酸性岩

明确早期175~120（11O）Ma为高钾钙碱性火山岩系列且具向酸性岩系列过渡的特征；

The volcanic rocks formed in early stage , from 175-120 ( 117 ) Ma , are high-K calc-alkali series , with a trend of transition to acid rock series .

锑矿区酸性岩排水产生潜力预测研究

Prediction of Acid Rock Drainage ( ARD ) Generation Potential in an Antimony Mining Area

Th／U比值低，可能指示富钙的酸性岩环境。

And lower Th / U ratio , possibly indicating the environment of Ca rich acidic rocks .

该斑岩带斑岩属钙碱性系列、中酸性岩类。

Porphyry rocks in this belt are intermediate-acid rocks of calc-alkaline series .

亮晶内碎屑砂屑灰岩下石炭统为海相碎屑岩及中酸性岩组合；

Lower Carboniferous is composed of sea facies fragments and mid-acidic component igneous rock .

新疆北部几个金、铜矿区中酸性岩的稀土元素地球化学

REE geochemistry of intermediate-acid intrusive rocks in gold and copper deposit in North Xinjiang

燕山期岩浆岩以中酸性岩为主，喜马拉雅期岩浆岩以酸性岩为主。

Yanshanian magmatic rocks were intermediate-acid rocks , and the Himalayan magmatic rocks were main acid rocks .

我国东部与铁、铜矿床有关的中&酸性岩类成矿专属性的统计分析

Statistical analysis of the metallogenetic specialization of acidic-intermediate igneous rocks related to iron and copper deposits , Eastern China

酸性岩土壤又可再划分为高铅花岗岩和低铅花岗岩土壤两组。

The first group includes those developed from acidic rocks and can be subdivided into high - and low-lead granite soils .

岩石的放射作用热产率以酸性岩类最高，超基性岩类最低。

The heat production in rocks due to radioactivity is highest in the acid rocks and lowest in the ultra-basic rocks .

火山岩层中以溢流相的中基性火山岩为主，局部地段比较发育以酸性岩类为主的次火山岩，中基性火山岩的岩石化学类型属于拉斑玄武岩钠质类型。

Intermediate basic volcanics of overflow facies mainly occurs in volcanic strata , acid rocks dominated sub volcanic rocks is locally developed .

物源分析表明，无序间层粘土岩主要由中性火山碎屑（岩）在原地蚀变、转化而成，而有序间层粘土岩则是由酸性岩蚀变而成。

The results show that the disordered and ordered clay rocks are respectively formed by intermediate and acidic pyroclasts in the sedimentary basins .

后者为中-酸性岩组合，具弧后盆地拉张裂谷活动背景特徵。

Caotangou Group is the combination of intermediate rock-acid rock , showing the background of move of rift valley of basin after island arc .

铜多金属矿床与中酸性岩类有成因联系，银多金属矿床与酸性岩类关系更密切。

The copper polymetallic deposits are genetically related to intermediate-acidic rocks , and the silver polymetallic deposits are more closely related to acidic rocks .

金木达金矿床产于川西北地区阿坝把块西南缘，与中基&中酸性岩脉在空间上有密切关系。

The Jinmuda gold deposit is located in the southwest edge of northwestern Sichuan province , one of important part of Sichuan-Gansu-Shaanxi " gold-triangle " area .

铁质、镍质矿床在基性岩中形成，铜主要与中性&中酸性岩有关。

Iron deposit and nickel deposit formed in basite and ultrabasite rocks , copper deposits in this belt are related to neutral - medium acidic rocks .

区内自上而下明显增强的硅化和扩大的黄铁绢英岩化晕圈，昭示了隐伏的中酸性岩株或次火山岩体的存在。

Increased obviously from top to bottom of the silicification and broadened the pyrite-sericite-quartz alteration halo in this ore area shows the existence of hidden neutral-acid stock and subvolcanic rock mass .

