| 单词 | simatic |
| 释义 | > as lemmassiˈmatic siˈmatic adj. [probably after German simatisch (1915 or earlier)] of, relating to, or constituting the lower layer (the sima) of the earth's crust. ΘΚΠ the world > the earth > structure of the earth > [adjective] > crust > parts of oceanic1863 sial1922 simatic1922 1922 Verhandelingen van het Geologisch-Mijnbouwkundig Genootschap voor Nederland en Koloniën 1920–22 5 117 It is supposed by the greater number of geologists that the plastic simatic magma in its inner regions is not at rest. 1942 R. A. Daly Floor of Ocean ii. 59 The oceanic sectors of the earth are characteristically simatic... Also simatic is any vitreous basalt which may form ‘pockets’ in the crust. 1955 Sci. Amer. Sept. 62/1 Because granite is the chief sialic rock and basalt the chief simatic one, the continents are most commonly described as granitic and the ocean basins as basaltic. 1971 Proc. 2nd Symp. Upper Mantle Project (Council Sci. & Industr. Res., New Delhi) p. xix Resting on the simatic crust, the continental blocks move, as if riding on the conveyor belt. 2012 H. Frankel Continental Drift Controv. I. ii. 56 They formed on the leading edge of drifting continents as they plowed through the simatic ocean floor. < as lemmas |
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