钙长岩

Pyroxene grains in gabbroic anorthosite,troctolite,microporphyritic crystalline impact melt breccia,and Ti-bearing clasts are mainly low-Ca pigeoniteEn_(63Fs_(32)Wo_5,En_(66)Fs_(23)Wo_(11),En_(55)Fs_(38)Wo_7,and En_(57)Fs_(35) Wo_8,respectively,and those in anorthositie gabbro,gabbro,and the matrix display a wide range of compositionEn_(31～33Fs_(35～48) Wo_(19～34),En_(18～48)Fs_(23～51)Wo_(24～38)+En_(1～9)Fs_(65～86)Wo_(14～26),En_(11～53)Fs_(23～63)Wo_(6～36),respectively,mainly occurring as pigeonite,augite, and trace amounts of pyroxferroite.

辉长质斜长岩、橄长岩、微斑熔融角砾岩等岩屑和含钛玻屑中的辉石相对贫钙，主要为易变辉石(分别为En63 FS32 WO5，En66FS23WO11，En55FS38Wo7和En57FS35WO8)，而斜长岩质辉长岩和辉长岩岩屑中的辉石和晶屑辉石的成分变化比较大(分别为En31～33 FS35～48 WO19～34，En18～48 FS23～51 WO24～38+En1～9 FS65～86 WO14～26和En11～53 FS23～63WO6～36)，为易变辉石和普通辉石，以及少量三斜铁辉石。

Based on plentiful isotopic dating data and geological studies, the authors, in this paper, discuss the geological meanings of the two isotopic ages given by Lapierre et al., and conclude:① Mesozoic volcanic activities in Zhejiang are most frequent in 130～83 Ma, that is, from the early to late Cretaceous but not the late Jurassic;② The Jiande and Moshishan groups are nearly in the same period and not in an upper—lower stratigraphic relationship with each other;③ The period of 110～100 Ma is a transitional stage from the early high-K calc-alkaline dacite—rhyolite associated with diorite—granodiorite） to the late basalt—rhyolite（associated with K-feldspar granite—alkali granite）.

本文就Lapierre等文中124 Ma和97 Ma两个年龄的地质意义、幕次划分以及浙西与浙东火山岩时代对比作出评论，并厘定浙江中生代火山岩时代归属，提出：①浙江中生代火山活动时代为132～83 Ma；②浙西建德群与浙东磨石山群火山岩并不存在上下关系，地质接触关系、古生物组合和大量同位素定年数据都不支持Lapierre等的浙西与浙东火山活动幕次的对比方案；③ 110～100 Ma为早期高钾钙碱性英安岩—流纹岩（伴生闪长岩—花岗闪长岩）向晚期玄武岩—流纹岩（伴生钾长花岗岩—碱性花岗岩）过渡的转折期。

Below 1100℃, the amount of argon released from irradiated samples is in an order of: plagioclase rock＞striped migmatite＞granite＞garnetiferous mica schist＞calciummuddy shale＞basalt.

在1100℃之前，辐照样释放的氩气量按顺序排列为：斜长岩＞条带状混合岩＞花岗岩＞含石榴石云母片岩＞钙泥质页岩＞玄武岩。

The formation process of the rocks is divided for thefirst time into three cycles corresponding to J2, J3, and K1, respectively, and each cycle into early,middle, and late periods based on intruding contact relationship among different types ofgranitoids.3. A detailed study on the petrological characteristics of different cycles of theMesozoic granitoids supports classification of the rocks into three lithological associationsincluding A-type, high-K calc-alkaline, and calc-alkaline granitoids, of which the first associationbelongs to alkaline series, and the others belong to calc-alkaline series. It is shown that thelithologies change from diorite, quartz monzonite, and granodiorite to monzonitic graniteand syenogranite with periods from early to late in each cycle.4. A preliminary summarization hasbeen made on the evolution characteristics of the rocks.

首次将中生代花岗岩类划分为J2旋回、J3旋回、K1旋回等三个旋回，并依据不同岩石类型间的侵入接触关系，将每个旋回又划分为早、中、晚三期。3、在详细研究区内中生代不同时期花岗岩类岩石特征的基础上，首次将区内中生代花岗岩类划分为碱性系列碱质A型花岗岩类以及钙碱性系列高钾钙碱性花岗岩类和钙碱性花岗岩类等二个系列三种岩石组合类型，确定每个旋回从早期到晚期，岩石均具有从闪长岩、花岗闪长岩、石英二长岩-二长花岗岩-正长花岗岩演化的趋势。4、初步总结了区内中生代花岗岩类的演化特征。

The thermodynamic calculations of the Gibbs free energies for typical multiple phase equilibria in silicate systems were performed,including (1)melting reactions of silicate reactant in processing of the glass-ceramics;(2)sintering reactions in utilizations of nepheline syenite and high- flyash;(3)crystallizing reactions of tobermorite and xonotlite .

