细碧岩

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 .

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 .

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 .

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 .

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 .

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 .

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 .

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 .

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 .