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- According to data with fossils and sporopollens in underlying sediment stratigraphic and volcanic isotopic age determination,the volcanic is a lower Cretaceous equivalent of upper of Gouyang formation of Early Cretaceous. 根据其下伏沉积地层中化石和孢粉资料及火山岩同位素测年资料，白女羊盘组火山岩的时代为早白垩世，其层位相当于下白垩统固阳组的上部层位。
- By the known data of isotope age determination, Nanhuaian time-structure frame was principally set up with the top boundary about 700 Ma and bottom about 800 Ma. 综合已有同位素测年数据，初步建立起南华纪年代构造格架，确立南华纪底界年龄为800 Ma左右，顶界年龄为700 Ma左右。
- Nd-Sr Isotopic Age Determination of Gneiss and Its Geological Significance, Donghai Region, North Jiangsu 苏北东海地区片麻岩的Nd-Sr同位素定年及其地质意义
- isotopic age determination 同位素年代测定,用同位素的时代测定,放射性测定年代
- Isotope age determination study on activity of Xiannushan Fault etc in the Primary Three Gorges Reservoir area 三峡库首区仙女山等断裂活动性同位素测年研究
- The carbon isotopic age by 14C of Krish cultural layer of this settlement is about 6650+50 y. BP or 5600-1480 y. 这些地区Krish文化层的~(14)C同位素年代为6650+/-50年,或者公元前5600-1480年。
- Age determination data indicate episodic crystallization of uranium minerals. 年龄测定数据表明，铀矿物有着不同期的结晶。
- This zone consists of basalt, diabase and other basic intrusive rock, and the isotopic age is between 259 Ma and 292 Ma. 它们的同位素年代为（259±09）Ma-（292。0±0.;5）Ma。
- The times of every pluton intrusion have been preliminarily defined on the basis of the isotopic age data of the Mesozoic granitoids. 2、根据中生代花岗岩的同位素年龄资料，初步厘定了各岩体的侵入时代。
- This study deals with age determination and age distribution of muskrat populations. 利用新疆等地区的597号麝鼠头骨标本和其它材料,研究种群年龄组成。
- In conclusion, both of the diameters and numbers of statoconia may not be appropriate index in age determination of hagfish. 由以上结果总结, 盲鳗耳石的直径与数量并不适于作为盲鳗定龄的型值。
- The isotopic age of the volcanic rocks of the Mount Bowles Formation (MBF) outcropped on the eastern part of Livingston Island, South Shetland Islands, Antarctica have been remeasured by 40 Ar/ 39 Ar and laser microarea isochron age dating techniques. 采用40Ar/39Ar法和激光微区等时线方法，对南极南设得兰群岛利文斯顿岛东部产出的鲍勒斯山组火山岩重新进行了年龄测定。
- The rocks and isotopic age of collisional structures in Pamir Plateau recorded the movement of Indian plate towards Asian plate, which passed through 3 stages of subduction, collision and squeezing. 帕米尔地区碰撞构造的岩石与同位素年龄,记录了印度板块对亚洲板块的运动,经历了俯冲、碰撞和榨挤3个阶段。
- Personal identification,as one of the most important tasks of medical jurisprudence,includes stature estimation,sex estimation and age determination. 个人识别在法医实践中占有重要地位,主要包括判定种族、推断身高、判定性别和推算年龄。
- In 1992, colleagues and I were invited to Longgupo to provide a reliable age determination and to help understand the palaeoanthropology. 1992年，我的同事们和我应邀到龙骨坡提供精确的断代，并帮助解释其在古人类学上的性质。
- Isotopic ages of the two-s tage diabase sills are 706-723 Ma and 604-654 Ma， respectively，corresponding to the early and late Sinian period. 稀土元素配分模式为轻稀土富集型，但稀土元素分馏并不强烈。
- In this thesis the progression of the study of lumbar vertebrae in stature estimation, sex estimation and age determination were discussed. 本文着重从身高推算、别判定和年龄判定三个方面综述了近年来腰椎在法医人类学领域的研究进展。
- In order to enhance the accuracy of skeletal age determination, further investigation for appropriate methodology should be undertaken. 因此，为了提高骨龄鉴定结论的精确度，还需进行更多方法学的研究。
- It is located in the west fl ank of the Panxi rift, but the REE mineralization was developed in the postrift stage based on the isotopic ages and the geological environment. 四川牦牛坪矿床是世界上最大的稀土矿床之一,该矿床位于攀西裂谷西缘,同位素年龄表明稀土矿化发育于裂谷期后阶段。
- K Ar dilution and 40 Ar/ 39 Ar step heating methods have been chosen in dating the isotopic ages of the volcanic and intrusive rocks of Byers Peninsula, Livingston Island. 以K－Ar稀释法和40Ar/39Ar阶段加热法对利文斯顿岛百尔斯半岛的熔岩和次火山岩测定了同位素年龄。
