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 Professor Richard Graham ROBERTS (nicknamed ‘Bert’)
Professor Richard Graham ROBERTS (nicknamed ‘Bert’)

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Areas of expertise:
archaeology, palaeontology, luminescence dating, landscape evolution, climate change, megafaunal extinction, human colonisation of Australia and Indonesia, Jinmium and Lake Mungo archaeology, Aboriginal rock art, Australian megafauna mass extinction, the ‘Hobbit’, Flores

Professor Richard ‘Bert’ Roberts received his training in the Earth sciences, and developed a particular research interest in methods of dating archaeological and palaeontological events of the last half-million years. To do this, he helped establish a luminescence dating laboratory at the University of Wollongong. Bert has applied luminescence dating to questions about landscape evolution, climate change, megafaunal extinction and the human colonisation of Australia and Indonesia. In the 1990s, Bert dated the oldest-known archaeological sites in Australia and showed that people first reached this continent 50,000–60,000 years ago. He has since redated the controversial Jinmium and Lake Mungo archaeological sites, and has contributed to debates on the age of Aboriginal rock art and the timing and cause of mass extinction of the Australian megafauna. In 2004, Bert was involved in the discovery and dating of the ‘Hobbit’, a new species of tiny human found on the eastern Indonesian island of Flores. His current archaeological projects involve dating of stone-age sites in Southeast Asia, the Indian subcontinent, the Arabian peninsula and sub-Saharan Africa, and his interests in megafaunal extinction extend from arid Australia to the arctic tundra of Siberia, in search of the remains of the last woolly mammoths.

1981 BSc (Hons) in Geography (1st Class) University of Wales, Aberystwyth, UK.
1984 MSc in Geography (by research), University of British Columbia, Canada.
1991 PhD in Geography, University of Wollongong, NSW, Australia.

Employment history (post-PhD):
2004–present Professor, School of Earth & Environmental Sciences, University of Wollongong.

2001–2006 ARC Senior Research Fellow, School of Earth & Environmental Sciences, University of Wollongong.

1996–2001 ARC Queen Elizabeth II Fellow, Department of Earth Sciences, La Trobe University & School of Earth Sciences, University of Melbourne.

1994–1996 Research Fellow, Division of Archaeology and Natural History, Research School of Pacific and Asian Studies, Australian National University.

1992–1994 Postdoctoral Fellow, Department of Prehistory, Research School of Pacific Studies, Australian National University.

1991–1992 Visiting Fellow, Research Laboratory for Archaeology and the History of Art, Oxford University, UK.

Competitive grant funding, 2000–2006: total of $4.6 million
2007 University of Wollongong GeoQuEST Research Centre ($20,000)
2006 ARC Discovery Project Grant ($316,000), University of Wollongong RIBG Pool 2 Grants ($65,000 and $65,000), ARC LIEF Grant ($700,000)
2005 ARC LIEF Grants ($397,000 and $268,000), ARC Discovery Project Grant ($490,000), University of Wollongong RIBG Pool 2 Grant ($33,000), University of Wollongong URC Small Grant ($17,000), ARC Research Network Grant ($1,500,000).
2004 ARC LIEF Grant ($110,000), University of Wollongong RIBG Pool 2 Grant ($70,000).
2003 ARC Special Research Initiatives ($40,000 and $10,000).
2002 University of Wollongong Start Up Grant ($15,000).
2001 ARC Large Grant ($218,500), AINSE Grant ($6,700).
2000 ARC Large Grant ($134,000), AINSE Grant ($6,700), University of Melbourne Major Equipment Fund ($115,000).


Refereed papers

Journal articles
1.David, B., Roberts, R.G., Magee, J., Mialanes, J., Turney, C., Bird, M., White, C., Fifield, L.K. & Tibby, J. (2007) Sediment mixing at Nonda Rock: investigations of stratigraphic integrity at an early archaeological site in northern Australia, and implications for the human colonisation of the continent. Journal of Quaternary Science 22 (in press).

2.Westaway, K.E., Zhao, J.-x., Roberts, R.G., Chivas, A.R., Morwood, M.J. & Sutikna, T. (2007) Initial speleothem results from western Flores and eastern Java, Indonesia: were climate changes from 47 to 5 ka responsible for the extinction of Homo floresiensis? Journal of Quaternary Science 22 (in press).

