2、

Adakite can be formed diversely. It may be classified into the following six types: ① typical adakite, which is derived from potassium-poor tholeiite or MORB and usually formed by subducted slab melting;

埃达克岩具有多样性,大体可分为下列几种:①典型的埃达克岩(adakite),源于贫K的拉斑玄武岩,大多是由俯冲板片熔融形成的;

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3、

The basic, intermediate, acidic lava-and associated volcaniclastic rock are of widespread occurence, which are dominanted by tholeiite, alkali-lime and alkaline volcanic series, and some ultra-alkaline volcanic rock.

基性、中性、酸性熔岩和火山碎屑岩均有,以拉斑玄武岩、钙碱性火山岩和碱性火山岩系列为主,极少量过碱性火山岩。

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4、

The komatiite displays a geochemical trend from ultramafic to mafic, and the tholeiite shows a geochemical trend from rich Mg to rich Fe. The felsic igneous rock overlying the komatiite series displays a calc alkaline trend.

科马提岩显示了从超镁铁质到镁铁质地球化学趋势,拉斑玄武岩具有从富镁到富铁的趋势,而上覆长英质火山岩则遵循钙-碱趋势。

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5、

The REE of calc-alkali basalt and tholeiite are characterized by lower amounts of REE and LREE-depleted distribution pattern and which reflect that the basalts were formed by the partial melting of LREE-depleted and slightly HREE-rich mantle.

钙碱性玄武岩系列和拉斑玄武岩系列玄武岩具有低的REE含量和亏损的LREE配分型式,表明它是由LREE亏损和HREE略有富集的地幔部分熔融形成;

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6、

At the Paleo-Mesoproterozoic era, the meta-basic-ultrabasic rocks on eastern Hainan are oceanic low K arc tholeiite with the features of mafic-basaltic komatiite evidently, originated from highly depleted mantle and are formed under the tectonic setting of volcanic arc.

古中元古代时,琼中屯昌变基性-超基性岩,为大洋型火山岛弧低钾拉斑玄武岩,明显具有镁铁质-玄武质科马提岩特征,来源于高度亏损的地幔;

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7、

The studies show that the rocks in Okinawa Trough is of a subalkaline rock series. The basic rocks belong to a transitional form between tholeiite series and calc alkalic series while most of the intermidiate rocks and acid rocks belong to calc alkalic series.

研究表明,冲绳海槽火山岩均属亚碱性系列,基性岩具有拉斑玄武岩系列和钙碱性系列的过渡性,中、酸性岩多属钙碱性系列;

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8、

Tholeiite has a zircon SHRIMP U-Pb age of 352 Ma, suggesting that the formation of the ophiolites may have continued till the Late Devonian-Early Carboniferous.

拉斑玄武岩SHRIMP锆石年龄352Ma,说明蛇绿岩的形成可持续到晚泥盆世&早石炭世。

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9、

The amphibolite and basic granulite may be comparable to the world's metamorphic tholeiite.

斜长角闪岩和基性麻粒岩可与世界变质拉斑玄武岩对比.

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10、

Abundant copper material was derived from volcanic rock series ( olivine tholeiite ) in the rift.

丰富的铜质来自巨厚的裂谷火山岩系 ( 橄榄拉斑玄武岩 ).

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11、

Basic suite consists of tholeiite and alkali-basalt.

基性岩套由拉斑玄武岩-碱性玄武岩组成.

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12、

The REE of breccia biotite schist represents feature of oceanic tholeiite.

角砾状黑云母片岩的REE具有洋脊拉斑玄武岩特征;

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