alkali basalt
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English
Noun
alkali basalt (plural alkali basalts)
- (geology) An alkaline variety of basalt.
- 2003, R. R. Hillis, Evolution and Dynamics of the Australian Plate, page 213:
- The largest central volcanoes (Peak Range and Springsure) occupy the 'swell' in that arc, which peters out southwards into tholeiitic and finally subsurface alkali basalt intrusives (Roma drilling results).