3.Westgate, J.A., Preece, S.J., Froese, D.G., Pearce, N.J.G., Roberts, R.G., Demuro, M., Hart, W.K. & Perkins, W. (2007) Changing ideas on the identity and stratigraphic significance of the Sheep Creek tephra beds in Alaska and the Yukon Territory, northwestern North America. Quaternary International (in press).

4.Kershaw, A.P., McKenzie, G.M., Porch, N., Roberts, R.G., Brown, J., Heijnis, H., Orr, M.L., Jacobsen, G. & Newall, P.R. (2007) A high resolution record of vegetation and climate through the last glacial cycle from Caledonia Fen, south-eastern highlands of Australia. Journal of Quaternary Science 22 (in press).

5.Westaway, K.E., Morwood, M.J., Roberts, R.G., Zhao, J.-x., Sutikna, T., Saptomo, E.W. & Rink, W.J. (2007) Establishing the time of initial human occupation of Liang Bua, western Flores, Indonesia. Quaternary Geochronology 2, 337–343.

6.Stephens, M., Roberts, R.G., Lian, O.B. & Yoshida, H. (2007) Progress in optical dating of guano-rich sediments associated with the Deep Skull, West Mouth of the Great Cave of Niah, Sarawak, Borneo. Quaternary Geochronology 2, 330–336.

7.Brook, B.W., Bowman, D.M.J.S., Burney, D.A., Flannery, T.F., Gagan, M.K., Gillespie, R., Johnson, C.N., Kershaw, P., Magee, J.W., Martin, P.S., Miller, G.H., Peiser, B. & Roberts, R.G. (2007) Would the Australian megafauna have become extinct if humans had never colonised the continent? Quaternary Science Reviews 26, 560–564.

8.Prideaux, G.J., Long, J.A., Ayliffe, L.K., Hellstrom, J.C., Pillans, B., Boles, W.E., Hutchinson, M.N., Roberts, R.G., Cupper, M.L., Arnold, L.J., Devine, P.D. & Warburton, N.M. (2007) An arid-adapted middle Pleistocene vertebrate fauna from south-central Australia. Nature 445, 422–425.

9.Prideaux, G.J., Roberts, R.G., Megirian, D., Westaway, K.E., Hellstrom, J.C. & Olley, J.M. (2007) Mammalian responses to Pleistocene climate change in southeastern Australia. Geology 35, 33–36.

10.Turney, C.S.M., Roberts, R.G. & Jacobs, Z. (2006) Progress and pitfalls in radiocarbon dating. Nature 443, E3.

11.Lian, O.B. & Roberts, R.G. (2006) Dating the Quaternary: progress in luminescence dating of sediments. Quaternary Science Reviews 25, 2449–2468.

12.Olley, J.M., Roberts, R.G., Yoshida, H. & Bowler, J.M. (2006) Single-grain optical dating of grave-infill associated with human burials at Lake Mungo, Australia. Quaternary Science Reviews 25, 2469–2474.

13.Westaway, K.E. & Roberts, R.G. (2006) A dual-aliquot regenerative-dose protocol (DAP) for thermoluminescence (TL) dating of quartz sediments using the light-sensitive and isothermally-stimulated red emissions. Quaternary Science Reviews 25, 2513–2528.

14.Anderson, A., Roberts, R., Dickinson, W., Clark, G., Burley, D., de Biran, A., Hope, G. & Nunn, P. (2006) Times of sand: sedimentary history and archaeology at the Sigatoka Dunes, Fiji. Geoarchaeology 21, 131–154.

15.Bednarik, R.G., Kumar, G., Watchman, A. & Roberts, R.G. (2005) Preliminary results of the EIP Project. Rock Art Research 22, 147–197.

16.Roberts, R.G., Morwood, M.J. & Westaway, K.E. (2005) Illuminating Southeast Asian prehistory: new archaeological and palaeoanthropological frontiers for luminescence dating. Asian Perspectives 44, 293–319.

17.Morwood, M.J., Brown, P., Jatmiko, Sutikna, T., Saptomo, E.W., Westaway, K.E., Awe Due, R., Roberts, R.G., Maeda, T., Wasisto, S. & Djubiantono, T. (2005) Further evidence for small-bodied hominins from the Late Pleistocene of Flores, Indonesia. Nature 437, 1012–1017.

18.Galbraith, R.F., Roberts, R.G. & Yoshida, H. (2005) Error variation in OSL palaeodose estimates from single aliquots of quartz: a factorial experiment. Radiation Measurements 39, 289–307.

