Côté, Alexander SBrodholt, John PBadro, James
Composition of the Earth's Outer Core 来自 国家科技图书文献中心 喜欢 0 阅读量: 12 作者: KE Bullen 摘要: ATTENTION has lately been given to the following set of four postulates: ( a ) the Earth, Mars and Venus have a common primitive composition; ( b ) compressibility is essentially ...
These layers were determined by their chemical composition. The core is the innermost layer of Earth, extending from the exact center of the Earth. It has an average depth of 6470km. The border between the inner core and outer core is about 5100km below the Earth's crust. The core has...
The Composition of the Earth's CrustMineral and Rock CompositionHere's our planet earth, the third member of our solar system. We know very littleof the solar system but what we know about the earth are based on our experience. Thepart of the earth that all of us have experienced is th...
This paper provides the state-of-the-art discussion of major aspects of the composition and evolution of the Earth's core. A comparison of experimentally-derived density of Fe with seismological data shows that the outer liquid core has a homogeneous structure and a similar to 10% density defic...
The composition of the Earth's core is poorly constrained beyond its major constituents (i.e. an Fe Ni alloy). Density contrasts between the inner and outer core boundary are used to suggest the presence (∼ 10 ± 5%) of a light element or a combination of elements (e.g., O, S,...
the chemical evolution of the Earth's mantle, the effect of core formation, and indicate negligible exchange between the core and mantle throughout the geologic record (the last 3.5 Ga). The composition of the Earth's core is poorly constrained beyond its major constituents (i.e. an Fe Ni...
the composition of the earth
RECENTLY, Birchreported data on the density and composition of the mantle and core. He wrote: ``The resulting densities in the lower mantle are found to be in good agreement with shock-wave measurements on rocks having FeO contents in the range 10 +/- 2% by weight ... except for iron ...
below the earth's surface, and further, express the view that the really important increase in χ occurs at a depth of about 700 km.; and they accordingly suggest a change in the composition of the earth in the vicinity of this depth. This result is specially interesting in view of ...