细碧岩
- 网络SPILITE
![细碧岩](../cache/1188625.jpg)
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其余硅质岩、碧玉岩、细碧岩、凝灰质砂岩为高阻低极化,视极化率一般在1%~3%。
The other rocks , such as silicalite , jaspilite , spilite , tuffaceous sandstone , show high resistivity and low chargeability ( 1 % ~ 3 % ) in nature .
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这些火山岩所含的次生矿物群大致符合细碧岩或角斑岩之定义。
The mineral parageneses of the volcanic rocks are generally consistent with that of spilite or keratophyre .
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该火山岩系底部超镁铁岩的REE分布模式为轻稀土富集型,有小的Eu正异常;细碧岩-石英角斑岩也是轻稀土强富集型,Ce和Eu有轻微的正异常;
REE patterns of spilites , keratophyres and ultramafic rocks under the volcanic rocks show strong enrichment in LREE with unobvious Ce and Eu positive anomalies .
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矿石类型为蚀变细碧岩型和石英脉型。
Its ore types include altered spilite and pyrite quartz - sericite altered and quartz vein .
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与深海相放射虫硅质岩相伴,则夹有玄武岩(细碧岩)层。
Thin basalt ( spilite ) layers are often interbedded in those deep marine radiolaria-bearing siliceous rocks .
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广西北部龙胜地区丹洲群广泛发育一套细碧岩和镁铁-超镁铁质岩石。
A large number of spilitic and mafic ultramafic rocks exist in the Longsheng region of northern Guangxi .
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细碧岩微量元素及稀土元素分配型式类似岛弧拉斑玄武岩。
The pattern distributed of rare elements and REE in spilite is analogous to that of tholeiite in island curve .
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主要由细碧岩、角斑岩及火山碎屑岩组成,其中有硅质岩、灰岩及碎屑岩夹层或凸镜体。
It mainly consists of spilite , keratophyre and volcanic clastics , intercalated with siliceous rocks , limestone and clastic rocks or lens .
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细碧&角斑岩系一般分为细碧岩、斑岩和石英角斑岩三类。
Spilite-keratophyre sequence is generally divided into spilite , keratophyre and quartz keratophyre .