古环境
- Paleoenvironment;palaeoenvironment
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在古环境和古气候的分析上,缺乏定量化标准;
The lack of standards for quantitative reconstruction of palaeoenvironment and palaeoclimate ;
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福州盆地晚第四纪地层划分及古环境分析
Division of Late Quaternary strata and analysis of palaeoenvironment in Fuzhou Basin
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云南鹤庆盆地HQ孔沉积特征与古环境变迁
Sedimentary characteristics and climatic evolution of core HQ in Heqing basin Yunnan Province
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研究证明,生物有机过程可以使Fe同位素产生大的分馏效应,因此根据Fe同位素组成的变化可以推测古环境中生命活动的存在。
Studies indicate that biological processes can significantly fractionate Fe isotopes , which in turn may be useful to trace the existence of biogenic activities in ancient environments .
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3000年来该地区古环境变化经历下列过程:2.45KaBP前有河流沉积环境的特点:色素指标为零,C/N比值高达60~80等;
Before 2.45 ka BP , fossil pigment was not found in sediments , and C / N was obviously high and even reached 60 - 80 , characteristic of fluvial facies .
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与其它陆地古环境信息载体相比,洞穴滴石石笋具有分布广、时间跨度大、生长机制对环境敏感、适用于U系测年等特点。
Compared with other paleo-environment information media on land , cave dripstone-stalagmite has many superiorities including wide-ranging distribution , long-time span , sensitive to outside environment , suitable for U-series dating etc.
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这一结论与C3、C4植物本身对生长环境的要求是相符的,因此土壤碳酸盐δ13C值及C3、C4植物的生物量变化规律可以被用来作为指示古环境、古气候变化的指示因子。
So , biomass of C3 , C4 plants and δ 13C values of soil section can be used to indicated the changing process of local paleoenvironment .
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北极阿拉斯加巴罗地区Elson泻湖的沉积古环境研究
Research on the sedimentary environmental changes in Elson lagoon at Barrow area , Alaskan Arctica
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介绍用热电离质谱(thermalionizationmassspectrometry,TIMS)铀系法对海洋珊瑚定年的测定及古环境研究的一些成果。
Experimental results of coral dating and paleoenvironment studies by using the thermal ionization spectrometry ( TIMS ) uranium series method were introduced .
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四川龙门山区早泥盆世Emsian期群落古环境分析
Palaeoenvironments of eight benthic communities in emsian stage of Lower Devonian from Mt. longmen , Sichuan Province
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南海北部陆坡大洋钻探计划(ODP)1144站的高速堆积体为高分辨率的古环境研究提供了良好的材料。
High accumulation-rate sediments at Ocean Drilling Program ( ODP ) Site 1144 in the northern slope of the South China Sea provide unique materials for a high-resolution study on paleoenvironment .
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岩溶石笋的古环境研究进展
Progress in research on the paleo - environment of karst stalagmite
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新疆若羌石灰华中的植物化石及古环境
Fossil plants from calcareous tufa and palaeoenvironments in ruoqiang , Xinjiang
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南方高纬度新生代古环境专家组
Group of Specialists on Cenozoic Palaeoenvironment of the Southern High Latitudes
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晚第三纪以来中国古环境的特征及其发展历史
The characteristics and evolution of paleoenvironment of China since late Tertiary
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柴达木盆地中新世叠层石成因与古环境研究
Study on Miocene stromatolites genesis and related paleo-environment in Qaidam basin
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黄土化学组成的古环境信息研究
Study on Environmental Information from Chemical Composition of Loess in Past Environment
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韩江三角洲第四系中粘土矿物与古环境探讨
Approach of Cley Mineral and Paleo-environment in the Quaternary of Hanjiang Delta
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兰州地区晚第三纪地层的沉积相与古环境记录
The Sedimentary Facies and Paleoenvironment Records of Late Tertiary in Lanzhou Area
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成都金沙遗址脊椎动物及古环境研究
The Studies on the Vertebrates and Paleoenvironment in Jinsha Site , Chengdu
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应用生物标志物参数定量判识热水沉积古环境
Application of biomarker parameters to quantitative discrimination of the hydrothermal sedimentary Paleoenvironment
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从动物群化石看渤海晚第四纪的古环境演变史
The late Quaternary paleo environmental history of Bohai on assemblage of faunas
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铀曲线在沉积盆地古环境反演中的应用
Application of uranium curve to paleoenvironment inversion in sedimentary basin
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有孔虫壳体的Mg/Ca比值在古环境研究中的应用
The application of foraminiferal shell mg / ca ratio in paleo-environmental studies
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沉积物中黏土矿物具有一定的古环境指示意义。
Clay minerals in sediments had some ancient environmental significance .
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高分辨率古环境指示器&湖泊纹泥研究综述
Review on the high resolution varved lake sediments as a proxy of Paleoenvironment
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深圳地区晚第四纪孢粉组合及古环境演变
Palynological Assemblages of Late Quaternary from the Shenzhen region and Its Paleoenvironment evolution
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珊瑚的古环境信息研究进展
Advance in study on paleo environmental information in coral
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上海东部地区晚第四纪沉积的孢粉组合及古环境
Palynological Assemblages of Late Quaternary in Eastern Part of Shanghai and Its Paleoenvironment
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湖泊沉积物中的孢粉组合是重建古环境的重要手段。
Pollen in lake sediments is an important proxy for reconstructing the paleo-environment .