19.Morwood, M.J., Soejono, R.P., Roberts, R.G., Sutikna, T., Turney, C.S.M., Westaway, K.E., Rink, W.J., Zhao, J.-x., van den Bergh, G.D., Rokus Awe Due, Hobbs, D.R., Moore, M.W., Bird, M.I. & Fifield, L.K. (2004) Archaeology and age of a new hominin from Flores in eastern Indonesia. Nature 431, 1087–1091.

20.Olley, J.M., De Deckker, P., Roberts, R.G., Fifield, L.K., Yoshida, H. & Hancock, G. (2004) Optical dating of deep-sea sediments using single grains of quartz: comparison with radiocarbon ages and implications for the marine carbon reservoir. Sedimentary Geology 169, 175–189.

21.Olley, J.M., Pietsch, T. & Roberts, R.G. (2004) Optical dating of Holocene sediments from a variety of geomorphic settings using single grains of quartz. Geomorphology 60, 337–358.

22.Bird, M.I., Turney, C.S.M., Fifield, L.K., Smith, M.A., Miller, G.H., Roberts, R.G. & Magee, J.W. (2003) Radiocarbon dating of organic- and carbonate-carbon in Genyornis and Dromaius eggshell using stepped combustion and stepped acidification. Quaternary Science Reviews 22, 1805–1812.

23.Yoshida, H., Roberts, R.G. & Olley, J.M. (2003) Progress towards single-grain optical dating of fossil mud-wasp nests and associated rock art in northern Australia. Quaternary Science Reviews 22, 1273–1278.

24.Bowler, J.M.†, Johnston, H., Olley, J.M., Prescott, J.R., Roberts, R.G.†, Shawcross, W. & Spooner, N.A.† (2003) New ages for human occupation and climatic change at Lake Mungo, Australia. Nature 421, 837–840. (Authors listed alphabetically with note † These authors contributed equally to this work)

25.Kumar, G., Bednarik, R.G., Watchman, A., Roberts, R.G., Lawson, E. & Patterson, C. (2003) 2002 progress report of the EIP Project. Rock Art Research 20, 70–71.

26.Kumar, G., Bednarik, R.G., Watchman, A., Roberts, R.G., Lawson, E. & Patterson, C. (2002) Sample collection for analytical study and scientific dating of the early Indian petroglyphs and rock paintings by the International Commission. Purakala (Journal of the Rock Art Society of India) 13, 21–27.

27.Holdaway, R.N., Roberts, R.G., Beavan-Athfield, N.R., Olley, J.M. & Worthy, T.H. (2002) Optical dating of quartz sediments and accelerator mass spectrometry 14C dating of bone gelatin and moa eggshell: a comparison of age estimates for non-archaeological deposits in New Zealand. Journal of the Royal Society of New Zealand 32, 463–505.

28.Turney, C.S.M., Bird, M.I. & Roberts, R.G. (2001) Elemental δ13C at Allen’s Cave, Nullarbor Plain, Australia: assessing post-depositional disturbance and reconstructing past environments. Journal of Quaternary Science 16, 779–784.

29.Roberts, R.G., Yoshida, H., Flannery, T.F., Ayliffe, L.K., Olley, J.M., Prideaux, G.J., Laslett, G.M., Baynes, A., Smith, M.A., Jones, R. & Smith, B.L. (2001) Archaeology and Australian megafauna. Science 294, 7a.

30.Roberts, R.G., Flannery, T.F., Ayliffe, L.K., Yoshida, H., Olley, J.M., Prideaux, G.J., Laslett, G.M., Baynes, A., Smith, M.A., Jones, R. & Smith, B.L. (2001) New ages for the last Australian megafauna: continent-wide extinction about 46,000 years ago. Science 292, 1888–1892.

31.Turney, C.S.M., Bird, M.I., Fifield, L.K., Roberts, R.G., Smith, M., Dortch, C.E., Grün, R., Lawson, E., Ayliffe, L.K., Miller, G.H., Dortch, J. & Cresswell, R.G. (2001) Early human occupation at Devil’s Lair, southwestern Australia 50,000 years ago. Quaternary Research 55, 3–13.

32.Roberts, R.G., Galbraith, R.F., Yoshida, H., Laslett, G.M. & Olley, J.M. (2000) Distinguishing dose populations in sediment mixtures: a test of single-grain optical dating procedures using mixtures of laboratory-dosed quartz. Radiation Measurements 32, 459–465.

33.Yoshida, H., Roberts, R.G., Olley, J.M., Laslett, G.M. & Galbraith, R.F. (2000) Extending the age range of optical dating using single ‘supergrains’ of quartz. Radiation Measurements 32, 439–446.

