新太古代
- 网络neoarchean;neoarchaean;late archean
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孟家屯岩组为鲁西新太古代早期形成的一套表壳岩,代表性的岩石类型为石榴石英岩、黑云母石英片岩、斜长角闪岩等。
The Mengjiatun Formation complex is a suite of supracrustal rocks formed in the early Neoarchean , and its typical rocks include garnet quartzite , biotite-quartz schist and amphibolite .
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麻粒岩相超高温变质作用(G-UHTM)主要发育于新太古代至寒武纪岩石中;
Granulite facies ultrahigh temperature metamorphism ( G-UHTM ) is documented in the rock record predominantly from Neoarchean to Cambrian ;
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在胶北隆起南缘新太古代TTG质片麻岩中发育了大量的超铁镁质-铁镁质岩包体,呈NEE向群带状展布。
Lots of mafic-ultramafic enclaves are developed in Neoarchaean TTG gneisses in south of Jiaobei uplift with the trend of NEE .
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东部陆块和阴山陆块新太古代基底岩石变质作用具有等压冷却型逆时针p-T演化轨迹特征,反映变质作用热源与大量地幔岩浆底板垫托或侵位有关。
Metamorphism of Late Archean basement rocks in the Eastern and Yinshan Blocks is characterized by anticlockwise p-T paths , mostly involving isobaric cooling , suggesting that the heating source of the metamorphism was related to the underplating or intrusion of large volumes of mantle-derived magmas .
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分析了华北克拉通新太古代&三叠纪16个碎屑沉积岩组合样品。
Clastic sedimentary rock composites from the North China craton were analyzed .
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北大河岩群的蚀源区存在中-新太古代的古老陆壳。
The data also imply that there are Meso-to Neoarchaean continental crusts in the source areas .
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笔者首次在山东新泰地区新太古代层状硫化物中观测到了明显的硫同位素非质量分馏效应。
An obvious mass-independent sulfur isotope fractionation was first observed in Archean stratiform sulfides from Xintai area , Shandong Province .
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其围岩为遭受角门岩相&麻粒岩相区域变质和混合岩化的新太古代大别杂岩。
Their country rocks are the Neo - Archaean Dabie complex which has experienced regional metamorphism of amphibolite - granulite facies and migmatization .
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新太古代变质侵入岩中分布着小型金矿或金矿点10余处,金矿床的分布与这类侵入岩具有空间和时间上的密切联系。
More than 10 gold ores / spots distribute in the intrusives , and they have the closely space-time relationship with the intrusives .
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河南中部登封地区早前寒武纪基底主要由新太古代登封群、古元古代嵩山群和早前寒武纪花岗质岩石组成。
Early Precambrian basement in the Dengfeng area , central Henan Province , is mainly composed of the Neoarchaean Dengfeng Group , Palaeoproterozoic Songshan Group and Neoarchaean granitoids .
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中国金矿床最重要的成矿时代为中生代(侏罗&白垩纪),缺乏国外广泛出现的新太古代绿岩型金矿化和新生代金矿化。
The most important metallogenetic epoch is Mesozoic ( Jurassic & Cretaceous ) gold mineralization , whereas the Archean greenstone and Cenozoic epithermal types gold deposits are minor in China .
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郯&庐断裂两侧的地质差异由新太古代延续到早白垩世晚期,指示胶东半岛为一独立大地构造块体。
The geological contrasts on the two sides of the Tan-Lu Fault can be recognized from Neo-Archaean to Early Cretaceous , suggesting that the Shandong Peninsula is a separate tectonic block .
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哈达门沟金矿床位于华北地台北缘西段,产于新太古代乌拉山岩群变质岩系中。
Hademengou gold deposit in the western portion of the northen margin of the North China Craton , is hosted by the metamorphic rocks of the Wulashan Group with New Archaean age .
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鲁西新太古代花岗-绿岩带位于华北克拉通东部,主要由泰山岩群和花岗质岩石组成。
The Archean granite-greenstone belt of Western Shandong Province ( WSP ) is located in the eastern North China Craton and is mainly composed of the Taishan Group and surrounding granitoid association .
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江苏地层清理项目组以现代地层学理论为指导,经3年多工作,搜集了江苏近100年来大量新太古代至第三纪地层资料。
Taking modern stratigraphic theories as guidance , Jiangsu Stratigraphic Clearance Team collected a large amount of stratigraphic information from Archaeozoic Era to Tertiary Period over the last hundred years through the effort of more than three years .
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新太古代蓝藻或蓝菌的出现虽促进了大气圈的氧化,但海洋氧化的滞后明显制约了真核生物的发展,导致在2.78~0.6Ga长达20多亿年的时间里,生物演化缓慢。
The existence of Cyanobacteria in the Archean did boost the atmospheric oxygenation and make eukaryotes be present , but the retention of oxygenation in ocean obviously restrains the development of eukaryotes , leading slow organism evolution in the long period of 2.0 Ga between 2.78 Ga and 0.6 Ga.
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尽管理论上这样大规模的地幔岩浆可形成在大陆岩浆弧、地幔柱或大陆裂谷环境,只有地幔柱模式才能合理地解释东部陆块和阴山陆块新太古代基底岩石时空分布、岩石组合和构造特征。
Although theoretically such mantle-derived magmas form under continental magmatic arc , mantle plume or continental rift environments , only a mantle plume model can reasonably explain spatial and temporal distribution , lithological association , and structural features of the Late Archean basement rocks in the Eastern and Yinshan Blocks .
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指出中国金成矿的三个大地构造特征:中国第一个岩金成矿高潮的地层时代(古元古代)晚于全球第一个岩金成矿高潮的地层时代(新太古代);
Three tectonic characteristics in connection with gold metallogenesis in China are given in the present paper : the stratigraphic era ( the Proterozoic ) of the first metallogenetic culmination for lode gold in China is later than that ( the Late Archaeozoic ) of the world as a whole ;