释义 |
Definition of craton in English: cratonnoun ˈkratɒnˈkreɪtɑn Geology A large stable block of the earth's crust forming the nucleus of a continent. Example sentencesExamples - Much of the craton remained stable up to Triassic time, with sedimentary sequences dominated by shallow-water and subaerial sediments.
- Although continents were small, they consisted of stable cratons.
- Mobile belts of various ages seem to have stitched Africa's Archean cratons together by Himalayan-style continental collisions.
- Many workers have interpreted the Zimbabwe craton as vertically accreted crust.
- Scotland lies on ancient continental crust known as the Hebridean craton.
Derivatives adjective Geology It is limited to the east and south by wide cratonic areas, whereas to the west it is bounded by the Andean volcanic arc. Example sentencesExamples - Subsequently, the group expanded its range to encompass all of the Earth's major cratonic blocks.
- The complex defines a series of cratonic fragments related to the collision of the Amazonian and Sao Francisco Cratons.
- Many other mobile belts of various ages crisscross the African cratonic nuclei - these are all ripe for study.
- Finally, small, intraplate events not obviously linked to a cratonic boundary are categorized as ‘hotspots’.
Origin 1930s: alteration of kratogen in the same sense, from Greek kratos 'strength'. Definition of craton in US English: cratonnounˈkreɪtɑnˈkrātän Geology A large stable block of the earth's crust forming the nucleus of a continent. Example sentencesExamples - Although continents were small, they consisted of stable cratons.
- Much of the craton remained stable up to Triassic time, with sedimentary sequences dominated by shallow-water and subaerial sediments.
- Mobile belts of various ages seem to have stitched Africa's Archean cratons together by Himalayan-style continental collisions.
- Many workers have interpreted the Zimbabwe craton as vertically accreted crust.
- Scotland lies on ancient continental crust known as the Hebridean craton.
Origin 1930s: alteration of kratogen in the same sense, from Greek kratos ‘strength’. |