34.Gillespie, R. & Roberts, R.G. (2000) On the reliability of age estimates for human remains at Lake Mungo. Journal of Human Evolution 38, 727–732.

35.Olley, J.M., Caitcheon, G.G. & Roberts, R.G. (1999) The origin of dose distributions in fluvial sediments, and the prospect of dating single grains from fluvial deposits using optically stimulated luminescence. Radiation Measurements 30, 207–217.

36.Roberts, R.G., Galbraith, R.F., Olley, J.M., Yoshida, H. & Laslett, G.M. (1999) Optical dating of single and multiple grains of quartz from Jinmium rock shelter, northern Australia: Part II, results and implications. Archaeometry 41, 365–395.

37.Galbraith, R.F., Roberts, R.G., Laslett, G.M., Yoshida, H. & Olley, J.M. (1999) Optical dating of single and multiple grains of quartz from Jinmium rock shelter, northern Australia: Part I, experimental design and statistical models. Archaeometry 41, 339–364.

38.Murray, A.S. & Roberts, R.G. (1998) Measurement of the equivalent dose in quartz using a regenerative-dose single-aliquot protocol. Radiation Measurements 29, 503–515.

39.Roberts, R., Yoshida, H., Galbraith, R., Laslett, G., Jones, R. & Smith, M. (1998) Single-aliquot and single-grain optical dating confirm thermoluminescence age estimates at Malakunanja II rock shelter in northern Australia. Ancient TL 16, 19–24.

40.Roberts, R., Bird, M., Olley, J., Galbraith, R., Lawson, E., Laslett, G., Yoshida, H., Jones, R., Fullagar, R., Jacobsen, G. & Hua, Q. (1998) Optical and radiocarbon dating at Jinmium rock shelter in northern Australia. Nature 393, 358–362.

41.Roberts, R.G. (1997) Luminescence dating in archaeology: From origins to optical. Radiation Measurements 27, 819–892.

42.Roberts, R., Walsh, G., Murray, A., Olley, J., Jones, R., Morwood, M., Tuniz, C., Lawson, E., Macphail, M., Bowdery, D. & Naumann, I. (1997) Luminescence dating of rock art and past environments using mud-wasp nests in northern Australia. Nature 387, 696–699.

43.Murray, A.S. & Roberts, R.G. (1997) Determining the burial time of single grains of quartz using optically stimulated luminescence. Earth and Planetary Science Letters 152, 163–180.

44.Olley, J.M., Roberts, R.G. & Murray, A.S. (1997) A novel method for determining residence times of river and lake sediments based on disequilibrium in the thorium decay series. Water Resources Research 33, 1319–1326.

45.David, B., Roberts, R., Tuniz, C., Jones, R. & Head, J. (1997) New optical and radiocarbon dates from Ngarrabullgan Cave, a Pleistocene archaeological site in Australia: Implications for the comparability of time clocks and for the human colonization of Australia. Antiquity 71, 183–188.

46.Murray, A.S., Roberts, R.G. & Wintle, A.G. (1997) Equivalent dose measurement using a single aliquot of quartz. Radiation Measurements 27, 171–184.

47.Olley, J.M., Roberts, R.G. & Murray, A.S. (1997) Disequilibria in the uranium decay series in sedimentary deposits at Allen’s Cave, Nullarbor Plain, Australia: Implications for dose rate determinations. Radiation Measurements 27, 433–443.

48.David, B. & 34 others (listed alphabetically) (1996) The Ngarrabullgan Homeland Project: Current research in Kuku Djungan country, north Queensland. Australian Archaeology 43, 32–36.

49.Nott, J. & Roberts, R.G. (1996) Time and process rates over the past 100 My: A case for dramatically increased landscape denudation rates during the late Quaternary in northern Australia. Geology 24, 883–887.

50.Olley, J.M., Murray, A. & Roberts, R.G. (1996) The effects of disequilibria in the uranium and thorium decay chains on burial dose rates in fluvial sediments. Quaternary Science Reviews 15, 751–760.

51.Roberts, R.G., Spooner, N.A., Jones, R., Cane, S., Olley, J.M., Murray, A.S. & Head, M.J. (1996) Preliminary luminescence dates for archaeological sediments on the Nullarbor Plain, South Australia. Australian Archaeology 42, 7–16.

52.Dortch, C.E. & Roberts, R.G. (1996) An evaluation of radiocarbon chronologies at Miriwun rock shelter and the Monsmont site, Ord valley, east Kimberley, Western Australia. Australian Archaeology 42, 24–34.

