The prerequisite for u test of comparison of sample rate and population rate;
样本率与总体率比较u检验的应用条件
This paper discussed the application of u-test formula in details, introduced the calculating formulae of u-test under various conditions about the standard error of the population.
对两个大样本均数比较的 u检验计算公式进行了详细的探讨 ,介绍了总体标准差已知、未知、相等和不等各种情况下 u检验的计算公式 ,认为在大样本的情况下进行均数比较的检验 ,应根据具体情况选择计算公式。
The U-Pb dating on detrital zircons is employed in this research to a better understanding of the varied provenances and the regional tectonic evolution.
闽西南晚三叠世文宾山组碎屑锆石形态学及U-Pb测年分析表明:(1)晚三叠世文宾山组物源复杂,其主要源区是闽西北隆起带;(2)闽西南晚三叠世具有大于2500 Ma的太古宙的源区,华夏古陆可能存在太古宙陆核或东南沿海还存在另一古老基底;(3)980~1190 Ma的碎屑锆石说明晚三叠世闽西南具有G renville期物质来源,它们可能来自另外一个陆块,由于印支期古特提斯洋关闭与华夏地块拼接,并为晚三叠世盆地提供物源;(4)区内印支期岩浆岩带也是晚三叠世沉积的重要物源区。
Forming Ages of Early Precambrian Metamorphic Strata in Shandong Province--Proofs of Zircon SHRIMP U-Pb Dating
山东早前寒武纪变质地层形成年代——锆石SHRIMP U-Pb测年的证据
LA-ICP-MS zircon U-Pb dating from granite-porphyry rcoks in Xikuangbei,East Junggar,Xinjiang,China
新疆东准噶尔锡矿北花岗斑岩的锆石LA-ICP-MS U-Pb测年
A Review of In-situ U-Pb Dating Methods for the Accessory U-Bearing Minerals
含U副矿物的原位微区U-Pb定年方法
Molybdenite Re-Os and SHRIMP zircon U-Pb dating of Duobuza porphyry copper deposit in Tibet and its geological implications
西藏多不杂斑岩铜矿床辉钼矿Re-Os和锆石U-Pb SHRIMP测年及地质意义
In situ U-Pb zircon dating using laser ablation-multi ion counting-ICP-MS
LA-MC-ICP-MS锆石微区原位U-Pb定年技术
SHRIMP Zicon U-Pb Dating and Its Geological Implication for the Xiangshan Porphyric Dacite-Rhyolitic
相山流纹英安斑岩锆石SHRIMP U-Pb年龄及地质意义
Ziron U-Pb Age of Gneissic Granites in the Tengchong Block,Western Yunnan
滇西腾冲地块片麻状花岗岩的锆石U-Pb年龄
Zircon U-Pb Age of Siliceous Rock from the Central Jilin and Its Geological Significance
吉林中部硅质岩中锆石U-Pb年龄及其地质意义
Zircon U-Pb Ages, Petrogenesis and Crustal Evolution of the Granites in Northeastern Part of the Great Xing'an Range;
大兴安岭东北部花岗岩类锆石U-Pb年龄、岩石成因及地壳演化
The Chronological Study on U-Pb Dating of Modern River Detrital Zircon in North Piedmont of Qinling and Its Geological Indication;
秦岭北麓现代河流碎屑锆石U-Pb年代学研究及其地质意义
Zircon U-Pb Age and Geochemistry of the Daohugou Volcanic Rocks in Ningcheng Area, Inner Mongolia;
内蒙宁城道虎沟火山岩的U-Pb年代学及地球化学研究
Early Cretaceous Zircon SHRIMP U-Pb Age of the Trachyte and Its Significances of the Gan-Hang Belt
赣杭带早白垩世粗面岩锆石SHRIMP U-Pb年龄及其意义
Study on Intrusive Rocks Forming Period and Stages Division in Ludong Area
鲁东地区侵入岩形成时代和期次划分——锆石SHRIMP U-Pb年龄的证据
Geochemical Charactericstic and Zircon SHRIMP U-Pb Dating of Sehe Granite in Shanyang County,Shanxi Province and Its Geological Significance
山阳色河花岗岩地球化学特征和锆石SHRIMP U-Pb年代学
Zircon LA-ICP-MS U-Pb Age of the Jinping-Tongchang Porphyry Associated with Cu-Mo Mineralization and its Geological Implication
金平铜厂铜钼矿床赋矿岩体锆石LA-ICP-MS U-Pb年龄及意义
Zircon SHRIMP U-Pb dating and geological significance from granite bodies in Tangzhangzi and Niuxinshan, eastern Hebei Province, China
冀东唐杖子、牛心山花岗岩体锆石SHRIMP U-Pb定年及其地质意义
Zircon SHRIMP U-Pb dating of two linear granite plutons in southern Altay Mountains and its tectonic implications
阿尔泰山脉南部线性花岗岩锆石SHRIMP U-Pb定年及其地质意义
Zircon U-Pb Dating and Tectonic Significance of the Shipingchuan Granite in Southeastern Zhejiang Province,SE China
浙东南石平川花岗岩体LA-ICP-MS锆石U-Pb年代学及构造意义