主体岩石

The feature of earth chemistry of volcanic rock in Xiangshan Group reflects that it belongs to the series of oceanic tholeiite in oceanic spreading tectonic environment.

结果 香山群的时代划归为中晚寒武世较合适；香山群主体是一套由板岩、细、粉砂岩和砂岩组成的浊积岩系，其砂岩类型主要是长石石英砂岩、细粒石英砂岩和粉砂质石英砂岩，前寒武纪变沉积岩和花岗片麻岩为主要碎屑来源和物源区组成；砂岩的岩石地球化学特征指示香山群属发育在被动大陆边缘斜坡环境中的沉积物，火山岩岩石地球化学特征反映其应属大洋扩张构造环境下的大洋拉斑玄武岩系列。

This paper reports the results of highly precise zircon SHRIMP U-Pb dating of quartz albitite in the volcanic-sedimentary series of the Tuolugou cobalt deposit, Golmud, Qinghai. Analyses of eight spots presented 206Pb/238U ages of 455 to 483Ma with a weighted mean age of 468±9Ma, which represents the timing of submarine volcanic exhalation in this area. Therefore, the age of the host rocks of the Tuolugou ore district is redefined as Ordovician, which implies that regionally the main part of the Naij Tal Group should be Early Paleozoic in age.

青海格尔木驼路沟矿区赋矿火山－沉积岩系中的石英钠长石岩样品锆石SHRIMP U-Pb精细测年结果表明，该岩石具有一组8个测点构成的455~483Ma的206Pb/238U年龄数据，加权平均年龄为468Ma±9Ma，应代表本区海底火山喷流作用的时间，因此重新厘定了矿区内含矿岩系的时代为奥陶纪，同时，这一年龄指示区域上纳赤台群主体的时代应为早古生代。

The study of their precise UPb geochronology and characteristics of rock associations shows that (1) small amount of EarlyTriassic (~248 Ma) volcanic rocks were preserved and cropped out in the area, which consist mainly of thin bed of andesitic rocks intercalated with minor basaltic andesites; that (2) the MiddleTriassic magmatism was characterized by extensive felsic igneous rocks with minor basalts interbedded in the middle of volcanic sections in part of areas, and the late MiddleTriassic rhyolites and main body of Lincang granitic batholith have the same extrusive/intrusive time with the age of ~230 Ma; that (3) the LateTriassic volcanic sequences are principally composed of basalts with minor interlayered rhyolites, exhibiting typical characteristics of bimodal volcanics.

三叠纪岩浆作用广泛发育于澜沧江南带，锆石UPb年代学结果及岩石组合特征显示：(1)该区残留有少量的早三叠世火山岩(约248 Ma)，主要为一套薄层的以安山岩为主的火山岩；(2)中三叠世以大规模的酸性岩浆作用为主，部分地段的中部夹有少量的玄武岩，其中晚期的流纹岩与该区出露巨大的临沧花岗岩基主体具有一致的形成时代(约230 Ma)；(3)晚三叠世则以基性火山岩为主，夹少量流纹岩为特征的&双峰式&火山岩组合。

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。

The morphology, character and distribution of Navajo haematite concretions allow us to infer host-rock properties and fluid processes necessary for similar features to develop on Mars.

地球上纳瓦霍沙岩与火星上Meridiani Planum之间的类比表明，火星上积累的球状赤铁矿是在有一种可渗透的主体岩石、地下水流和一个化学反应锋面的条件下形成的。

Based on isotopic ages and the cycle of magamtism, the ages of Yanbian granites can be subdivided into five periods:①late Permian granites (260-245Ma), the typical plutons are Liukesong and Liangbing plutons, and the main rock type include diorite-monzonitic-K syenogranites;②Triassic granites (225-200Ma), the typical plutons are Sandaogou, Chunyang, Qishiergedingzi, Dahuanggou, Naozhi, and Qinglinzi plutons, the main rock type include quartz dioritesgranodiorites-monzonitic-alkali granites;③early Jurassic granites (190-180Ma), which composed of quartz diorites-granodiorites - monzonitic ,and the typical plutons are Shimen, Miantian, Daxinggou and Yushuchuan rock;④Middle-Late Jurassic (170-150Ma), which composed of granodiorites- monzonitic- garnet-bearing muscovite granites, the typical plutons are Huangniling, Weizigou, Loutuoshan and Dongqing rock;⑤early Cretaceous (about 130Ma), the typical pluton is Zhongping pluton, and its rock type is paulite diorite.

