisted of a sequence of mainly Cretaceous limestones, overlying red beds of uncertain age above an unconformity with … See more WebJun 11, 2016 · This apocalyptic tale has been described in countless books and magazines ever since the asteroid impact theory was first put forth in 1980. The identification of … cool laser hair removal

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