| 单词 | cratonal |
| 释义 | > as lemmascraˈtonal craˈtonal adj. = cratonic adj. ΘΚΠ the world > the earth > structure of the earth > [adjective] > kratogen kratogenic1934 cratonic1935 cratonal1944 1944 Science 9 June 462/2 The cratonal flexure of the Lower Pennsylvanian miogeosyncline lies west of the Adirondack line. 1991 Sci. Amer. May 54/1 Simultaneously, another type of ore deposit began to form in cratonal regions, the growth centers of continents. < as lemmas |
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