1. geological dating在线翻译

1. Dating is an important subject in geological research. The geologic dating methods face some different difficulties.
    地层年代确定是地质学研究领域的重要课题，地质类定年方法具有各种不利因素。

2. Synthesized researches on biotic evolution, alternation and accurate chronological dating, taphonomy of vertebrate or invertebrate fossils and elemental or isotopic geochemistry of bones of fossils and sediments, i. e., HBCNOS and COSr, could help us to well understand the biotic and environmental response to the geological events on the Earth surface system and reconstructed the palaeogeography, palaeoecologic environment and palaeoecosystem of the Late Mesozoic, North China.
    陆地生物群分布、演化、更替与精确定年，脊椎无脊椎生物埋葬特征，生物演化速率、消长关系和生物群更替的形式和性质，以及脊椎动物骨骼、牙齿的常量、微量元素、H-B-C-N-O-S 和C-O-Sr等地球化学特征的研究可以恢复和重建古地理、古生态环境和古生态系统。

3. geological dating是什么意思

3. Analyses on geochemistry and tectonic setting of ophiolites Geological profiling, microscope observation, geochemical testing and isotopic dating have finished systematically for studying ophiolites of west Namco Lake, Yongzhuzangbu-Guomanco, Dongqiao-Ando and Zedang-Luobusha.
    典型蛇绿岩地球化学特征及形成环境分析：对纳木错西岸蛇绿岩、永珠藏布—果忙错蛇绿岩、安多—东巧蛇绿岩和泽当—罗布莎蛇绿岩进行了系统的剖面观测、岩石薄片鉴定、岩石化学分析及稀土元素地球化学、微量元素地球化学对比分析。

4. Ca is widely abundant in nature and its rodioisotope 41 Ca is a cosmogenic nuclide with a half|life of 105 years. However, the 41 Ca/ 40 Ca ratio in natural samples is very low and can only be measure d by accelerator mass spectrometry. The application of 41 Ca is ve ry i mportant not only in the life science but also in geological dating, global envi ronment change studies and astrophysics.
    1 引言Ca在自然界中广泛存在，它不仅是人体中含量最丰富的元素之一[1] ，也是众多其他物质的组成部分。41Ca(半衰期为 1.0 3× 10 5a)属于Ca的放射性同位素中的一种，其衰变方式为轨道电子俘获，只发射3.3keV的X射线，天然样品中41Ca 40 Ca的值很小。

5.

5. Early Yanshannian granite bodies, cognate dykes, auriferrous quartz vein are closely related spatially. Isotopic dating data and the geochemical similarity demonstratethat the three types of geological bodies mentioned above are of closely genetic relationship.
    燕山早期花岗岩体、同源脉岩、含金石英脉空间上密切共生，大量同位素资料又显示它们形成时间上的一致性，三者地球化学特征具有惊人的相似性，反映三者之间密切的成因联系。

6. geological dating的翻译

6. Radioactive krypton isotopes 85Kr and 81Kr, with half life time 10.8a and 0.23Ma, respectively, have excellent geological physical and chemical properties very suitable for dating airbearing water or ice samples.
    放射性氪同位素85Kr（半衰期10.8a）、81Kr（半衰期0.23Ma）具有十分理想的地球物理化学特性，十分适于对溶解了大气的水或冰样品进行绝对年代测定。

7. AMS 14C dating on six horizons revealed that core DOC-42 preserved a geological record of 44000 cal.
    kaBP以来的古海洋环境演化记录。

8. Mulanshan Wuhan City is the only one national geological parks high-pressure and ultra-high pressure metamorphic belt blue schist and huge amounts of Piemontite-geological study of Chinese relics is the key to the central orogenic belt the geological origin dating back to Jul亿mchvayear ago.
    木兰山是武汉市唯一的一家国家地质公园，其高压，超高压蓝片岩变质带及大量的红帘石地质遗迹是研究中国中央造山带的金钥匙，地质成因年代可追溯至距今七亿五千万年。

