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of 23
pro vyhledávání: '"Bao, Xuezhao"'
Autor:
Bao, Xuezhao
Publikováno v:
Geological Review 45(sup.): 82-92,1999
Here we propose that there is a lot of heat producing elements U and Th in the outer core of the Earth. The heat released from them may be the major energy source for driving the material movement within the interior of Earth, including plate motion.
Externí odkaz:
http://arxiv.org/abs/0903.1566
Publikováno v:
Sci.Geol.Sin.33:455-462,1998
The magmatic and metamorphic zircons were investigated with Raman spectrum microprobe analysis. We found notable differences between these two kinds of zircons exhibited by the variation trend of Raman peak intensity from core to rim of a crystal. In
Externí odkaz:
http://arxiv.org/abs/0707.3184
Autor:
Bao, Xuezhao
Publikováno v:
ActaPetrolog.Mineral.15:404-410,1995
Zircons can crystallize in a wide range of physical and chemical conditions. At the same time, they have high stability and durability. Therefore zircons can grow and survive in a variety of geological processes. In addition, the diffusivity of chemi
Externí odkaz:
http://arxiv.org/abs/0707.3180
Autor:
Bao, Xuezhao, Xiaochun, Gan
Publikováno v:
ActaPetrolog.Mineral.15:73-79,1996
Zircons can crystallize in a wide range of physical and chemical conditions. At the same time, they have high stability and durability. Therefore zircons can grow and survive in a variety of geological processes. In addition, the diffusivity of chemi
Externí odkaz:
http://arxiv.org/abs/0707.3181
Autor:
Bao, Xuezhao, Zhang, Ali
Publikováno v:
ActaPetrolog.Mineral.17:160-172,1998
We have investigated the migration behaviors of uranium (U) and thorium (Th) in Earth and other terrestrial planets. Theoretical models of U and Th migration have been proposed. These models suggest that the unique features of Earth are closely conne
Externí odkaz:
http://arxiv.org/abs/0706.1089
Autor:
Bao, Xuezhao, Secco, Richard A.
Uranium is the most important heat producing element in the Earth. The presence of an appreciable amount of U in the core of Earth would have an important influence on geodynamics. In this study, the solubility of U in Fe-10wt% S and in Fe-35wt% S wa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606634
We have investigated the partitioning of U between silicate melt and Fe liquid at pressures of 3.0 to14.5 GPa and temperatures of 1660 to 2500 oC. The solubility of U in liquid Fe is in the range of 0.6 to 800 ppm and increases with temperature (T) a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606614
Autor:
Bao, Xuezhao
The migration of U and Th inside a planet is controlled by its oxidation state imposed by the volatile composition. In the deep interior of a planet, an absence of oxidative volatiles will cause U and Th to stay in a state of metal or low valance com
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606468
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