搜索结果: 1-8 共查到“矿床学与矿相学 U and Th”相关记录8条 . 查询时间(0.031 秒)
中国地质大学科学技术发展院邓晓东,李建威等资源学院GPMR国家重点实验室 Earth and Planetary Science Letters, 2017. Late Mio-Pliocene chemical weathering of the Yulong porphyry Cu deposit in the eastern Tibetan Plateau constrained by goethite (U–Th)/He dating: Implication for Asian summer monsoon
青藏高原；东缘玉龙；超大型；斑岩
2021/10/21
近日，中国地质大学资源学院和地质过程与矿产资源国家重点实验室李建威团队有关青藏高原东缘玉龙超大型斑岩铜矿床风化壳(U-Th)/He年代学的研究成果发表在地学领域重要综合期刊《Earth and Planetary Science Letters》上。该文第一作者为地质过程与矿产资源国家重点实验室邓晓东研究员，通讯作者为资源学院李建威教授。
龙山金锑矿床是湘中锑-金矿集区最重要的矿床之一，因缺少适合传统放射性同位素定年的矿物，其成矿时代以往未得到很好的限定，制约了对矿床成因的认识。由于分析测试技术的进步，Re-Os同位素定年技术得到了发展，可对热液矿床中形成的低Re、Os含量的硫化物进行较准确可靠的年龄测定，从而可为低温热液矿床的形成时代提供有效制约。锆石U-Th/He同位素定年，也是近年发展和成熟起来的定年技术，对低温热事件极其敏感...
Th(IV)在高庙子膨润土上的吸附行为
高庙子膨润土 吸附 Th(IV)
2011/10/18
采用静态批式法研究了Th(IV)在高庙子膨润土上的吸附行为。探讨了接触时间、ph、离子强度、固液比以及腐殖酸对吸附的影响'测定了293.15K下的吸附等温线。实验结果表明，ph和离子强度对Th(IV)吸附的影响很大，腐殖酸在低ph下促进Th(IV)在高庙子膨润土上的吸附，而在高ph下几乎没有影响；Th(IV)在高庙子膨润土上的吸附主要通过表面络合和离子交换进行；Langmuir方程可以很好的拟合吸...
用静态批式的方法研究了[N值’离子强度’温度和腐殖酸浓度等因素对H7"0#在凹凸棒石上的吸附’解吸的影响(结果表明%[N值对H7"0#在凹凸棒石上的吸附有显著影响%而离子强度对吸附的影响却相对较弱!H7"0#在凹凸棒石表面的吸附主要通过内层络合形式进行%而外层络合和离子交换只是微弱的作用!当[Nb"&+)时%富里酸"‘<#和胡敏酸"N<#对吸附亦有促进作用!升高温度有利于H7"0#在凹凸棒石上的吸...
FT-IR/PAS AND SEM EDX STUDIES ON ALUMINOSILICATES MODIFIED BY CS(I), TH(IV) AND U(VI)
industrial minerals radioactive waste disposal
2011/11/7
Clays and zeolites are some of the most important industrial minerals. They have practical applications in geology, agriculture, construction, engineering, process industries, and environment. This ar...
The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany, Part I: The monazite-(Ce)-brabantite solid solution series
chemical composition REE-Y-Th-U-rich accessory minerals peraluminous granites Erzgebirge-Fichtelgebirge region monazite-(Ce)-brabantite solid solution series
2012/3/31
eraluminous granites of the Erzgebirge-Fichtelgebirge, Germany, are hosts of various members of the monazite group of minerals that display an unprecedented compositional diversity. The Eibenstock S-t...
Experimental study of Th-bearing LaPO4 (780 °C, 200 MPa): Implications for monazite and actinide orthophosphate stability
Experimental study Th-bearing LaPO4 monazite actinide orthophosphate stability
2012/4/5
Acompletesolidsolutionhasbeenhydrothermallysynthesizedbetweenthetwoend-membersLaPOand(Ca Th )POat780Cand200MPa,indicatingthatthereisnolimitationintemperatureandpressureconditionscorrespondingtothoseof...
Isothermal Diffusion of Eu and Th in Deep-Sea Sediments: Experimental Results and a Numerical Model
Deep-sea sediments Diffusion Europium Partition coefficient Sorption Thorium
2012/1/12
Batch data for the sorption of Eu and Th on pelagic sediments may be represented by equations of the form: ln M = A ln Cs + B/T + D, where M = concentration of sorbate on sediment, Cs = concentration ...
