isotopic age中文什么意思
同位素年龄
- isotopic: adj. 同位素的。 isotopi ...
- age: n. 1.年龄。 2.成年〔满廿一岁 ...
- isotopic age determination: 放射性测定年代; 同位素年代测定; ...
例句与用法
- Isotopic age of shijuli gabbro in north qilian mountain and its geological significance
北祁连山石居里辉长岩的同位素年龄及其地质意义 - Rb - sr whole rock - minerals ages determination indicates that the isochronal ages are 25018 ma and 213 . 09 . 8 ma for suhaitu and wenduerhao intrusion , respectively . the dated isotopic ages demonstrate that the alxa alkaline - rich intrusive rocks belong to indosinian alkaline magma activity . the similarities and differences of the alkaline - rich intrusive rocks distributed in the alxa fault block and those distributed along the northern margin of the north china block and the tarim block are compared and discussed
采用rb - sr法对阿拉善断块有代表性的苏亥图温都尔浩富碱侵入岩体的年进行了测定，分别获得25018 ma和213 . 09 . 8 ma的年值，提供了属于印支期的年代学证据，认为阿拉善断块北缘富碱侵入岩和华北断块北缘燕辽阴山印支期富碱性侵入岩带应该划归同一印支期富碱性侵入岩带。 - 2 . 38 . 6ma and 36 . 7ma isotopic ages of quartz - monzonite - porphyry in lianhuashan and alkaline porphyry in zhuopan have respectively been obtained . those results are consistent with the ages of the porphyries in both lanping - shimao basin and changdu basin related igneous rocks , representing the first episode ( lanping movement ) of tectonics - magmatism - metallogenic event during the himalayan movement
获得了莲花山石英二长斑岩及卓潘碱性斑岩的ar - ar年龄，分别为38 . 6ma与36 . 7ma ，与整个兰坪?思茅盆地与昌都盆地及两侧的斑岩与相关火山岩一致，代表喜马拉雅运动第一幕(兰坪运动)的重要构造?岩浆?成矿事件。 - By statistically analyzing of isotopic ages for granitoids and commenting on previous studies , the authors preliminarily determine that a large volume of granitoids developed during 200100ma , predominately formed in the period of 150100ma , with the peak age at about 130ma . the inferred lithosphere delamination from the development of granitoids occurred slightly later than that deduced from researches on metamorphic rocks
通过对花岗岩类同位素年统计和前人研究成果的评述，初步确定在200100ma之间发育大量花岗岩类，并集中在150100ma为主即侏罗纪白垩纪之交，高峰时间为130ma左右花岗岩类大量发育指示了岩石圈拆沉的存在，且滞后于根据变质岩研究所揭示的拆沉时间。
