Oceanic basalt

It is shown that the basalts of seamounts in SCSB have a closer affinity to continental basalt than to oceanic basalt .

研究表明，南海海山玄武岩更类似于大陆玄武岩，而与大洋环境中生成的玄武岩差异更大。

The Mantle Dynamic Significance of the Helium Isotope Component of Oceanic Island Basalt

全球洋岛玄武岩氦同位素组成的地幔动力学意义

Geochemistry characters of oceanic island basalt suggest that the slab which descend into the mantle may be mixed with the source area of plume .

大洋岛玄武岩地化特征上的多样性提示，沉入下地幔的板片可能从深部卷入地幔柱的源区。

The former is characterized by oceanic ridge basalt , whereas the latter by para oceanic ridge basalt , both formed in an environment of mid oceanic ridge .

前者具有洋脊玄武岩特征，后者具有准洋脊玄武岩特征，它们形成于大洋中脊环境。

N-type Oceanic Ridge Basalt had been not found in the Garg ê - Litang Ophiolite M é lange Zone in the past 30 years .

甘孜&理塘蛇绿混杂岩带历经30余年的研究与争论，无论持何种观点者，均未能在带中找到N型洋脊玄武岩。

The basalt in the north zone belongs to the alkaline basalt series , enriched in Rb , Th , Ta and Nb , showing that its characteristics are consistent with those of oceanic island basalt .

北带玄武岩属碱性玄武岩系列，南带玄武岩属拉斑玄武岩系列；北带玄武岩富集Rb、Th、Ta、Nb，与洋岛碱性玄武岩稀土曲线一致；

The REE partition pattern of basic lava not only consists of flat curve of mid oceanic ridges basalt but also includes the characteristic of Hawaii oceanic island basalt with LREE abundant type , which reflects this ophiolitic belt mixed ocean crust wrecked with oceanic island fragment .

基性熔岩稀土元素分布模式既有洋脊玄武岩的平坦曲线，又有轻稀土富集型的夏威夷等洋岛玄武岩的特征，反映该蛇绿岩带混杂着洋壳残骸和洋岛碎块。

Association of continental alkaline basalt with oceanic tholeiite and oceanic island basalt in the junction is reasonably interpreted .

较合理地解释了结合带内，大洋拉斑玄武岩、洋岛玄武岩、大陆碱性玄武岩共存的地质特征。