Lead isotope evidence for a young formation age of the Earth–Moon system
نویسندگان
چکیده
Lead isotope evidence for a young formation age of the Earth–Moon system Connelly, James; Bizzarro, Martin Published in: Earth and Planetary Science Letters DOI: 10.1016/j.epsl.2016.07.010 Publication date: 2016 Document Version Publisher's PDF, also known as Version of record Citation for published version (APA): Connelly, J., & Bizzarro, M. (2016). Lead isotope evidence for a young formation age of the Earth–Moon system. Earth and Planetary Science Letters, 452, 36-43. DOI: 10.1016/j.epsl.2016.07.010
منابع مشابه
A young Moon-forming giant impact at 70-110 million years accompanied by late-stage mixing, core formation and degassing of the Earth.
New W isotope data for lunar metals demonstrate that the Moon formed late in isotopic equilibrium with the bulk silicate Earth (BSE). On this basis, lunar Sr isotope data are used to define the former composition of the Earth and hence the Rb-Sr age of the Moon, which is 4.48+/-0.02Ga, or 70-110Ma (million years) after the start of the Solar System. This age is significantly later than had been...
متن کاملOxygen isotopic evidence for vigorous mixing during the Moon-forming giant impact.
Earth and the Moon are shown here to have indistinguishable oxygen isotope ratios, with a difference in Δ'(17)O of -1 ± 5 parts per million (2 standard error). On the basis of these data and our new planet formation simulations that include a realistic model for primordial oxygen isotopic reservoirs, our results favor vigorous mixing during the giant impact and therefore a high-energy, high-ang...
متن کاملThe iodine-plutonium-xenon age of the Moon-Earth system revisited.
Iodine-plutonium-xenon isotope systematics have been used to re-evaluate time constraints on the early evolution of the Earth-atmosphere system and, by inference, on the Moon-forming event. Two extinct radionuclides ((129)I, T1/2=15.6 Ma and (244)Pu, T1/2=80 Ma) have produced radiogenic (129)Xe and fissiogenic (131-136)Xe, respectively, within the Earth, the related isotope fingerprints of whic...
متن کاملEarly formation of the Moon 4.51 billion years ago
Establishing the age of the Moon is critical to understanding solar system evolution and the formation of rocky planets, including Earth. However, despite its importance, the age of the Moon has never been accurately determined. We present uranium-lead dating of Apollo 14 zircon fragments that yield highly precise, concordant ages, demonstrating that they are robust against postcrystallization ...
متن کاملNeodymium isotope evidence for a chondritic composition of the Moon.
Samarium-neodymium isotope data for six lunar basalts show that the bulk Moon has a 142Nd/144Nd ratio that is indistinguishable from that of chondritic meteorites but is 20 parts per million less than most samples from Earth. The Sm/Nd formation interval of the lunar mantle from these data is 215(-21)(+23) million years after the onset of solar system condensation. Because both Earth and the Mo...
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 2017