olivine basalt

基本解释

The rocks of the up member are andesite, basalt-andesite and olivine basalt.
上段主要为安山岩、玄武安山岩和橄榄玄武岩。
Leucite tephrite was derived from the more enriched mantle source with lower degree of partial melting of mantle source than alkaline olivine basalt.
相对于碱性橄榄玄武岩，白榴石碱玄岩来自于更加富集的地幔源区，其地幔的部分熔融程度相对较低。
Abundant mantle-derived xenocrysts such as olivine, orthopyroxene and clinopyroxene can be found in the basalt.
该玄武岩中含有丰富的幔源橄榄石、斜方辉石和单斜辉石捕掳晶。
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