查询词典 Archean

The Au background values are generally high in the amphibolitic rocks of the Archean metamorphic series, which is the main source bed of the region. Amphibolite facies is the major Au-bearing lithofacies.

太古宙变质岩系中的&角闪质&岩石的金元素背景值普遍较高，为本区的主要矿源层，角闪岩相是含金的主要岩相。

Rhere are much Later Archean auriferous greenston formation and TanshanianAu一Cu Series granitoid at the area of scientific investigation.

在区域上金矿床由于受纬向隆起带、深断裂、NE向构造岩浆活动带和NW向构造挤压带的联合控制，其分布呈菱形格局。

Based on the settings and geological and geochemical characteristics of granitoids of different orogenic belts (exemplified by orogenic granitoids in Altay, East Kunlun, Yanshan in North China, Northeast China and Nanling in South China), the relationships between granitoids and continental crustal growth are discussed, and five modes of continental crustal growth in the continent of China are proposed;they are as follows:(1)the Altay mode of continental growth is that the material and heat of the Paleozoic convertive mantle formed on the background of the Paleo-Asian Ocean were input into the Paleozoic continent and mixed with the materials of the upper crust;(2) the East Kunlun mode is that the basement of the Proterozoic orogenic belt was reworked by the heat input and materials of the Paleozoic-early Mesozoic convective mantle formed on the background of TTG continental crust of the Proterozoic orogenic belt;(3) the Northeast China style is that the Phanerozoic continental crust was reworked by the heat input and materials from the convective mantle formed on the background of the Yanshanian Central Asian orogenic belt;(4) the Yanshan mode is that the Archean basement was reworked by the heat input and materials from the Yanshanian convective mantle;and (5) the Nanling mode is that in South China what was input by the Yanshanian convective mantle into the continent was mainly heat and subordinately materials and the crustal material recycle was the dominant mode for the continental growth (showing zero continental growth).

根据不同造山带花岗岩的形成背景，地质地球化学特征差异，以阿尔泰，东昆仑，华北燕山，东北和南岭造山带花岗岩为例讨论花岗岩与大陆地壳生长的关系，区分出中国大陆的5种大陆地壳生长方式：阿尔泰式是古亚洲洋背景上形成的古生代对流地幔物质，热输入和上地壳混合为主的方式；东昆仑式是元古代造山带TTG陆壳背景基础上古生代—早中生代对流地幔物质和热输入，改造元古宙造山带基底的方式；东北式是燕山期中亚造山带背景上对流地幔物质和热输入改造显生宙陆壳的生长方式；燕山式是燕山期对流地幔物质和热输入改造太古宙基底的方式；南岭式燕山期对流地幔输入大陆的是以热为主，物质为辅，大陆地壳生长是以陆壳物质再循环为主的生长方式。

Inherited zircon ; North China block ; Yangtze block ; Qinling-Dabie erogenic belt ; Archean magmatic event

继承性锆石；华北陆块；扬子陆块；秦岭-大别造山带；岩浆事件

The hypo-volcanic crytoexplosion Breccia rock body is formed of granite magma, which is rise to the lower of the earth s crust along the east-western shear zone and exploded below the Archean fundus rock. The felstone vein and the hypo-volcanic crytoexplosion Breccia rock are from the same magma source, and are formed in the different evolution stages.

香炉碗子金矿区分布的次火山隐爆角砾岩体是由花岗质岩浆沿东西向脆～韧性剪切带上升到地壳浅部隐爆太古代基底岩石所形成，霏细岩脉与次火山隐爆角砾岩来自同一岩浆源，为同一岩浆活动不同演化阶段所形成的。

The main tectonic features of the four stages mentioned above can be summarized as follows, gneissic basement and greenstone belt in the Archean, formation and rifting of ancient continental crust in the Transition, creation and disposal of the first supercontinent Columbia in the Paleoproterozoic-Mesoproterozoic, and the assembly and disassembly of the supercontinent Rodinea under plate tectonic framework in Neoproterozoic.

这四大阶段的主要构造面貌分别是：片麻岩基底和绿岩带盆地，古陆壳的形成与裂解，第一个超级大陆即哥伦比亚超大陆的形成与离散，板块构造体制下罗迪尼亚超大陆的汇聚与离散，反映了大陆岩石圈的形成和由低级向高级的演化，因而每一阶段都有不同于前一阶段的沉积建造、火成岩类型及组合、变质作用、构造样式、构造线方向、变形方式和成矿作用。

The original Seluohe Group contains at least four parts: Late Archean metamorphic rocks (zircon SHRIMP protolith ages 2517~2534 Ma), Late Paleozoic metamorphosed volcanic-sedimentary strata (zircon SHRIMP 252 Ma), Permian gneissic granitic complex (zircon SHRIMP 260 Ma), and Jurassic mylonitized granites (zircon SHRIMP 168 Ma).

原划分的色洛河群至少由4部分组成：新太古代变质火山－沉积地层（锆石SHRIMP年龄为2517~2534 Ma）、晚古生代变质火山－沉积地层（英安岩锆石SHRIMP年龄为252 Ma）、二叠纪片麻状杂岩体（锆石SHRIMP年龄为260 Ma）和侏罗纪糜棱岩化花岗岩（锆石SHRIMP年龄为168 Ma）。

According to a recent theory, archean-age gold quartz vein systems were formed over two billion years ago from magmatic fluidds that originated from molten granitelike bodies deeo beneath the surface of the earth.

根据一个近来的理论，太古时代的金-石英矿买系统是在二十亿年以前从来自地球表面以下很深的融化了的花岗岩似的部分的岩浆流当中被形成的。

The Sm-Nd isochron age (1182±50Ma) of Kangshan metamorphic complex has first been presented in the paper, which deny the tranditional point that the complex is Archean Taihua group. It's suggested that the plagioclase-amphibolite originates from subcon tinantal lithospheric mantal, assimilating and hybridizing minor crustal materials.

首次提供康山变质杂岩的Sm-Nd等时线年龄(1182±50Ma)，否定了康山变质杂岩是太华群的传统认识，并提出康山变质杂岩内斜长角闪岩原岩主要来源于大陆岩石圈地幔，同化混染了少量壳内物质。

Three major metallogenetic epoch s in the evolution are late Archean (2 700￣2 600 Ma) greenstone, late Palezoic (450￣340 Ma) epigenetic and Mesozoic mesothermal—Cenozoic epithermal types gold mineralization epoch, respectively.

本区银矿成矿时代为195～100Ma；成矿物质以深部来源为主，兼有基底和盖层物质加入；成矿热液主要是岩浆水中混入大量天水的混合水

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。