该卡林型金矿的主要特征是：（1）分布于丰山斑岩体周围的中酸性岩脉发育区；

The deposit is of the following characteristics : ( 1 ) Gold mineralization is distributed within the developed area of the intermediate-acidic dike in the periphery of the Fengshan porphyry body ;

山门银矿区出露的中生代侵入岩是一套由基性岩、中性岩、酸性岩组成的复式侵入体。具有规模大、侵入期次多、演化时间长的特点。

The outcropped Mesozoic intrusive rock is a composite intrusion which consists of basic , intermediate and acid rocks , characterized by the large scale , multiphase intrusion , and with long evolution .

依此计算了中国11种酸性岩、19种中性（含正长）岩、8种镁铁质岩和4种超镁铁质岩的10个主成分和68个微量元素的平均含量。

On the basis of our results , abundances of 10 major compositions and 68 trace elements of 11 acidic rocks , 19 intermediate rocks , 8 basic rocks and 4 ultramafic rocks have been calculated .

岩相学、岩石化学、稀土元素、微量元素和同位素研究表明，该造山带侵入岩以辉绿岩岩床、岩株和岩墙为主，仅有少数中-酸性岩岩株。

Studies involving petrography , petrochemistry , rare earth elements , trace elements and isotopes indicate that the intrusive bodies of the orogen are dominated by diabasic sills , stocks and dykes with few intermediate to acidic stocks .

研究表明，冲绳海槽火山岩均属亚碱性系列，基性岩具有拉斑玄武岩系列和钙碱性系列的过渡性，中、酸性岩多属钙碱性系列；

The studies show that the rocks in Okinawa Trough is of a subalkaline rock series . The basic rocks belong to a transitional form between tholeiite series and calc alkalic series while most of the intermidiate rocks and acid rocks belong to calc alkalic series .

新西兰陶波酸性火山岩Sr－O同位素体系

Sr-O Isotopic System of Taupo Acidic Volcanic Rock in New Zealand

陆内裂谷、裂陷区富碱高钠中基中酸性火山岩有关的AuCuFe成矿亚系列；

Au-Cu-Fe subseries related to high-Na and alkaline-rich intermediate-basic or intermediate-acid volcanic rocks of intracontinental rift (ⅲ);

这些特征表明，Jade热液活动区的热液硫化物矿床的成矿物质来源于下伏的酸性火山岩。

All these characteristics indicate that the acidic lava is maybe the main source of hydrothermal sulfide deposits in the Jade area .

利用岩石薄片X衍射技术，在松辽盆地深层富碱酸性火山岩中识别出特征的碱性暗色矿物&钠铁闪石，从而确定其为碱流岩。

Using thin section X-ray diffraction techniques , his paper identified arfvedsonite in volcanic rocks from Songliao Basin , and thus confirmed that the volcanic rocks are composed of pantellerite .

酸性火岩稀土总含量大，高于地壳的REE值。

The total content of REE in the acid volcanic rock is high , being higher than the ∑ REE value of earth crust .

从基性火山岩到酸性火山岩，随着SiO2的增加，轻重稀土分馏程度越来越高。

With the increase of SiO2 , from the basic volcanic rock to the acid volcanic rock , the fractional degree of HREE and LREE becomes more and more high .

基于实验岩石学成果，论述了无负Eu异常的中酸性火成岩类（正长岩、二长岩、石英闪长岩类）形成于加厚陆壳底部（或山根带）。

Based on the data from experimental petrology , the acid-intermediate igneous rocks ( synitic , monzonitic , QY-dioritic ) without negative Eu-anomaly seem to have formed at the base of thickened crust or in the mountain root zone .

在内带发育幔源型碱性玄武岩浆演化系列的基性&中酸性侵入岩，伴生有矽卡岩型Cu、Fe、S、Au矿床。

In the inner belt , there are mantle derived basic to intermediate acid intrusive rocks resulting from the evolution of alkaline basaltic magmas , in which there occur skarn Cu , Fe , S and Au deposits .