Oxygen Isotopic Composition of Mare- Basalts: Magma Ocean Differentiation
نویسندگان
چکیده
BASALTS: MAGMA OCEAN DIFFERENTIATION AND SOURCE HETEROGENEITY. L.J. Hallis, R.C. Greenwood, M. Anand, S.S. Russell, M. F. Miller and I. A. Franchi. [email protected]. Department of Mineralogy, The Natural History Museum, Cromwell Rd, London, SW7 5BD, UK. Dept. of Earth and Environmental Sciences, The Open University, Milton Keynes MK7 6AA, UK. PSSRI, The Open University, Milton Keynes MK7 6AA, UK. British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK
منابع مشابه
Oxygen isotope constraints on the origin and differentiation of the Moon
We report new high-precision laser fluorination three-isotope oxygen data for lunar materials. Terrestrial silicates with a range of δO values (−0.5 to 22.9‰) were analyzed to independently determine the slope of the terrestrial fractionation line (TFL; λ=0.5259±0.0008; 95% confidence level). This new TFL determination allows direct comparison of lunar oxygen isotope systematics with those of E...
متن کاملMagnesium isotopic composition of the Earth and chondrites
To constrain further the Mg isotopic composition of the Earth and chondrites, and investigate the behavior of Mg isotopes during planetary formation and magmatic processes, we report high-precision (±0.06& on dMg and ±0.07& on dMg, 2SD) analyses of Mg isotopes for (1) 47 mid-ocean ridge basalts covering global major ridge segments and spanning a broad range in latitudes, geochemical and radioge...
متن کاملOxygen and iron isotope constraints on near-surface fractionation effects and the composition of lunar mare basalt source regions
Oxygen and iron isotope analyses of low-Ti and high-Timare basalts are presented to constrain their petrogenesis and to assess stable isotope variations within lunar mantle sources. An internally-consistent dataset of oxygen isotope compositions of mare basalts encompasses five types of low-Ti basalts from the Apollo 12 and 15 missions and eight types of high-Ti basalts from the Apollo 11 and 1...
متن کاملAn Apollo 15 mare basalt fragment and lunar mare provinces
Lunar sample 15474,4 is a tiny fragment of olivine-augite vitrophyre that is a mare basalt. Although petrographically distinct from all other Apollo 15 samples, it has been ignored since its first brief description. Our new petrographic and mineral chemical data show that the olivines and pyroxenes are distinct from those in other basalts. The basalt cooled and solidified extremely rapidly; som...
متن کاملThe chlorine isotope fingerprint of the lunar magma ocean.
The Moon contains chlorine that is isotopically unlike that of any other body yet studied in the Solar System, an observation that has been interpreted to support traditional models of the formation of a nominally hydrogen-free ("dry") Moon. We have analyzed abundances and isotopic compositions of Cl and H in lunar mare basalts, and find little evidence that anhydrous lava outgassing was import...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009