While olivine-rich deposits are widespread on Mars, the locations of the strongest concentrations are between the inner and outer rings of the Argyre and Isidis impact basins. High-resolution imaging of the central peak and scarp exposures show the rocks are commonly breccias with extremely large ...
Marc D.NORMAN.The composition and thickness of the crust of Mars estimated from rare earth elements and neodymium‐isotopic compositions of Martian meteorites[J]. Meteoritics & Planetary Science .2010(3)Norman M. D. (1999)The composition and thickness of the crust of Mars estimated from rare ...
et al. Evidence for a low bulk crustal density for Mars from gravity and topography. Geophys. Res. Lett. 44, 7686–7694 (2017). Article ADS PubMed PubMed Central Google Scholar Condie, K. C. Chemical composition and evolution of the upper continental crust: contrasting results from ...
Elemental composition of the Martian crust. The composition of Mars' crust records the planet's integrated geologic history and provides clues to its differentiation. Spacecraft and meteorite data no... Harry,Y,McSween,... - 《Science》 被引量: 353发表: 2009年 Elemental Composition of the ...
and potassium. ♦ The crust that lies underneath the oceans is calledoceanic crust, and is approximately 3 to 6 miles (4.8 to 9.7 kilometers) thick. It has a similar composition to that of continental crust, but has higher concentrations of iron, magnesium, and calcium. It is denser than...
These new findings, however, confirm that composition isn’t responsible. While the rock composition is the same in both hemispheres, the thickness of the crust differs, and this accounts for the Martian dichotomy. RELATED STORIES: — Marsquakes reveal Red Planet has surprisingly large core...
Feldspar had been found previously in other regions on Mars, but further analysis showed the chemical composition in those areas was more basaltic. That did not deter the scientists, who turned to another instrument, called Thermal Emission Imaging System, or simply,THEMIS. This instrument aboard ...
Fig. 1: Whole-rock major element composition of SE Iceland intrusions. a Normative anorthite-albite-orthoclase classification diagram shows that the samples are predominantly granodiorite and granite with a few in the tonalite field. Yellow data points are published data from Reydaratindur34. Pink fi...
The model for the lunar magma ocean evolution has formed the basis of our understanding of how many bodies in the solar system evolve, from large asteroids to the Earth and Mars. Depending on the size of the bodies, and other factors such as bulk composition and volatile content, magma ocea...