53.Roberts, R.G., Jones, R. & Smith, M.A. (1995) Reply to Bowdler (1995). Australian Archaeology 41, 56.

54.Roberts, R.G. & Jones, R. (1994) Luminescence dating of sediments: New light on the human colonisation of Australia. Australian Aboriginal Studies 1994/2, 2–17.

55.Roberts, R.G., Jones, R., Spooner, N.A., Head, M.J., Murray, A.S. & Smith, M.A. (1994) The human colonisation of Australia: Optical dates of 53,000 and 60,000 years bracket human arrival at Deaf Adder Gorge, Northern Territory. Quaternary Science Reviews 13, 575–583.

56.Roberts, R.G., Jones, R. & Smith, M.A. (1994) Beyond the radiocarbon barrier in Australian prehistory. Antiquity 68, 611–616.

57.Roberts, R.G., Spooner, N.A. & Questiaux, D.G. (1994) Palaeodose underestimates caused by extended duration preheats in the optical dating of quartz. Radiation Measurements 23, 647–653.

58.Roberts, R.G., Spooner, N.A. & Questiaux, D.G. (1994) Optical dating of quartz: A comment on Stokes and Gaylord (1993). Quaternary Research 42, 108–109.

59.East, T.J., Nanson, G.C. & Roberts, R.G. (1993) Geomorphological stability of sites for the long-term containment of uranium mining wastes in the seasonally wet tropics, northern Australia. Zeitschrift für Geomorphologie 87, 171–182.

60.Nanson, G.C., East, T.J. & Roberts, R.G. (1993) Quaternary stratigraphy, geochronology and evolution of the Magela Creek catchment in the monsoon tropics of northern Australia. Sedimentary Geology 83, 277–302.

61.Roberts, R.G., Jones, R. & Smith, M.A. (1993) Optical dating at Deaf Adder Gorge, Northern Territory, indicates human occupation between 53,000 and 60,000 years ago. Australian Archaeology 37, 58–59.

62.Roberts, R.G., Spooner, N.A. & Questiaux, D.G. (1993) Cautions on the use of extended duration preheats in the optical dating of quartz. Ancient TL 11, 47–54.

63.Wintle, A.G., Questiaux, D.G., Roberts, R.G. & Spooner, N.A. (1993) Comment on dating loess up to 800 ka by thermoluminescence. Geology 21, 568.

64.Roberts, R.G., Jones, R. & Smith, M.A. (1990) Early dates at Malakunanja II, a reply to Bowdler. Australian Archaeology 31, 94–97.

65.Roberts, R.G., Jones, R. & Smith, M.A. (1990) Stratigraphy and statistics at Malakunanja II: Reply to Hiscock. Archaeology in Oceania 25, 125–129.

66.Roberts, R.G., Jones, R. & Smith, M.A. (1990) Thermoluminescence dating of a 50,000 year-old human occupation site in northern Australia. Nature 345, 153–156.

67.Roberts, R.G. & Church, M.A. (1986) The sediment budget in severely disturbed watersheds, Queen Charlotte Ranges, British Columbia. Canadian Journal of Forest Research 16, 1092–1106.

Book chapters and conference papers
68.Roberts, R.G. & Jacobs, Z. (2007) Dating in Landscape Archaeology. In: B. David & J. Thomas (Eds) Handbook of Landscape Archaeology. World Archaeological Congress (WAC) Research Handbooks in Archaeology, Left Coast Press, Walnut Creek (in press).

69.Roberts, R.G. & Galbraith, R.F. (2007) Statistical aspects of equivalent dose and error calculation in luminescence dating. In: M. Krbetschek (Ed.) Luminescence Dating: An Introduction and Handbook. Springer, Berlin (in press).

70.Sivia, D.S., Burbidge, C., Roberts, R.G. & Bailey, R.M. (2004). A Bayesian approach to the evaluation of equivalent doses in sediment mixtures for luminescence dating. In: R. Fischer, R. Preuss & U. von Toussaint (Eds) Bayesian Inference and Maximum Entropy Methods in Science and Engineering, pp. 305–311. Conference Proceedings 735, American Institute of Physics.

71.Roberts, R.G. (2004) Luminescence dating in archaeology, with specific reference to Southeast Asia. In: Proceedings of the National Conference on Science and Technology in Preservation of National Heritage – Integrating Science, Technology and Heritage, pp. 42–46. Malaysian Institute for Nuclear Technology Research, Kajang, Malaysia (ISBN 967-9970-18-3).

