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- DIRECT ISOTOPE DATING FOR METALLIC ORE DEPOSITS 金属矿床的同位素直接定年方法
- Evidence from isotopic dating suggests that the greenstone belts vary considerably in age. 来自同位素年龄鉴定的证据指出，绿岩带在年龄上彼此变化相当大。
- The isotopic dating and fossil geochronometry are the basic methods of ophiolite geochronometry. 同位素测年及化石年代学法是蛇绿岩年代学研究的基本方法。
- A best chronology of the Cretaceous to Paleocene tectonic regimes has been established with the age constrained by stratigraphy and isotopic dating data. 这两个拆离系统分别形成于早白垩世莱阳群和晚白垩世-古新世王氏群沉积阶段。
- Zhou T X, Chen J F, Li X M, Foland K A. 40Ar/39Ar isotopic dating of intrusions from Huoshan-Shucheng syenite zone, Anhui Provience[J].Geology of Anhui, 1992, 2: 4-11. [9]周泰禧; 陈江峰; 李学明; Foland K A.;安徽霍舒正长岩带侵入体的40Ar/39Ar法同位素地质年龄[J]
- Based on the isotopic dating data of volcanics and recent research achievements of age boundary between Jurassic and Cretaceous systems, it is suggested that the volcanic series in Shengyuan basin must be attributed to Lower Cretaceous. 本文根据盛源盆地火山岩同位素年龄数据和侏罗-白垩系界线年龄的最新研究成果，认为盛源盆地火山岩系的地层时代应属早白垩世。
- Substantial changes consist in the transfer of Wutaian into Archaean and the alteration of lower limit of Changchengian system from 1850 to 1700 Ma, both based on new interpretation of isotopic dating. 划分中的重要改变是根据新的年龄值数据将五台群归入太古代,将长城系底界改为1700Ma;
- Abstract: Based on the isotopic dating data of volcanics and recent research achievements of age boundary between Jurassic and Cretaceous systems, it is suggested that the volcanic series in Shengyuan basin must be attributed to Lower Cretaceous. 文摘:本文根据盛源盆地火山岩同位素年龄数据和侏罗-白垩系界线年龄的最新研究成果，认为盛源盆地火山岩系的地层时代应属早白垩世。
- Isotopic dating of strike-slip mylonites, ultramylonite as well as associated igneous rocks in uplift belt indicated that the strike-slip displacement of the fault zone took place in early Cretaceous. 断裂带内走滑糜棱岩、超糜棱岩及伴生岩浆岩的同位素测年 ,表明其走滑时间为早白垩世。
- They've been dating for a long time. 他们一直频频约会。
- They haven't set a date for their wedding yet. 他们的婚期还没定下来。
- A radioactive isotope of carbon, especially carbon 14. 放射性碳碳的一种放射性同位素，尤指碳14。
- This Greek dish is of a very early date. 这个希腊盘子是很早时期的制品。
- Sm-Nd Isotope Dating and Geological Implications for the Mesoproterozoic Mamianshan Group in Fujian Province 福建马面山群Sm-Nd同位素年龄及其地质意义
- I tried to fix the date in my mind. 我试着把那个日期牢记在心。
- Can you produce any proof of your date of birth? 你能出示有关你的生日日期的任何证件吗？
- All our information is up to date on the computer. 我们计算机上的信息都是最新的。
- The Separation of Authigenic Illite from Detrital Illite in Sedimentary Rock for Ar Isotope Dating 用于同位素测年的自生伊利石分离纯化流程探索
- It is no good asking her for a date. 要求和她定个约会也没有用。
- He can reel off the date of the king of england. 他能流畅地说出所有英国国王的生卒年份。