另外，根据同位素年龄和岩石组合并考虑到岩浆的旋回性，将延边显生宙花岗岩进一步划分为五个期次：1。晚二叠世(260-245Ma)，代表性岩体为六棵松和亮兵，主体岩性为辉石闪长岩、二长花岗岩和钾长花岗岩；2。三叠世(225-200Ma)，代表性岩体为三道沟、春阳、七十二个顶子、大荒沟、闹枝、青林子，岩石组合为石英闪长岩—花岗闪长岩—二长花岗岩—碱长花岗岩，以花岗闪长岩和二长花岗岩为主；3。早侏罗世(190-180Ma)，石英闪长岩—花岗闪长岩—二长花岗岩组合，主体岩性为花岗闪长岩，代表性岩体有石门、棉田、大兴沟、榆树川等；4。中侏罗世(170-150Ma)，主体岩性为花岗闪长岩和含石榴石花岗岩，代表性岩体有黄泥岭、苇子沟、骆驼山、东清5。

The rock assemblage and geochemisty of the sedimentary rocks indicate that the Xiong'er Group formed in a passive continental margin and it was mainly a marine facies when lava erupted. Therefore the paleogeographic environment of the Xiong'er Group evolved from continental facies to marine facies then to continental facies again.

沉积岩的岩石学和地球化学特征表明熊耳群形成于被动大陆边缘的构造环境，结合火山岩的结构、构造特征，表明火山喷发的主体环境是海相，经历了陆相到海相再到陆相的演变过程，即：伴随着裂谷的发育、地面沉降和海水的侵入，以及随着火山喷发的进行最后又高出海面暴露于地表的全过程。

Xiangshan volcano-intrusive complexes is the wall rock of the biggest volcanic-rock uranium ore deposit in China, and the main body is rhyolitic porphyroclastic lava, accompanied by hypahyssal or ultra-hypabyssal intrusive rocks such as dacite-porphyry and granite-porphyry Jiulongzhang volcano-intrusive complexes are dominantly rhyolitic welded tuff, accompanied by dacite-porphyry and quartz monzonite-porphyry, and so on, and the uranium resources are being assessed.

相山火山－侵入杂岩是华南地区最大的火山岩型铀矿赋矿围岩，其主体岩石为流纹质碎斑熔岩，浅成－超浅成侵入岩有英安斑岩、花岗斑岩等；九龙嶂火山－侵入杂岩的铀资源潜力尚待评价，主体岩石为流纹质熔结凝灰岩，浅成－超浅成侵入岩有英安斑岩、石英二长斑岩等。

The coastal city as a show-style "garden of sunshine", a total area of 6900 square meters, the main entrance of the park by a seven themes Square entrance plaza Xingtan two and four square combination of sailing, including Seaview Park , rock garden, view of Japan and Taiwan, Chuk Yuen, Sun Garden, the five main landscape.

作为展现我市滨海风情的&日照园&，总面积达6900平方米，园区由一个主入口，七个主题广场，两个杏坛入口广场及四个帆船广场组合而成，主要包括海景园、岩石园、观日台、竹园、太阳花园五大主体景观。

Magnetic sus- ceptibility of these formations was obviously lower than the Archean high-graded metamorphic crystalline basements, while the responding ductile shear zones created enhanced anisotropy magnetic susceptibility attributed to their penetrative mineral lineations, both of them contributed to the crustal scale NEE-NNE striking linear aeromagnetic anomalies.

不同规模的古元古代活动带彼此并不相连，以发育变质沉积-火山岩建造为主体，岩石磁化率明显低于太古宙高级变质结晶基底，与之相关的韧性剪切带则以其透入性矿物线理产生了增强的磁化率各向异性，两者共同构建了地壳尺度北东东-北北东向线性航磁异常带。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。