Stable-isotopic anomalies and the accretionary assemblage of the Earth and Mars: A subordinate role for carbonaceous chondrites
PH Warren - Earth and Planetary Science Letters, 2011 - Elsevier
Plots such as ε54Cr vs. ε50Ti and ε54Cr vs. Δ17O reveal a fundamental dichotomy among
planetary materials. The “carbonaceous” chondrites, by virtue of high ε50Ti and high ε62Ni …
planetary materials. The “carbonaceous” chondrites, by virtue of high ε50Ti and high ε62Ni …
Ocean-like water in the Jupiter-family comet 103P/Hartley 2
For decades, the source of Earth's volatiles, especially water with a deuterium-to-hydrogen
ratio (D/H) of (1.558±0.001)× 10− 4, has been a subject of debate. The similarity of Earth's …
ratio (D/H) of (1.558±0.001)× 10− 4, has been a subject of debate. The similarity of Earth's …
Heterogeneous accretion, composition and core–mantle differentiation of the Earth
DC Rubie, DJ Frost, U Mann, Y Asahara… - Earth and Planetary …, 2011 - Elsevier
A model of core formation is presented that involves the Earth accreting heterogeneously
through a series of impacts with smaller differentiated bodies. Each collision results in the …
through a series of impacts with smaller differentiated bodies. Each collision results in the …
Molybdenum isotope anomalies in meteorites: Constraints on solar nebula evolution and origin of the Earth
The early evolution of the solar nebula involved substantial transport of mass, resulting in
mixing and homogenization of isotopically diverse materials that were contributed to the …
mixing and homogenization of isotopically diverse materials that were contributed to the …
Silicon isotopes in meteorites and planetary core formation
The silicon (Si) isotope compositions of 42 meteorite and terrestrial samples have been
determined using MC-ICPMS with the aim of resolving the current debate over their …
determined using MC-ICPMS with the aim of resolving the current debate over their …
Prediction of metal–silicate partition coefficients for siderophile elements: An update and assessment of PT conditions for metal–silicate equilibrium during accretion of …
K Righter - Earth and Planetary Science Letters, 2011 - Elsevier
Experimental studies of the partitioning of siderophile elements between metallic and
silicate liquids have provided fundamental constraints on the early history and differentiation …
silicate liquids have provided fundamental constraints on the early history and differentiation …
Terrestrial planet formation
K Righter, DP O'brien - Proceedings of the National …, 2011 - National Acad Sciences
Advances in our understanding of terrestrial planet formation have come from a
multidisciplinary approach. Studies of the ages and compositions of primitive meteorites with …
multidisciplinary approach. Studies of the ages and compositions of primitive meteorites with …
Convergence of Ni and Co metal–silicate partition coefficients in the deep magma-ocean and coupled silicon–oxygen solubility in iron melts at high pressures
MA Bouhifd, AP Jephcoat - Earth and Planetary Science Letters, 2011 - Elsevier
Abstract Models for a deep magma ocean have gained wide acceptance although with
variations in the specific conditions at which core formation may have taken place …
variations in the specific conditions at which core formation may have taken place …
146Sm–142Nd systematics measured in enstatite chondrites reveals a heterogeneous distribution of 142Nd in the solar nebula
The short-lived 146Sm–142Nd chronometer (T 1/2= 103 Ma) is used to constrain the early
silicate evolution of planetary bodies. The composition of bulk terrestrial planets is then …
silicate evolution of planetary bodies. The composition of bulk terrestrial planets is then …
Nature of volatile depletion and genetic relationships in enstatite chondrites and aubrites inferred from Zn isotopes
Enstatite meteorites include the undifferentiated enstatite chondrites and the differentiated
enstatite achondrites (aubrites). They are the most reduced group of all meteorites. The …
enstatite achondrites (aubrites). They are the most reduced group of all meteorites. The …