火山岩

The second episode is here re-defined as the "real" Linzizong volcanic successions that comprise, from bottom to top, Dianzhong, Nianbo and Pana Formations.

根据原始定义，后者才是"真正的"林子宗火山岩，并可由老至年轻分为典中组、年波组及帕那组等三个火山地层单元。

The Pana volcanic rocks of the Linzizong Group in Zhaxue area, Linzhou County, Tibet are mainly composed of rhyolitictrachy lavas and volcanoclastic rocks.

分布于西藏林周县扎雪地区的林子宗群帕那组火山岩，主要由流纹质-粗安质熔岩和火山碎屑岩组成。

The quartz-monzonite porphyry intrusived in the Pre-Ordovician Songduo Group and Carboniferous-Permian Laigu Formation, unconformably covered by the volcanic rocks of Pana Formation.

石英二长斑岩侵入于前奥陶纪松多岩群和石炭-二叠系来姑组中，并被帕那组火山岩呈火山沉积不整合覆盖。

Its geochemical characteristics (14.55% of Al2O3 8.78% of K2O+Na2O, 5.77% of K2O, K2O/Na2O=2.07) suggest that the Pana Formation volcanic rocks belong to highAl, highK calcalkalineshoshonite series.

岩石总体上反映出高Al高K的特点，Al2O3的质量分数平均为14.55%，K2O+Na2O的质量分数平均为8.78%，K2O质量分数平均为。77%，K2O/Na2O比值平均为2.07，显示了高钾钙碱性-钾玄质火山岩的特征。

Volcanic rock is quite different from sandstone and carbonate rock in diagenetic model, petrology and reservoir characterization.

火山岩在成岩模式、岩石学和储集层特征上，与砂岩、碳酸盐岩有很大区别。

A systematic study of the petrology and geochemistry of volcanic rock located in Sanbaishan basin of South Jiangxi are gived.

对赣南三百山盆地晚侏罗世武夷群火山岩的岩石地球化学特征进行了系统研究。

The conclusion is that volcanic rock, phosphorite, etc. contribute to the formation of the crust.

分析结果表明，调查区内的火山岩及磷块岩对结壳形成的贡献大。

The first type is different kinds of rocks including sedimentary rock, metamorphic rock and volcanic rock among which black mudstone, black shale, clay, slate, phyllite, granite, basalt, andesite and volcanic ash are the best except some chemically depositional rock such as salt rock, gypsum, limestone.

第一类是自然界各种不同类型的岩石，包括沉积岩、变质岩和火山岩，其中以黑色泥岩、黑色页岩、粘土、板岩、千枚岩、花岗岩、玄武岩、安山岩及火山灰为最佳，但不包括某些化学沉积岩，如盐岩、石膏、石灰岩。

The gigantic pillow lava, characterized by huge pillow bodies (5 to 8 m) and diverse shapes, constitutes a distinctive landscape of volcanic rocks.

辽西义县许家屯巨型枕状熔岩产在义县旋回第二亚旋回火山岩沉积夹层中。

Volcanic rocks are of the high-K calc-alkaline series rock association, composed mainly of ryholitic and trachytic dacitic rocks, and the central intrusive body is olivine-andesite-trachytic quartz syenitic porphyrite.

火山岩为以流纹质和粗面英安质为主的高钾钙碱性系列岩石组合，中央侵入体为橄榄安粗岩系列石英正长斑岩，它们的A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。