The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.
An Isotopic Study of Paleosol Carbonates from Olduvai Gorge
Abstract
The isotopic composition of paleosol carbonates from Olduvai Gorge can be used to give estimates of the paleoclimatic history of East Africa during the Plio-Pleistocene. Oxygen isotopes are indicative of major changes in the isotopic composition of meteoric water, while carbon isotopes are indicative of major changes in the fraction of biomass using the Hatch-Slack (C 4) photosynthetic pathway. Three major periods of climatic change in this terrestrial setting occurred at about 1.67, 1.3, and 0.6 myr. These involved major changes in flora as well as major changes in the isotopic composition of meteoric water. Overall, the climate has become warmer and more arid over the past 2.2 myr.
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
Cites
Tranter, C. J. (1959) · Journal of the Mechanics and Physics of Solids · doi:10.1016/0022-5096(59)90029-8 · Cited by 18,388
Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
Steiger, R. H., & Jäger, E. (1977) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(77)90060-7 · Cited by 9,994
Compilation of stable isotope fractionation factors of geochemical interest
Friedman, I., & O'Neil, J. R. (1977) · Professional Paper · doi:10.3133/pp440kk · Cited by 2,691
Standard for Reporting Concentrations of Deuterium and Oxygen-18 in Natural Waters
Craig, H. (1961) · Science · doi:10.1126/science.133.3467.1833 · Cited by 2,013
The stable isotopic composition of modern soil carbonate and its relationship to climate
Cerling, T. E. (1984) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(84)90089-x · Cited by 1,406
Self-citationIsotopic evidence for source of diagenetic carbonates formed during burial of organic-rich sediments
Irwin, H., Curtis, C., & Coleman, M. (1977) · Nature · doi:10.1038/269209a0 · Cited by 1,350
THE ISOTOPIC COMPOSITION OF REDUCED ORGANIC CARBON
DEINES, P. (1980) · The Terrestrial Environment, A · doi:10.1016/b978-0-444-41780-0.50015-8 · Cited by 1,325
Climatic patterns and the distribution of C4 grasses in North America
Teeri, J. A., & Stowe, L. G. (1976) · Oecologia · doi:10.1007/bf00351210 · Cited by 749
Shackleton, N. J., & Opdyke, N. D. (1976) · Geological Society of America Memoirs · doi:10.1130/mem145-p449 · Cited by 736
Bottinga, Y. (1969) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(69)90092-1 · Cited by 679 · cited 1×
“…reducing conditions in the perennial saline lake because i3C-enriched CO2 is given off during bacterial fermentation of organic material; this may result from the high fractionation factor between CO2 and CHd (Bottinga, 1969; Friedman and O’Neil, 1977; Irwin et al., 1977; Deines, 1980).”
Background
Cited by
Environmental hypotheses of hominin evolution
Potts, R. (1998) · American Journal of Physical Anthropology · doi:10.1002/(sici)1096-8644(1998)107:27+<93::aid-ajpa5>3.0.co;2-x · Cited by 494
Flaked stones and old bones: Biological and cultural evolution at the dawn of technology
Plummer, T. (2004) · American Journal of Physical Anthropology · doi:10.1002/ajpa.20157 · Cited by 359
Development of grasslands and savannas in East Africa during the Neogene
Cerling, T. E. (1992) · Palaeogeography, Palaeoclimatology, Palaeoecology · doi:10.1016/0031-0182(92)90211-m · Cited by 353
Self-citationHominin evolution in settings of strong environmental variability
Potts, R. (2013) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2013.04.003 · Cited by 333
A proxy for all seasons? A synthesis of clumped isotope data from Holocene soil carbonates
Kelson, J. R., Huntington, K. W., Breecker, D. O., Burgener, L. K., Gallagher, T. M., Hoke, G. D., & Petersen, S. V. (2020) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2020.106259 · Cited by 113
Metadata
- Authors
- Cerling, T. E., & Hay, R. L.
- Venue
- Quaternary Research
- Publisher
- Cambridge University Press (CUP)
- Published
- 1986-01
- Volume
- 25
- Issue
- 1
- Pages
- 63-78
- ISSN
- 0033-5894 (ISSN-L)
- 1096-0287
- OpenAlex
- W1994945849
- Cited by
- 279
- References
- 23
- FWCI
- 4.16
- 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: An Isotopic Study of Paleosol Carbonates from Olduvai Gorge. https://app.cochat.ai/papers/10.1016/0033-5894(86)90044-x
- The paper
- Cerling, T. E., & Hay, R. L. (1986). An Isotopic Study of Paleosol Carbonates from Olduvai Gorge. Quaternary Research. https://doi.org/10.1016/0033-5894(86)90044-x
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.
