流纹岩

The tests and studies on the rhyolite filtering material show that the functions of the rhyolite material are superior to that of the arenaceous quartz, and the rhyolite flitering material is worth further studying and developing.

对流纹岩滤料的初步试验研究表明，流纹岩滤料的性能明显优于石英砂，是比较理想的天然无机滤料，具有进一步研究开发价值。

The rock types include rhyolite,dacite and sedimentary volcaniclastic rocks,among which the lava tuff breccia was newly discovered in the 1∶ 50 000 region.

岩石类型为流纹岩、英安岩和沉火山碎屑岩，其中的熔结角砾凝灰岩是本次 1∶ 5万区调中的新发现。

The research results indicate that the volcanic rocks in the studied abea are composed of two different kinds of association: Tholeiitic series and calc-alkaline series (basalt, andenite, dacite and rhyolite ).

结果表明，研究区火山岩由拉斑系列大洋玄武岩和钙碱性系列岛弧玄武岩、玄武安山岩、安山岩、英安岩和流纹岩组成。

Firstly, the volcanics and shaly sand were separated with FMI static images and conventional logging data. Then, the image characteristics of all typical volcanics were analyzed with the dynamic FMI images to establish the FMI image patterns of volcanic lava (including rhyolite, dacite, andesite, and basalt) and volcaniclastic rock (including volcanic breeds and tuff).

首先利用FMI静态图像和常规测井曲线将砂泥岩与火山岩区分开来；然后利用FMI动态图像分析了火山岩各种岩性的图像特征，归纳总结出火山熔岩类（流纹岩、英安岩、安山岩、玄武岩）和火山碎屑岩类的FMI图像模式。

The lava includes sub-alkali and alkali series. The former includes picrite-basalt, basalt, basaltic andesite, andesite, dacite and rhylite etc; the latter includes tephrite, trachybasalt, basaltic trachyandesite, trachyandesite, trachyte and pantellerite etc.

其中熔岩类有亚碱性系列和碱性系列，前者包括苦橄玄武岩、玄武岩、玄武安山岩、安山岩、英安岩、流纹岩等，后者有碱玄岩、粗面玄武岩、玄武粗安岩、粗安岩、粗面岩、碱硫岩等。

The Mesozoic volcanic rocks are mainly located in Huoshiling Formation and Yingcheng Formation. The former consists of basaltic andesite, trachyandesite and dacite, the latter is composed of basaltic trachyandesite, trachyandesite and rhyolite. The cathodoluminesence images and high Th/U ratios of the zircons suggest their magmatic origin.

松辽盆地南部中生代含火山岩地层主要包括火石岭组和营城组，其中火石岭组火山岩由玄武安山岩－粗安岩－粗面英安岩组成，营城组火山岩由玄武质粗面安山岩－粗面安山岩－流纹岩组成。

The geochemical characteristic of rhyolitic rocks is also similar to that of rhyolite in the bimodal volcanics of the typical back-arc basin.

流纹质岩石地球化学特征也与典型弧后盆地双峰式火山岩中的流纹岩相似。

The rocks from Sharp Island are of volcanic origin. One of the examples is the rhyolite formed by viscous lava spewed from the volcano vents can be found near the caldera edge. The southern part of Jin Island was being eroded by waves which led the head land was separared from the main rock to form sea stack called "Tiu Chung Rock". As the erosion proceeds, there is a 30m high long sea arch developed called "Tiu Chung Arch".

桥咀洲的岩石大多源於火山，其中包括流纹岩，由附近火山喷道喷出的稠熔岩形成，属破火山口边的产物；吊钟洲南面长期受著海浪拍打侵蚀，使岬角与岩体分离形成海蚀柱名为「吊钟岩」，因海浪持续的侵蚀，岩中续渐形成一个高30米的长形海蚀拱「吊钟洞」。

Petrological and petrochemical characteristics show that there exist such volcanic and subvolcanic rock types as basalt, iddingsite olivine basalt, olivine basaltic trachyandesite, trachybasalt, latite, trachydacite, trachyte, rhyolite, tuff and granite-porphyry in northeast Jiangxi Province. The volcanic rocks can be subdivided into high K calc-alkaline series, shoshonite series and alkaline basalt series.

岩石学及岩石化学特征表明，赣东北地区早白垩世火山岩及次火山岩主要有：玄武岩、伊丁石化橄榄玄武岩、橄榄玄武粗安岩、粗面玄武岩、安粗岩、粗面英安岩、粗面岩、流纹岩、凝灰岩及花岗斑岩等，可划分为高钾钙碱性、橄榄安粗岩和碱性玄武岩3个系列。

Rhyolitic volcanic rocks are generally characterized by rich alkali, silicon, aluminum,and poor calcium, magnesium. They have relatively high Rb,Th and rather low Ba,Sr,Ti,P,and exhibit obviouslv negative europium anomaly (δEu=0.16~0.44).The εNd values of the rhyolitic volcanic rocks range from -5.93 to -2022.Basalts and rhyolites in different cycles show clear geochemical variance.

流纹质岩石总体具富碱、富硅、富铝，贫钙、贫镁特征，其Rb、Th等元素的含量较高，而Ba、Sr、Ti、P等元素含量则明显偏低，并具显著的铕负异常（εEu=0.16'0.44），岩石的εNd值变化于-5.93~~-2.22.I、II旋回玄武岩和流纹岩在地球化学特征上均具明显变异。

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％。