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Zircon megacrysts from kimberlite: oxygen isotope variability among mantle melts
Abstract The oxygen isotope ratios of Phanerozoic zircons from kimberlite pipes in the Kaapvaal Craton of southern Africa and the Siberian Platform vary from 4.7 to 5.9‰ VSMOW. High precision,Expand
UWG-2, a garnet standard for oxygen isotope ratios: Strategies for high precision and accuracy with laser heating
UWG-2 is a new garnet standard for oxygen isotope analysis prepared from a single large porphyroblast that was homogeneous (±0.21‰) at the millimeter-scale before grinding. The δ 18O value of UWG-2Expand
4.4 billion years of crustal maturation: oxygen isotope ratios of magmatic zircon
Analysis of δ18O in igneous zircons of known age traces the evolution of intracrustal recycling and crust-mantle interaction through time. This record is especially sensitive because oxygen isotopeExpand
Hadean age for a post-magma-ocean zircon confirmed by atom-probe tomography
The oldest minerals on Earth are thought to have formed in the Hadean eon, but the reliability of the dates has been questioned. Atom-probe tomography of an ancient zircon confirms that the mineralExpand
Geochemistry of xenolithic eclogites from West Africa, Part I: A link between low MgO eclogites and Archean crust formation
Oxygen isotope, mineral trace element, and measured and reconstructed whole rock compositions are reported for low MgO (6 -13 wt.% MgO in the whole rock) eclogite xenoliths from the Koidu kimberliteExpand
Fe, C, and O isotope compositions of banded iron formation carbonates demonstrate a major role for dissimilatory iron reduction in ~2.5 Ga marine environments
Combined Fe, C, and O isotope measurements of ~ 2.5 Ga banded iron formation (BIF) carbonates from the Kuruman Iron Formation and underlying BIF and platform Ca–Mg carbonates of the GamohaanExpand
Intratest oxygen isotope variability in the planktonic foraminifer N. pachyderma: Real vs. apparent vital effects by ion microprobe
Abstract Intratest oxygen isotope variations in the planktonic foraminifer Neogloboquadrina pachyderma sinistral (left coiling) from North Atlantic core top and multi-net samples were assessed by ionExpand
Geochemistry of xenolithic eclogites from West Africa, part 2: origins of the high MgO eclogites
Abstract Oxygen isotope, mineral trace element, and measured and reconstructed whole-rock compositions are reported for the high MgO eclogite xenolith suite (16 to 20 wt% MgO in the whole rock) fromExpand
Zircons from kimberlite: New insights from oxygen isotopes, trace elements, and Ti in zircon thermometry
Zircons found in mantle-sourced kimberlite provide probes into the isotopic chemistry of the asthenosphere and subcontinental lithospheric mantle. However, little is known about the conditions ofExpand
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 δ 18 O values (−0.5 to 22.9‰) were analyzed to independentlyExpand
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