The DOI matches its Crossref record.
Re-Os Ages of Group IIA, IIIA, IVA, and IVB Iron Meteorites
Abstract
Rhenium and osmium concentrations and osmium isotopic ratios of group IIA, IIIA, IVA, and IVB iron meteorites were determined by negative thermal ionization mass spectrometry with modified digestion and equilibration techniques. Precise isochrons are defined for all four groups. An absolute age of 4558 million years is assumed for group IIIA irons, leading to closure ages of 4537 ± 8, 4456 ± 25, and 4527 ± 29 million years for the group IIA, IVA, and IVB irons, respectively. The initial osmium-187/osmium-188 ratios of the IIA, IIIA, and IVA groups, as a function of crystallization age, suggest that the rhenium/osmium ratio of the parental materials to these asteroidal cores was similar to that of ordinary chondrites. Data for IVB irons, in contrast, indicate a different mode of formation and derivation from a distinctly nonchondritic osmium reservoir.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
A Cryogenian chronology: Two long-lasting synchronous Neoproterozoic glaciations
Rooney, A. D., Strauss, J. V., Brandon, A. D., & Macdonald, F. A. (2015) · Geology · doi:10.1130/g36511.1 · Cited by 461
Kendall, B., Creaser, R. A., & Selby, D. (2006) · Geology · doi:10.1130/g22775.1 · Cited by 309
Hannah, J. L., Bekker, A., Stein, H. J., Markey, R. J., & Holland, H. D. (2004) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2004.06.013 · Cited by 263
Kendall, B., Creaser, R. A., Gordon, G. W., & Anbar, A. D. (2009) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2009.02.013 · Cited by 259
The tempo of Ediacaran evolution
Yang, C., Rooney, A. D., Condon, D. J., Li, X.-H., Grazhdankin, D. V., Bowyer, F. T., Hu, C., Macdonald, F. A., & Zhu, M. (2021) · Science Advances · doi:10.1126/sciadv.abi9643 · Cited by 202
Metadata
- Authors
- Smoliar, M. I., Walker, R. J., & Morgan, J. W.
- Venue
- Science
- Published
- 1996-02-23
- Volume
- 271
- Issue
- 5252
- Pages
- 1099-1102
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2031839367
- Cited by
- 1,356
- References
- 0
- FWCI
- 13.78
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Re-Os Ages of Group IIA, IIIA, IVA, and IVB Iron Meteorites. https://app.cochat.ai/papers/10.1126/science.271.5252.1099
- The paper
- Smoliar, M. I., Walker, R. J., & Morgan, J. W. (1996). Re-Os Ages of Group IIA, IIIA, IVA, and IVB Iron Meteorites. Science. https://doi.org/10.1126/science.271.5252.1099
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
