期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
Mantle Ichor HACONS—Its Geological Significance (Ⅱ)
1
作者 杜乐天 《Chinese Journal Of Geochemistry》 EI CAS 1989年第3期202-212,共11页
The chemistry and migration patterns of the mantle ichor are discussed on a globle scale followed by evaluations of the significance of HACONSfluid with respect to various geological processes of fundamental interest.
关键词 地幔流体 地质标质 卤素 碱金属
下载PDF
Mantle Ichor HACONS——Evidence of Its Existence(Ⅰ)
2
作者 杜乐天 《Chinese Journal Of Geochemistry》 EI CAS 1989年第3期193-201,共9页
A HACONS,mantle fluid, has been proposed in the light of current knowledge concerning Diwa,rift ,asthenosphere,anomalous and depleted mantle,plume, percolating magma fluid, degassing,inorganic origin of some oil and g... A HACONS,mantle fluid, has been proposed in the light of current knowledge concerning Diwa,rift ,asthenosphere,anomalous and depleted mantle,plume, percolating magma fluid, degassing,inorganic origin of some oil and gas,hypogeic salt deposits,alkali-metasomatism in hydrothermal depos-its and experimental studies of basalts.The HACONS fluid originated from the mantle and is composed of hydrogen and halogens(H), alkalis(A), carbon(C), oxygen(O),nitrogen(N) and sulfur(S) com-pound systems .Aluminosilicate magmas are expected when the HACONS fluid reacts with solid rocks.Many geological processes,including tectonism, magmatism,volcanism,metamorphism,hydrothermal activity,thermal sedimentation and related mineralizations are thought to be controlled to a certain extent by large -scale mouement of HACONS fluid in the earth's interior.The asthenosphere is essentially a layer with abundant HACONS fluid. 展开更多
关键词 岩流圈 油气 地幔流体 地洼说 断裂学说
下载PDF
Hydrogeochemical modeling of groundwater chemical environmental evolution in Hebei Plain 被引量:1
3
作者 郭永海 沈照理 钟佐燊 《Science China Earth Sciences》 SCIE EI CAS 1997年第5期502-508,共7页
Using the hydrogeochemical modeling method, the groundwater chemical environmental problems of the Hebei Plain which involve increasing of hardness and total dissolved solids in piedmont area and mixing of saline wate... Using the hydrogeochemical modeling method, the groundwater chemical environmental problems of the Hebei Plain which involve increasing of hardness and total dissolved solids in piedmont area and mixing of saline water with fresh water in middle-eastern area are studied. The water-rock interactions and mass transfer along a ground-water flow path and in mixing processes are calculated. Thus the evolution mechanisms of the groundwater chemical environment are brought to light. 展开更多
关键词 groundwaler CHEMICAL ENVIRONMENT hydrogeochemical MODELING water-rock INTERACTION
原文传递
ACCURATE DETERMINATION OF NEUTRON FLUENCE IN FISSION TRACK DATING
4
作者 赵云龙 《Chinese Science Bulletin》 SCIE EI CAS 1990年第12期983-987,共5页
Age determination using the fission track technique depends upon the accurate neutron fluence and the fission cross section value of <sup>235</sup>U. The neutron fluence determined commonly by Au and Co mo... Age determination using the fission track technique depends upon the accurate neutron fluence and the fission cross section value of <sup>235</sup>U. The neutron fluence determined commonly by Au and Co monitors or the B value(ψ=BP<sub>d</sub>, ψ=thermal fluence; p<sub>d</sub>=induced fission track density in uranium standard dosimetric glass after neutron irradiation)of 展开更多
关键词 NEUTRON FLUENCE FISSION TRACK DATING B value.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部