Abstract
The terrestrial sediment record indicates that the Earth’s climate varied drastically in the Precambrian era (before 550 million years ago), ranging from surface temperatures similar to or higher than today’s to global glaciation events1. The most continuous record of sea surface temperatures of that time has been derived from variations in oxygen isotope ratios of cherts (siliceous sediments)2, but the long-term cooling of the oceans inferred from those data3,4,5 has been questioned because the oxygen isotope signature could have been reset through the exchange with hydrothermal fluids after deposition of the sediments6. Here we show that the silicon isotopic composition of cherts more than 550 million years old shows systematic variations with age that support the earlier conclusion of long-term ocean cooling and exclude post-depositional exchange as the main source of the isotopic variations. In agreement with other lines of evidence1,7, a model of the silicon cycle in the Precambrian era shows that the observed silicon isotope variations imply seawater temperature changes from about 70 °C 3,500 million years ago to about 20 °C 800 million years ago.
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References
Lowe, D. R. & Tice, M. N. Geologic evidences for Archean atmospheric and climatic evolution: fluctuating levels of CO2, CH4, and O2 with an overriding tectonic control. Geology 32, 493–496 (2004)
Knauth, L. P. & Epstein, S. Hydrogen and oxygen isotope ratios in nodular and bedded cherts. Geochim. Cosmochim. Acta 40, 1095–1108 (1976)
Knauth, L. P. & Lowe, D. R. Oxygen isotope geochemistry of cherts from the Onverwacht Group (3.4 billion years) Transvaal, South Africa, with implications for secular variations in the isotopic composition of cherts. Earth Planet. Sci. Lett. 41, 209–222 (1978)
Knauth, L. P. & Lowe, D. R. High Archean climatic temperature inferred from oxygen isotope geochemistry of cherts in the 3.5 Ga Swaziland Supergroup, South Africa. Geol. Soc. Am. Bull. 115, 566–580 (2003)
Knauth, L. P. Temperature and salinity history of the Precambrian ocean: implications for the course of microbial evolution. Palaeogeogr. Palaeoclimatol. Palaeoecol. 219, 53–69 (2005)
Degens, E. T. & Epstein, S. Relationship between 18O/16O ratios in coexisting carbonates, cherts and diatomites. Bull. Am. Assoc. Petrol. Geol. 46, 534–542 (1962)
Kasting, J. F. Methane and climate during the Precambrian era. Precambr. Res. 137, 119–129 (2005)
Beaumont, V. & Robert, F. Nitrogen isotope ratios of kerogens in Precambrian cherts: A record for the evolution of atmosphere chemistry?. Precambr. Res. 96, 63–82 (1999)
Schopf, J. W. & Klein, C. (eds). The Proterozoic Biosphere (Cambridge Univ. Press, New York, 1992)
De La Rocha, C. L., Brzezinski, M. A. & DeNiro, M. Silicon-isotope composition of diatoms as an indicator of past oceanic change. Nature 395, 680–683 (1998)
De La Rocha, C. L., Brzezinski, M. A. & DeNiro, M. A first look at the distribution of the stable isotopes of silicon in natural waters. Geochim. Cosmochim. Acta 61, 2467–2477 (2000)
Ding, T. P. et al. Silicon Isotope Geochemistry (Geological Publishing House, Beijing, 1996)
Jiang, S-Y., Palmer, M. R., Peng, Q-M. & Yang, J-H. Chemical and stable isotopic compositions of Proterozoic metamorphosed evaporites and associated tourmalines from Houxianyu borate deposit, eastern Liaoning, China. Chem. Geol. 135, 189–211 (1997)
Kolodny, Y. & Epstein, S. Stable isotope geochemistry of deep sea cherts. Geochim. Cosmochim. Acta 40, 1195–1209 (1976)
De La Rocha, C. L., Brzezinski, M. A. & DeNiro, M. Fractionation of silicon isotopes by marine diatoms during biogenic silica formation. Geochim. Cosmochim. Acta 61, 5051–5056 (1997)
Ding, Y., Wan, D., Wang, C. & Zhang, F. F. Silicon isotope compositions of dissolved silicon suspended in the Yangtze River, China. Geochim. Cosmochim. Acta 68, 205–216 (2004)
Tréguer, P. et al. The silica balance in the world ocean: a reestimate. Science 268, 375–379 (1995)
Siever, R. The silica cycle in the Precambrian. Geochim. Cosmochim. Acta 56, 3265–3272 (1992)
Von Damm, K. L., Bischoff, J. L. & Rosenbauer, R. J. Quartz solubility in hydrothermal seawater—an experimental study and equation describing quartz solubility for up to 0.5N NaCl solutions. Am. J. Sci. 291, 977–1007 (1991)
Rimstidt, J. D. & Barnes, H. L. The kinetics of silica water reactions. Geochim. Cosmochim. Acta 44, 1683–1699 (1980)
Gunnarsson, I. & Arnorsson, S. Amorphous silica solubility and the thermodynamic properties of H4SiO4 in the range of 0° to 350°C at Psat . Geochim. Cosmochim. Acta 64, 2295–2307 (2000)
Douthitt, C. B. The geochemistry of the stable isotopes of silicon. Geochim. Cosmochim. Acta 46, 1449–1458 (1982)
Basile-Doelsch, I., Meunier, J-D. & Parron, C. Another continental pool in the terrestrial silicon cycle. Nature 433, 399–402 (2005)
Ziegler, K., Chadwick, O. A., Brzezinski, M. A. & Kelly, E. F. Natural variations of δ30Si ratios during progressive basalt weathering, Hawaiian Islands. Geochim. Cosmochim. Acta 69, 4597–4610 (2005)
Schopf, J. W. (ed.). Earth’s Earliest Biosphere: its Origin and Evolution (Princeton Univ. Press, Princeton, New Jersey, 1983)
Allison, C. W. & Awramik, S. Organic-walled microfossils from earliest Cambrian or latest Proterozoic Tindir Group rocks, Northwest Canada. Precambr. Res. 43, 253–294 (1989)
Karpeta, W. P. Bedded cherts in the Rietgat Formation, Hartbeesfontein, South Africa: a late Archean to early Proterozoic magadiitic alkaline playa lake deposit?. South Afr. J. Geol. 92, 29–36 (1989)
Awramik, S. M. et al. Prokaryotic and eukaryotic microfossils from a Proterozoic–Phanerozoic transition in China. Nature 315, 655–658 (1985)
Karhu, J. & Epstein, S. The implication of the oxygen isotope records in coexisting cherts and phosphates. Geochim. Cosmochim. Acta 50, 1745–1756 (1986)
Rollion-Bard, C. & Chaussidon, M. France-Lanord, Ch. pH control on oxygen isotopic composition of symbiotic corals. Earth Planet. Sci. Lett. 215, 275–288 (2003)
Acknowledgements
We thank P. Knauth for constructive and critical reviews, which greatly helped in clarifying the text with regard to the qualitative significance of the thermometric equations proposed for silicon isotopes. We thank W. Schopf, S. Awramik, P. Knauth and the late S. Epstein for providing an unlimited and disinterested access to the most representative samples of their own collections. Author Contributions Both authors contributed equally to this work.
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Robert, F., Chaussidon, M. A palaeotemperature curve for the Precambrian oceans based on silicon isotopes in cherts. Nature 443, 969–972 (2006). https://doi.org/10.1038/nature05239
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DOI: https://doi.org/10.1038/nature05239
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