| 单词 | tholeiitic |
| 释义 | > as lemmastholeiˈitic tholeiˈitic adj. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > trap > basalt > other basaltic palagonitic1867 tachylitic1888 tephritic1889 nephelinitic1909 spilitic1911 tholeiitic1922 shoshonitic1937 ankaramitic1971 1922 Q. Jrnl. Geol. Soc. 78 237 The tholeiitic intrusions have produced little thermal alteration of the rocks into which they have been ultimately injected. 1933 Amer. Jrnl. Sci. 225 247 The general thesis is..advanced that the olivine-basalt magma-type is the parent of the alkaline line of descent while the tholeiitic magma-type occupies a similar position with respect to the calc-alkaline rock suite. 1933 Amer. Jrnl. Sci. 225 242 The Deccan Traps and the majority of the plateau basalts which have been studied are of tholeiitic composition. 1967 [see main sense]. 1970 Nature 12 Dec. 1030/2 Geochemists have known for some time that [ocean] ridge basalts tend to be tholeiitic whereas alkali basalts are more likely to be found away from ridges. 1972 F. H. Hatch et al. Petrol. Igneous Rocks (ed. 13) vii. 364 Alkali olivine-basalt magmas can differentiate towards alkali-enrichment; but tholeiitic magmas differentiate towards silica-enrichment. < as lemmas |
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