流纹岩

According to the fact that dawsonite and ankerite are the authigenic minerals forming at latest in sandstone, CO2 infilling was relatively late, possibly 46.2 ± 2.1 Ma or later.

CO2注入晚于油气大规模充注，最早时间为90Ma，与研究区花岗岩、流纹岩等岩浆岩年龄相差较大。

Rhyolites are a group of extrusive igneous rocks with phenocrysts (visible crystals that grew out of the molten lava) of quartz and alkali feldspar in a glassy to cryptocrystalline groundmass.

流纹岩是一组受挤压火成岩矿，包含了在玻璃基的隐晶质中的石英与碱性长石的斑晶（生在于熔岩外的可见石英晶体）。

The primary formation of the mine is a rhyolite and obsidian flow, full of gas pockets.

主要形成的矿井是一个流纹岩和黑曜石流动，充满了气体的口袋。

In fact, the mine is made up of rhyolite and obsidian that has gas pockets in it, and silica which is necessary for much gemstone production and was carried to its.

事实上，地雷是由流纹岩和黑曜石它已在天然气口袋，这对硅很多宝石生产进行必要的和它的。

This material is a new find from Madagascar. The deposit formed as a rhyolite flow but has been completely silicified.

海洋石是从马达加斯加发现的，它的沉积物是流纹岩，但已完全硅酸化。

Rhyolite is an igneous rock, rich in silica.

流纹岩是火成岩，富有在硅土里。

Rhyolite is the aphanitic equivalent of granite.

流纹岩是花岗岩的隐晶质等同体。

Volcanic rocks within the Sanshui basin display bimodal characteristics and are composed of basalts and rhyolite/trachyte.

火山岩的形成时间具有从内陆向沿海变新的特点，早第三纪三水和珠江口盆地火山岩具有由玄武岩与粗面岩-流纹岩构成的双峰式特点。

On the basis of whole grain evaporation age on single zircons using a double filament for different genetic zircons in metalassenite and metarhyolite of Luoyu formation,Yunkai group,the formation age of volcanic rock is 922 Ma;later geologic events is 643 Ma￣716 Ma or 427 Ma￣473 Ma...

本文采用颗粒锆石分层蒸发法分别对云开群罗罅组变英安岩及变流纹岩中不同成因锆石进行年龄测定，获得该火山岩之形成年龄为922Ma，940Ma；后期地质事件年龄为643Ma～716Ma，427Ma～473Ma及物源区的年龄为1616Ma，2084Ma。

The REE distribu- tion curves of Archaeozoic metamorphic rocks,Proterozoic granite,Tertiary basalt, Mesozoic granite,granite-porphyry,rhyolite,tuff,and gold ores are of right inclinnation, which indicates they enrich LREE and have completely similar Ce negative anomaly.

研究表明：太古代变质岩、元古代花岗岩、中生代花岗岩及花岗斑岩、流纹岩和凝灰岩、第三纪玄武岩及金矿石的稀土配分曲线均为右倾斜型，即富轻稀土，都有十分相似的 Ce 负异常。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。