玄武岩

That is to say, the Cenozoic alkaline basalts were more or less modified by some enriched Sr-Nd isotopic components during their eruption.

同时，拉斑玄武岩不是碱性玄武质岩浆直接结晶分异的产物，亦不是完全由部分熔融程度的不同造成的。

The rocks aremainly composed of alkaline olivine basalts and basanites, and lots of lava layers had ultra-maficxenoliths and megacrysts.

岩石类型主要为碱性橄榄玄武岩和碧玄岩，多数岩层中出现超镁铁质包体和巨晶。

One of the primary techniques that has been utilized in determining directing of ice movement by Pleistocence glaciers is through the presence of exotic rock particles which can be tied to a known sourse.large clasts of basaltic rock with native copper have been found in glacial drift in southern Illinois.the oniy source for this copper is the Keewenaw Peninsula of Michigan.

对已确定由更新世冰川的冰层移动指挥使用的主要技术1.one是已在冰川发现，通过外来的岩石，可连接到一个与原生铜玄武岩称为sourse.large碎屑粒子的存在南部Illinois.the这个铜oniy源漂移，是Michigan。

Chinese Academy of Sciences , Beijing 100029 , ChinaAbstract : The content s of such platinum-group element s as Ir , Ru , Rh , Pt and Pd in J ianguo basalt s and Wula 2 hada Mg- high andesites were determined using ICP-MS after a nickel sulfide fire assay preconcent ration.

采用镍锍火试金法结合 ICP-MS 分析了碱锅玄武岩和乌拉哈达高镁安山岩样品中的 Ir 、 Ru 、 Rh 、 Pt 和 Pd 的含量。

According to their mineral assemblages, the granulite xenoliths entrained by Cenozoic Hannuoba basalts are divided into four groups: felsic granulites, noritic granulites, two-pyroxene two-feldspar granulites and two-pyroxene granulites, with the two-pyroxene granulites most common.

根据矿物组合特征，汉诺坝玄武岩中的麻粒岩捕掳体可划分为四种类型：长英质麻粒岩、苏长质麻粒岩、二辉二长麻粒岩和二辉麻粒岩，其中以二辉麻粒岩最为常见。

The deep-seated xenoliths entrained by the Cenozoic Hannuoba basalts can be divided into three groups according to their mineral assemblages:Ⅰ Granulites, including felsic granulites, noritic granulites, and dominantly, two-pyroxene granulites,Ⅱ Pyroxenites, including websterites, spinel pyroxenites, and garnet pyroxenites;Ⅲ Peridotites, including spinel lherzolites and spinelgarnet lherzolites.

根据新生代汉诺坝玄武岩中深源岩石捕掳体的矿物组合类型，将其分为主要的三大类：麻粒岩类中包括长英质麻粒岩、苏长质麻粒岩和二辉麻粒岩，辉石岩类包括二辉石岩、尖晶石辉石岩和石榴子石辉石岩，橄榄岩类则包括尖晶石二辉橄榄岩和尖晶石-石榴子石二辉橄榄岩。

Porous basalt stones superior performance, style, except with the general characteristics of the ordinary stone, but also with sound-absorbing insulation, thermal storage heat-absorbing, waterproof non-slip, acid,"breathing" and other special features, was known as the Stone of experts "functional" stone.

多孔玄武岩石材性能优越，风格独特，除具有普通石材的一般特点外，还具有吸音隔音、吸热储热、防水防滑、耐酸碱、&呼吸&等特殊功能，被石材专家称为&功能性&石材。

Plate tectonics; ocean ridge; magmatism; ocean crust; lithosphere; Benioff Zone; Precambrian; seafloor magnetic lineations; mantle; basalt; transform fault; metamorphism; metamorphic facies; Strontium isotope; sulphide ore

关键词：板块构造；洋脊；岩浆作用；洋底壳；岩石圈；贝尼奥夫带；前寒武纪；海底磁性线壮构造；地幔；玄武岩；转换断层；变质作用；变质相；锶同位素；硫化矿

Up to date the reserves discovered at shallow targ ets has exceeded 70% of total in Bohai Sea.Neotectonismis chara cterized by:(1)different Q and N center of subsidence,and angular unconformity b etween Q and N;(2)basalt effusion and magma activities frequently;(3)regular dis tribution of earthquake center;(4)intensive later faults (15-2Ma)forming multit ude anticiline in Nm-Ng formations.

目前浅层的油气储量占总储量的70%以上，这是由于海域新构造运动控制了晚期成藏，表现为：第四纪沉降中心与Nm晚期沉降中心不吻合，使得Q与N之间地层呈角度不整合；玄武岩喷发及岩浆活动频繁；沿渤南及郯庐断裂带天然地震震中有规律分布，晚期(15～2Ma)断裂极其发育，在Nm—Ng组地层内形成众多的背斜圈闭。

Low concentration of compatible elements in all the rocks indicates the magmas experienced different extent of differentiation crystallization.

各期次玄武岩的相容元素丰度较低，表明岩浆发生过不同程度的分离结晶作用。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。