元古代的

OGa. The 1863士44Ma U-Pb age of migmatite and 2071士48 Sm-Nd iso- chron age of amphibolite in Sanzhishu demonstrate that at least part of the "Hexi" Group is of Early Proterozoic rather than Late Paleozoic.

三枝树地区"鹤溪群"中混合岩年龄为1863±44Ma，斜长角闪岩全岩矿物Sm－Nd等时线年龄为2071±48Ma，表明景宁三枝树地区变质岩的时代应为早元古代，并非原来所属"鹤溪群"划归的晚古生代，这套变质岩可能是浙闽变质基底的一部分。

The rhyolite of upper Luliang Group is a typical A-type volcanic rock and is a constituent member of an A-type volcanic - intruded complex in this area.

研究表明吕梁群流纹岩是一个典型的早元古代A型流纹岩，是本区A型火山一侵入杂岩的组成部分。

The comparison of this pole with paleomagnetic data from others paleo-continent supports the hypothesis of Columbia supercontinent.

通过与Laurentia、Baltica和Siberia可靠的古地磁数据对比，支持了古－中元古代可能存在Columbia超级大陆的假说。

The Huade Group underwent at least two phases of deformation:the early phase of deformation gave rise to ENE-trending synclinorium and the late phase was marked by tectonic superimposition,forming NNW-trending folds. The main phase of deformation likely occurred in ~2.0 Ga B.P.The deformation of the Huade Group is related to a Paleoproterozoic orogenic event along the northern margin of the North China Craton, which has great significance for the study of accretion and breakup of the North China Craton.

化德群经历了两期构造变形，早期为北东东走向的复式向斜，晚期又遭受了构造叠加，形成了北北西向褶皱构造，其主期变形可能发生在2.0 Ga左右，它的褶皱造山是华北克拉通在古元古代向北增生的体现，这对研究华北克拉通的增生，裂解具有重要意义。

The pot shaped peak is formed along the joints and fissures with the weathering and eroding of Adamellite formed 2.4billion years ago.

24亿年左右形成的古元古代二长花岗岩，沿节理裂隙风化剥蚀后形成的壶状山峰。

Nalati tectonic belts as the ultimate demise suture of south Tianshan ocean between Tarim plate - Yili-plate, of which basement is composed of lower Proterozoic gneissic metamorphic supracrustal rocks of Nalati rock group and early Proterozoic gneissic granite.

塔里木-伊犁微板块间的南天山洋最终消亡缝合线——那拉提构造带，基底由下元古界那拉提岩群的片麻岩、变质表壳岩及早元古代片麻状花岗岩组成。

It was also indicated by the temperature calculation that the lithspheric mantle is stratigraphically layered with the lower part composed by fertile lherzolite and the upper part by refractory harzburgite and clinopyroxene-poor lherzolite.

Sr-Nd-Hf同位素资料反映这些地幔包体均表现为亏损性质，而Re-Os同位素资料确定上述岩石圈地幔形成于中元古代，明显老于上覆地壳的新元古宙时代，反映壳幔年龄上的解耦。

Multi-metal mineralization, such as silver, cooper and molybdenum majorly developed in contacted zone of fractured fault belt in Weideshan superunit and Paleo-proterozoic Jingshan group.

银铜钼等多金属矿化主要发育于伟德山超单元的断裂破碎带或与古元古代荆山群的接触带中。

Based on zircon SHRIMP U-Pb, Sm-Nd and Ar-Ar isotopic datings and trace elements data of zircon and whole rock of the mafic granulite from Huilanshan in Lotian doming, we concluded that the protolith of the mafic granulite shoud be the Neoproterozoic mafic rocks, the granulite facies metamorphism of this rock was occurred at 124.0?.

罗田穹隆惠兰山基性麻粒岩的锆石U-Pb、Sm-Nd和Ar-Ar定年及锆石和全岩微量元素地球化学工作证明该麻粒岩的原岩形成于晚元古代，其麻粒岩相变质作用发生在124.0？。

It is suggested that North China and Yangtze Cratons had ever been a unified craton, called Palaeosinica Craton, within which NNE-trending structural framwork was dominant, untill to the end of Palaeoproterozoic.

提出了 古元古代华北克拉通与扬子克拉通可能为一个统一的克拉通，暂称之为古中国克拉通，并且这一克拉通内的主导性构造线方位是NNE向。

I'm gonna go pack my regular, long bathing suit.

我要去打包我那不起眼的超长泳裤

Random number generators are used in many areas, with the improvement of the computational ability of the computer.

随着计算机计算能力的不断提高，随机数发生器在许多领域有了更加广泛的应用。