9. The planet is currently too cold for water to exist in a liquid state, but scientists generally agree that during the planet''s earliest geological period, known as the Noachian epoch and dating 4.6 billion to 3.5 billion years ago, there were enough atmospheric greenhouse gases to warm the air and support lakes and flowing rivers.
    目前，火星表面温度太低以至于水无法以液态形式存在，但是科学家们普遍认为在火星地质最早期——46-35亿年前的诺亚世，火星大气层中充满着足够的温室气体能够加热大气层气体，可实现湖泊和河水流动。

10. 911查询·英语单词

10. In this project, we arm to study the uplift process of the LPS through geomorphic stratigraphy methods. Firstly, we investigated the geomorphic - stratigraphy features in the field, based on comprehension of geological, topographic maps and previous studies, then outline the distribution of different leveled landforms such as planation, pediment, river terraces in the LPS area. There are two levels planation surfaces and one piedmont and several terraces. Secondly, The formation age of these leveled landforms is contrained by paleomagnetism, fission track dating. The main planation surface disintegrated at Mid-late Miocene time, since then, another planation surface developed till 3.4Ma, and the piedmont formed at 1.8Ma. Thirdly, in order to reveal important tectonic-climate events, proxies of paleoenvironment such as magnetic susceptibility, has been analyzed in several typical Cenozoic sections.
    本项目通过野外地貌地层调查、地形图判读和综合参考已有的大量文献资料，初步查明六盘山地区存在两级夷平面和一级剥蚀面以及多级阶地；通过沉积地层学、磁性地层、地层对比等多种研究方法限定了这些地貌面的形成时代；对典型新生代地层剖面进行环境指标进而捕捉重大构造—气侯事件，确定了中更新世气候转型事件在中国黄土中的时限，指出了六盘山东西两侧地貌分异的大致时代，通过区域构造-气候事件的对比探讨了六盘山隆起与青藏高原隆升的关系。

11. SHRIMP dating and geological significance of Late Achaean high-Mg diorite (sanukite) and hornblende-granite at Guyang of Inner Mongolia
      内蒙古固阳晚太古代赞岐岩（sanukite）&角闪花岗岩的SHRIMP定年及其意义

12. Geological dating by the fluorine contents in the fossils of ancient vertebrate animal bones and teeth
      用古脊椎动物化石中氟含量测定地质年代

13. The field profile observation, indoor geological profile analysis, seismic profile analysis and the fission-track dating were used to study the formation age of dustpan fault depression.
      利用野外剖面观察、室内地质剖面分析、地震剖面分析以及裂变径迹年代学等方法对鲁西隆起和济阳坳陷箕状断陷的形成时代进行了探讨。

14. Analysis and determination on the age of geological samples by Li method in radiocarbon dating
      在~（14）C断代中用锂法对地质样品的分析

15. Based on the geological evidence and dating of sediments the rate of E-W extension of the rift basin since 130 ka BP is 51.9 mm/a in the north and 94.2 mm/a in the south.
      根据地质依据和沉积物定年研究，130ka以来裂陷盆地东西向扩张数率为北部51.9mm/a、南部94.2mm/a。

16. For the timing of hydrocarbon charging in shallow reservoirs, methods such as traditional geological analysis, fluid inclusions in reservoirs and illite dating have obvious shortages.
      传统地质分析、储层流体包裹体和伊利石测年等方法对于浅层油气藏油气充注时间的确定，都存在着明显的不足。

17. Chemical methods for Sm-Nd separation and its application in isotopic geological dating
      钐钕分离的化学方法及其在同位素地质年龄中的应用

18. Zircon Dating and Geochemistry of Clastic Sedimentary Rocks in the Gonghe-Huashixia Area, Qinghai Province and Their Geological Implications
      青海共和&花石峡碎屑沉积岩地球化学与锆石年代学及其地质意义

19. Zircon U-Pb dating and geochemistry of clastic sedimentary rocks in the Gonghe-Huashixia Area, Qinghai Province and their geological implications The sediments are detrital and largely of greywacke facies.
      青海共和&花石峡三叠纪碎屑沉积岩的地球化学特征与锆石U-Pb年龄及地质意义沉积岩为碎屑质，大部分属于杂质砂岩相。

20. Re-Os Isotopic Dating of Molybdenite from the Shankou Molybdenum Deposit in Yongding County of Fujian Province and Its Geological Significance
      福建省永定山口钼矿辉钼矿铼-锇同位素定年及其地质特征