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Nature of the Earth's earliest crust from hafnium isotopes in single detrital zircons
Continental crust forms from, and thus chemically depletes, the Earth's mantle. Evidence that the Earth's mantle was already chemically depleted by melting before the formation of today's oldest…
New half-life measurement of 182Hf: improved chronometer for the early solar system.
The greatly improved precision of this half-life now permits very precise intercalibration of the 182Hf-182W isotopic system with other chronometers.
Emergence of a Habitable Planet
Abstract We address the first several hundred million years of Earth’s history. The Moon-forming impact left Earth enveloped in a hot silicate atmosphere that cooled and condensed over ∼1,000 yrs. As…
Ir, Ru, Pt, and Pd in basalts and komatiites: new constraints for the geochemical behavior of the platinum-group elements in the mantle
Oxygen Isotopes and the Moon-Forming Giant Impact
- U. Wiechert, A. Halliday, D.-C. Lee, G. Snyder, L. Taylor, D. Rumble
- Geology, PhysicsScience
- 12 October 2001
The three oxygen isotopes (Δ17O), 16O,17O, and 18O provide no evidence that isotopic heterogeneity on the Moon was created by lunar impacts, and are consistent with the Giant Impact model.
Thermal and Magmatic Evolution of the Moon
As with all science, our continually developing concepts of lunar evolution are firmly tied to both new types of observations and the integration of these observations to the known pool of data. This…
Trace-element fractionation in plumes and the origin of HIMU mantle beneath the Cameroon line
- A. Halliday, J. Davidson, P. Holden, Charles P. DeWolf, Der-Chuen Lee, J. Fitton
- 11 October 1990
The lavas of the Cameroon line display a lead isotope anomaly at the continent/ocean boundary which can be attributed to a fossil mantle plume, the diminishing lateral effects of which can be…
Low-blank isotope ratio measurement of small samples of lithium using multiple-collector ICPMS
Tungsten isotopic compositions of iron meteorites: Chronological constraints vs. cosmogenic effects
Melt Enrichment of Shallow Depleted Mantle: a Detailed Petrological, Trace Element and Isotopic Study of Mantle-Derived Xenoliths and Megacrysts from the Cameroon Line
Major element, trace element and Sr-Nd-Pb isotopic compositions ofultramafic xenoliths and megacrysts from the continental Cameroon line provide evidence for metasomatism of the uppermost…