对硅酸盐体系的典型多相平衡反应进行了热力学计算，包括：(1)微晶玻璃制备过程中的硅酸盐熔融反应；(2)霞石正长岩和高铝粉煤灰利用技术中的硅酸盐烧结反应；(3)S iO2-CaO-H2O体系和KA lS i3O8-CaO-H2O体系雪硅钙石、硬硅钙石的水热晶化反应；(4)高铝粉煤灰和霞石正长岩烧结产物的溶解反应；(5)Na[A l4]-A l3-H2O体系和Na2SO4-Ca2-H2O体系中α-A l3和CaSO4.2H2O的析晶反应。

Study on the petrochmical,trace element chemical,REE geochemical and Pb isotopic geochemical characteristics of the Tongshan intrusive indicates that the quartz diorite,granodiorite and adamellite are products of three stages of the same periodfrom only one magmatic source.

通过岩石化学、微量元素地球化学、稀土元素地球化学、铅同位素地球化学特征研究表明，铜山石英闪长岩、花岗闪长岩、二长花岗岩是同一岩浆源同一时期三个侵入阶段的产物，铜山岩体幔壳同熔型的复式岩体，属太平洋钙碱性岩石系列。

This thesis studies the volcanic tectono-petrofacies, petrology, mineralogy, geochemistry, isotopic chronology, stratum and high-precision SHRIMP zircon U-Pb datings of the Mt.Yandangshan volcano-intrusive complex, and concludes that: Yandangshan volcanic rock units belong to high-K calc-alkaline acid rock associations, mainly ryholitic and trachytic dacitic in composition. They have A/CNK values of 0.9-1.2 (i.e., aluminium saturation and supersaturation), enriched LREE and LILEs and depleted HFSE. Their 8Eu values are 0.11-0.32, indicating a evident fractional evolution of plagioclase crystallization. Their ∑REE varied very limitedly,(87~Sr/(86)Sri ratios and eNd values are 0.7086～0.7095 and -10.20～-9.96 for volcanic rocks, and 0.7087~0.7095 and -7.6～6.92 for the central intrusive facies syenite, which means that all the igneous rocks from Mt. Yandangshan are evolutional products of magmas with the same source, and that they derived mainly from crust, but mixed with mantle components.

本文从火山构造岩相学、岩石学、矿物学、地球化学、同位素年代学、地层学等方面出发，同时结合高精度SHRIMP锆石U-Pb定年，对雁荡山火山岩进行了系统的研究，确定雁荡山火山岩为一套以流纹质和粗面英安质为主体的高钾钙碱性酸性岩石组合，A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型；富轻稀土元素和大阳离子亲石元素、相对亏损高场强元素：负铕异常明显，δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用：岩石样品的∑REE变化有限，火山岩样品的~(87Sr/~(86)Sr_i为0.7086～0.7095，εNd为-10.20～-9.96，中央侵入体石英正长岩~(87Sr/~(86)Sr_i为0.7087～0.7095，εNd为-7.6～-6.92，表明它们是同源岩浆分异演化的产物，物质来源主要为陆壳，但有地幔物质参与。

Most of small intrusive bodies are stocks or dikes, and each of the dimension is less than 1km2 ; they are mostly granite-porphyry、porphyritic-granite、monzogranite,a small amouts of them are quartz diorite or diorite; the chemical characters are high content of SiO2、K2O and low content of Mg and CaO, on the SiO2-K2O diagram all the samples fall in the field of high-K calc-alkalic series and shoshonite series.

小岩体多呈岩株或脉状产出，出露面积多数在1km2以下；岩性主要为花岗斑岩、似斑状花岗岩、二长花岗岩，少量为石英闪长岩及闪长岩等；岩石化学成份以高硅、富碱、多钾、贫镁、少钙为特征，属高钾钙碱性系列或钾玄岩系列。

In the K-Na-Ca diagram, intermediate part has the tendency of toellite, and acid part has the tendency of calc-alkaline. According to the above data, its tectonic setting is thought to be continental arc.

其序列组成为石英闪长岩－花岗闪长岩／斜长花岗岩／英云闪长岩－二长花岗岩组合，二长花岗岩略多，地球化学特征具典型造山花岗岩特征，K-Na-Ca图解中性段具英云闪长岩趋势，酸性段呈钙碱性趋势，其构造坏境为大陆弧。

The ALK of the fine dioritequartz diorites is 5.47%~5.88%, ratio of K2O/Na2O is 0.455~0.496. Therefore, it belongs to calcalkalic rock series and shows the characters of Ⅱtype Adakite; The ALK of dioritic porphyritedacite porphyries is 7.83％~8.28％, ratio of K2O/Na2O is 1.100~1.747, belonging to shoshonitic rock series.

细晶闪长岩-石英闪长岩的ALK值为5.47％~5.88％，K2O/Na2O值为0.455~0.496，属钙碱性岩系，并具有Ⅱ型Adakite岩的性质；闪长玢岩-英安斑岩的ALK值为7.83％~8.28％，K2O/Na2O值为1.100~1.747，属粗安岩系。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。