Low heat flow inferred from >4 Gyr zircons suggests Hadean plate boundary interactions (original) (raw)

Nature volume 456, pages 493–496 (2008)Cite this article

Abstract

The first ∼600 million years of Earth history (the ‘Hadean’ eon) remain poorly understood, largely because there is no rock record dating from that era. Detrital Hadean igneous zircons from the Jack Hills1, Western Australia, however, can potentially provide insights into the conditions extant on our planet at that time. Results of geochemical investigations2,3,4,5,6,7,8,9,10,11,12,13 using these ancient grains have been interpreted to suggest the presence of a hydrosphere2,3,4,7,8 and continental crust9,10 before 4 Gyr. An underexploited characteristic of the >4 Gyr zircons is their diverse assemblage of mineral inclusions14,15,16,17. Here we present an examination of over 400 Hadean zircons from Jack Hills, which shows that some inclusion assemblages are conducive to thermobarometry. Our thermobarometric analyses of 4.02–4.19-Gyr-old inclusion-bearing zircons constrain their magmatic formation conditions to about 700 °C and 7 kbar. This result implies a near-surface heat flow of ∼75 mW m-2, about three to five times lower than estimates of Hadean global heat flow. As the only site of magmatism on modern Earth that is characterized by heat flow of about one-quarter of the global average is above subduction zones, we suggest that the magmas from which the Jack Hills Hadean zircons crystallized were formed largely in an underthrust environment, perhaps similar to modern convergent margins.

