Hf–W chronometry of core formation in planetesimals inferred from weakly irradiated iron meteorites
The application of Hf–W chronometry to determine the timescales of core formation in the
parent bodies of magmatic iron meteorites is severely hampered by 182W burnout during …
parent bodies of magmatic iron meteorites is severely hampered by 182W burnout during …
Correlated helium-3 and tungsten isotopes in iron meteorites: quantitative cosmogenic corrections and planetesimal formation times
Core formation in planetesimals can, in principle, be dated using the short-lived 182Hf–
182W chronometer. However, it has been predicted that burnout and production of W …
182W chronometer. However, it has been predicted that burnout and production of W …
Neutron capture on Pt isotopes in iron meteorites and the Hf–W chronology of core formation in planetesimals
The short-lived 182Hf–182W isotope system can provide powerful constraints on the
timescales of planetary core formation, but its application to iron meteorites is hampered by …
timescales of planetary core formation, but its application to iron meteorites is hampered by …
Hf–W evidence for rapid differentiation of iron meteorite parent bodies
New, high-precision W isotope data on iron meteorites are presented that provide important
constraints on the timing of silicate–metal segregation in planetesimals. Magmatic iron …
constraints on the timing of silicate–metal segregation in planetesimals. Magmatic iron …
Rapid accretion and differentiation of iron meteorite parent bodies inferred from 182Hf–182W chronometry and thermal modeling
New high-precision W isotope measurements are presented for 33 iron meteorites from 8
magmatic groups (IC, IIAB, IID, IIIAB, IIIE, IIIF, I VA and IVB), 2 non-magmatic groups (IAB …
magmatic groups (IC, IIAB, IID, IIIAB, IIIE, IIIF, I VA and IVB), 2 non-magmatic groups (IAB …
Correlated cosmogenic W and Os isotopic variations in Carbo and implications for Hf–W chronology
An obstacle for establishing the chronology of iron meteorite formation using 182 Hf–182 W
systematics (t 1/2= 8.9 Myr) is to find proper neutron fluence monitors to correct for cosmic …
systematics (t 1/2= 8.9 Myr) is to find proper neutron fluence monitors to correct for cosmic …
Coupled W–Os–Pt isotope systematics in IVB iron meteorites: In situ neutron dosimetry for W isotope chronology
Tungsten isotope compositions of magmatic iron meteorites yield ages of differentiation that
are within±2Ma of the formation of CAIs, with the exception of IVB irons that plot to …
are within±2Ma of the formation of CAIs, with the exception of IVB irons that plot to …
Iron isotope constraints on planetesimal core formation in the early solar system
We determined the Fe isotope fractionation between the metal and silicate phases of two
aubrite meteorites, Norton County and Mount Egerton. We find that the metallic phase is …
aubrite meteorites, Norton County and Mount Egerton. We find that the metallic phase is …
Nucleosynthetic Pt isotope anomalies and the Hf-W chronology of core formation in inner and outer solar system planetesimals
The 182 Hf-182 W chronology of iron meteorites provides crucial information on the
timescales of accretion and differentiation of some of the oldest planetesimals of the Solar …
timescales of accretion and differentiation of some of the oldest planetesimals of the Solar …
182W and 187Re-187Os systematics of iron meteorites: Chronology for melting, differentiation, and crystallization in asteroids
W isotopic compositions (measured by N-TIMS) in five iron meteorite groups are used in
conjunction with 187Re-187Os isotopic data to constrain the timing of metal segregation and …
conjunction with 187Re-187Os isotopic data to constrain the timing of metal segregation and …