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单词 craton
释义

craton

noun

cra·​ton ˈkrā-ˌtän How to pronounce craton (audio) ˈkra- How to pronounce craton (audio)
: a stable relatively immobile area of the earth's crust that forms the nuclear mass of a continent or the central basin of an ocean
cratonic
krə-ˈtä-nik How to pronounce craton (audio)
krā-
kra-
adjective

Example Sentences

Recent Examples on the Web The first is the impact debris itself, which indicates that the Pilbara Craton was struck right at the onset of a transition that ultimately resulted in the formation of a craton. John Timmer, Ars Technica, 11 Aug. 2022 By analyzing the samples, analysts identified part of the North Atlantic craton, a remnant of the Earth’s ancient continental crust that stretched from Labrador to Scotland. Fox News, 24 Mar. 2020 What went where: The landmass was likely centered around the North American Plate’s craton, which may have been smashed against what’s now East Antarctica and southern Africa. Gemma Tarlach, Discover Magazine, 12 June 2019 For instance, East Antarctica is a patchwork of old cratons and younger orogens. Avery Thompson, Popular Mechanics, 8 Nov. 2018 By studying the amount of cratons and orogens, researchers can compare the continental plates beneath Antarctica to other regions around the world. Avery Thompson, Popular Mechanics, 8 Nov. 2018 But unlike other cratons, East Antarctica didn’t seem to experience much in the way of seismic activity. Brigit Katz, Smithsonian, 6 June 2018 This section of the continent is known as a shield or craton, a very old and stable portion of the continental crust. Brigit Katz, Smithsonian, 6 June 2018 There are some found outside those cratons (such as the kimberlites of Kentucky and Arkansas) but they are still typically found where the rocks are old. Erik Klemetti, WIRED, 5 May 2017 See More

Word History

Etymology

German Kraton, modification of Greek kratos strength — more at hard

First Known Use

1944, in the meaning defined above

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更新时间:2024/12/23 20:49:15