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References

  1. Spaggiari, C. V., Pidgeon, R. T. & Wilde, S. A. The Jack Hills greenstone belt, Western Australia. Part 2: Lithological relationships and implications for the deposition of ≥4.0 Ga detrital zircons. Precambr. Res. 155, 261–286 (2007)
    Article ADS CAS Google Scholar
  2. Mojzsis, S. J., Harrison, T. M. & Pidgeon, R. T. Oxygen-isotope evidence from ancient zircons for liquid water at the Earth's surface 4,300 Myr ago. Nature 409, 178–181 (2001)
    Article ADS CAS Google Scholar
  3. Cavosie, A. J., Valley, J. W. & Wilde, S. A. Magmatic δ18O in 4400–3900 Ma detrital zircons: a record of the alteration and recycling of crust in the Early Archean. Earth Planet. Sci. Lett. 235, 663–681 (2005)
    Article ADS CAS Google Scholar
  4. Trail, D. et al. Constraints on Hadean zircon protoliths from oxygen isotopes, REEs and Ti-thermometry. Geochem. Geophys. Geosyst. 8, Q06014 10.1029/2006GC001449 (2007)
    Article Google Scholar
  5. Turner, G., Harrison, T. M., Holland, G., Mojzsis, S. J. & Gilmour, J. Extinct Pu-244 in ancient zircons. Science 306, 89–91 (2004)
    Article ADS CAS Google Scholar
  6. Turner, G. et al. Pu–Xe, U–Xe, U–Pb chronology and isotope systematics of ancient zircons from Western Australia. Earth Planet. Sci. Lett. 261, 491–499 (2007)
    Article ADS CAS Google Scholar
  7. Watson, E. B. & Harrison, T. M. Zircon thermometer reveals minimum melting conditions on earliest Earth. Science 308, 841–844 (2005)
    Article ADS CAS Google Scholar
  8. Harrison, T. M. & Schmitt, A. K. High sensitivity mapping of Ti distributions in Hadean zircons. Earth Planet. Sci. Lett. 261, 9–19 (2007)
    Article ADS CAS Google Scholar
  9. Harrison, T. M., Schmitt, A. K., McCulloch, M. T. & Lovera, O. M. Early (≥4.5 Ga) formation of terrestrial crust: Lu–Hf, δ18O, and Ti thermometry results for Hadean zircons. Earth Planet. Sci. Lett. 268, 476–486 (2008)
    Article ADS CAS Google Scholar
  10. Harrison, T. M. et al. Heterogeneous Hadean hafnium: Evidence of continental crust at 4.4 to 4.5 Ga. Science 310, 1947–1950 (2005)
    Article ADS CAS Google Scholar
  11. Amelin, Y. Sm–Nd systematics of zircon. Chem. Geol. 211, 375–387 (2005)
    Article ADS Google Scholar
  12. Caro, G. et al. Precise analysis of 142Nd/144Nd in small samples: Application to Hadean zircons from Jack Hills (W. Australia) and diamond inclusions from Finsch (S. Africa). Chem. Geol. 247, 253–265 (2008)
    Article ADS CAS Google Scholar
  13. Maas, R. & McCulloch, M. T. The provenance of Archean clastic metasediments in the Narryer gneiss complex, Western Australia: Trace element geochemistry, Nd isotopes, and U–Pb ages from detrital zircons. Geochim. Cosmochim. Acta 55, 1915–1932 (1991)
    Article ADS CAS Google Scholar
  14. Maas, R., Kinny, P. D., Williams, I. S., Froude, D. O. & Compston, W. The Earth’s oldest known crust: A geochronological and geochemical study of 3900–4200 Ma old detrital zircons from Mt Narryer and Jack Hills, Western Australia. Geochim. Cosmochim. Acta 56, 1281–1300 (1992)
    Article ADS CAS Google Scholar
  15. Trail, D., Mojzsis, S. J. & Harrison, T. M. Inclusion mineralogy of pre-4.0 Ga zircons from Jack Hills, Western Australia: A progress report. Geochim. Cosmochim. Acta 68, A743 (2004)
    Google Scholar
  16. Cavosie, A. J., Wilde, S. A., Liu, D., Weiblen, P. & Valley, J. W. Internal zoning and U–Th–Pb chemistry of Jack Hills detrital zircons: a mineral record of early Archean to Mesoproterozoic (4348–1576 Ma) magmatism. Precambr. Res. 134, 251–279 (2004)
    Article ADS Google Scholar
  17. Menneken, M., Nemchin, A. A., Geisler, T., Pidgeon, R. T. & Wilde, S. A. Hadean diamonds in zircon from Jack Hills, Western Australia. Nature 448, 917–920 (2007)
    Article ADS CAS Google Scholar
  18. Anderson, J. L. Status of thermobarometry in granitic batholiths. Trans. R. Soc. Edinb. Earth Sci. 87, 125–138 (1996)
    CAS Google Scholar
  19. Massonne, H.-J. & Szpurka, Z. Thermodynamic properties of white micas on the basis of high-pressure experiments in the systems K2O-MgO-Al2O3-SiO2-H2O and K2O-FeO-Al2O3-SiO2-H2O. Lithos 41, 229–250 (1997)
    Article ADS CAS Google Scholar
  20. Holland, T. J. B. & Powell, R. An internally consistent thermodynamic data set for phases of petrologic interest. J. Metamorph. Geol. 16, 309–343 (1998)
    Article ADS CAS Google Scholar
  21. McLaren, S., Sandiford, M., Powell, R., Neumann, N. & Woodhead, J. Palaeozoic intraplate crustal anatexis in the Mount Painter Province, South Australia: Timing, thermal budgets and the role of crustal heat production. J. Petrol. 47, 2281–2302 (2006)
    Article ADS CAS Google Scholar
  22. Coggon, R. & Holland, T. J. B. Mixing properties of phengitic micas and revised garnet-phengite thermobarometers. J. Metamorph. Geol. 20, 683–696 (2002)
    Article ADS CAS Google Scholar
  23. Helz, R. T. Phase relations of basalts in their melting ranges at PH2O = 5 kb. Part II. Melt composition. J. Petrol. 17, 139–193 (1976)
    Article ADS CAS Google Scholar
  24. Turcotte, D. L. & Schubert, G. Geodynamics: Applications of Continuum Physics to Geological Problems 2nd edn, 133 (Wiley, 2002)
    Book Google Scholar
  25. Pollack, H. N., Hurter, S. J. & Johnson, J. R. Heat flow from the Earth's interior: analysis of the global data set. Rev. Geophys. 31, 267–280 (1993)
    Article ADS Google Scholar
  26. Bickle, M. J. Heat loss from the Earth: Constraints on Archaean tectonics from the relation between geothermal gradients and the rate of plate production. Earth Planet. Sci. Lett. 40, 301–315 (1978)
    Article ADS Google Scholar
  27. Abbott, D. H. & Hoffman, S. E. Archaean plate tectonics revisited. Part 1. Heat flow, spreading rate, and the age of subducting oceanic lithosphere and their effects on the origin and evolution of continents. Tectonics 3, 429–448 (1984)
    Article ADS Google Scholar
  28. Smith, J. V. The first 800 million years of Earth’s history. Phil. Trans. R. Soc. Lond. A 301, 401–422 (1981)
    Article ADS CAS Google Scholar
  29. Sleep, N. L. Evolution of the mode of convection within terrestrial planets. J. Geophys. Res. 105, 17563–17578 (2000)
    Article ADS Google Scholar
  30. Bedini, R. M., Blichert-Toft, J., Boyet, M. & Albarede, F. Isotopic constraints on the cooling of the continental lithosphere. Earth Planet. Sci. Lett. 223, 99–111 (2004)
    Article ADS CAS Google Scholar
  31. Blackwell, D. D., Steele, J. L. & Carter, L. S. in Neotectonics of North America (eds Slemmons, D. B., Engdahl, E. R. and Blackwell, D. D.) 423–437 (DNAG Decade Map 1, Geological Society of America, 1991)
    Google Scholar
  32. White, R. W., Powell, R. W. & Holland, T. J. B. Calculation of partial melting equilibria in the system Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O (NCKFMASH). J. Metamorph. Geol. 19, 139–153 (2001)
    Article ADS CAS Google Scholar

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Acknowledgements

This work was supported by NSF grant EAR-0635969 and ARC grant DP0666497. We acknowledge facility support from the Instrumentation and Facilities Program of the National Science Foundation. We thank R. Powell for advice on using THERMOCALC, F. Kyte for assistance with the EMPA analyses, A. Schmitt and P. Holden for assistance with the ion microprobe analyses, and W. Schopf and A. Kudryavtsev for confocal Raman imaging.

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  1. Institute of Geophysics and Planetary Physics and Department of Earth and Space Sciences, University of California, Los Angeles, California 90095, USA,
    Michelle Hopkins, T. Mark Harrison & Craig E. Manning

Authors

  1. Michelle Hopkins
  2. T. Mark Harrison
  3. Craig E. Manning

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Correspondence toT. Mark Harrison.

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Hopkins, M., Harrison, T. & Manning, C. Low heat flow inferred from >4 Gyr zircons suggests Hadean plate boundary interactions.Nature 456, 493–496 (2008). https://doi.org/10.1038/nature07465

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