On the iron isotope composition of Mars and volatile depletion in the terrestrial planets
نویسندگان
چکیده
a Research School of Earth Sciences, Australian National University, Canberra 2601, ACT, Australia b School of Earth, Atmosphere and Environment, Monash University, Melbourne 3800, VIC, Australia c Department of Physical Sciences, Open University, Milton Keynes, MK76AA, UK d Department of Earth Sciences, The Natural History Museum, London, SW7 5BD, UK e Laboratoire Géosciences Environnement Toulouse, CNRS UMR 5563 – UPS – IRD, 14-16, Avenue Edouard Belin, 31400, Toulouse, France
منابع مشابه
Constraining Composition of Mars Using Geophysical Constraints and Mineral
Introduction: Compositions of the mantle and core of the terrestrial planets are important for us to understand the formation and evolution of the planets. There are two hypotheses on the evolution of the planets. One hypothesis suggests that the different mean densities of the terrestrial planets indicate different Fe/Si ratio in the planets. Because the terrestrial planets have different dist...
متن کاملComparative Planetology
The chemical compositions, interior structures, surfaces, evolutions, and magnetic fields of the planets and the major moons are compared in this article. The planets are largely of solar composition but differ in their depletion in volatile elements. The degree of depletion increases with decreasing mass and with decreasing distance from the sun with Jupiter being closest in composition to the...
متن کاملThe Osmium Isotopic Composition of Tagish Lake and Other Chondrites, Implications for Late Terrestrial Planetary Accretion
Introduction: The prevailing models for terrestrial planet origin and differentiation call upon magma oceans generally concurrent with core formation very early during differentiation. Tungsten isotope measurements of Earth and Mars materials are consistent with core formation occurring in terrestrial planets within 30 m.y. or less after the onset of condensation of the solar system [1-4]. In s...
متن کاملThe Composition and Evolution of a Geophysically Reasonable Moon Produced by a Giant Impact
Introduction: The magma ocean model for the early Moon’s evolution has been one of the most important and influential hypotheses to come out of the Apollo program. Recognizing that the earliest stages of a terrestrial planet’s evolution involve widespread melting, and attempting to understand what such a planetary-scale melting episode implies for geophysical and geochemical evolution, has been...
متن کاملAtmospheric Escape and Evolution of Terrestrial Planets and Satellites
The origin and evolution of Venus’, Earth’s, Mars’ and Titan’s atmospheres are discussed from the time when the active young Sun arrived at the Zero-Age-Main-Sequence. We show that the high EUV flux of the young Sun, depending on the thermospheric composition, the amount of IR-coolers and the mass and size of the planet, could have been responsible that hydrostatic equilibrium was not always ma...
متن کامل