72.Roberts, R.G. (2003) Thermoluminescence dating. In: G. Burenhult (Ed.) People of the Past: The Epic Story of Human Origins and Development, p. 152. Fog City Press, San Francisco.

73.Roberts, R.G. (2001) The Celtic chronologist: Rhys Jones and the dating of the human colonisation of Australia. In: A. Anderson, I. Lilley & S. O’Connor (Eds) Histories of Old Ages: Essays in Honour of Rhys Jones, pp. 89–93. Pandanus Books, Research School of Pacific & Asian Studies, Australian National University, Canberra.

74.Roberts, R.G. & Jones, R. (2001) Chronologies of carbon and of silica: evidence concerning the dating of the earliest human presence in northern Australia. In: P.V. Tobias, M.A. Raath, J. Moggi-Cecchi & G.A. Doyle (Eds) Humanity from African Naissance to Coming Millennia: Colloquia in Human Biology and Palaeoanthropology, pp. 239–248. Firenze University Press, Firenze & Witwatersrand University Press, Johannesburg.

75.Troja, S.O. & Roberts, R.G. (2000) Luminescence dating. In: E. Ciliberto & G. Spoto (Eds) Modern Analytical Methods in Art and Archaeology, pp. 585–640. John Wiley, New York.

76.Roberts, R.G., Walsh, G.L., Olley, J.M., Murray, A.S., Macphail, M.K., Naumann, I.D., Jones, R. & Morwood, M.J. (2000) Rock-picture chronologies and palaeoenvironmental records from fossil mud-wasp nests: preliminary investigations using optical dating. In: G.K. Ward & C. Tuniz (Eds) Advances in Dating Australian Rock-Markings, pp. 40–44. Occasional AURA Publication 10, Australian Rock Art Research Association, Melbourne.

77.Prideaux, G.J., Gully, G.A., Ayliffe, L.K., Bird, M.I. & Roberts, R.G. (2000) Tight Entrance Cave, southwestern Australia: a late Pleistocene vertebrate deposit spanning more than 180 ka. Journal of Vertebrate Paleontology 20(3, Supplement), 62A–63A.

78.Flannery, T.F. & Roberts, R.G. (1999) Late Quaternary extinctions in Australasia: An overview. In: R.D.E. MacPhee (Ed.) Extinctions in Near Time: Causes, Contexts, and Consequences, Chapter 10 (pp. 239–255). Kluwer Academic/Plenum Publishers, New York.

79.Roberts, R.G., Jones, R. & Smith, M.A. (1998) Beyond the radiocarbon barrier in Australian prehistory. In: T. Murray (Ed.) Archaeology of Aboriginal Australia: A Reader, Chapter 2b (pp. 19–25). Allen & Unwin, Sydney.

80.Roberts, R.G. (1993) Thermoluminescence dating. In: G. Burenhult (Ed.) The First Humans: Human Origins and History to 10,000 BC, p. 152. Harper Collins, San Francisco & University of Queensland Press, Brisbane.

81.Roberts, R.G. & Jones, R. (1991) The test of time: Physical dating methods in archaeology. Australian Natural History 23, 858–865.

82.Roberts, R.G. (1991) Horses for courses: Comparative TL and C-14 dating of two types of water-lain deposit in northern Australia. In: R. Gillespie (Ed.) Proceedings of the Quaternary Dating Workshop 1990, pp. 38–40. Dept of Biogeography & Geomorphology, Australian National University, Canberra.

Other papers and publications
83.Grün, R., Radtke, U. & Roberts, R.G. (2007) Obituary: Motoji Ikeya (1940–2006). Quaternary Geochronology 2, 2–3.

84.Grün, R. & Roberts, R.G. (2007) Editorial. Quaternary Geochronology 2, 1.

85.Lian, O.B. & Roberts, R.G. (Eds) (2006) “Dating the Quaternary: Progress in Luminescence Dating of Sediments”, Quaternary Science Reviews (Special Issue) v. 25, nos 19–20, 227 pp.

86.Turney, C., Roberts, R. & Westaway, K. (2005) Dating Middle-earth. Nature Australia 28(6), 70–71.

87.Morwood, M., Sutikna, T. & Roberts, R. (2005) The people time forgot. National Geographic Magazine April 2005, 2–15.

88.Roberts, R. (2002) Obituary: Professor Rhys Jones, AO. Australian Aboriginal Studies 2002/1, 114–115.

89.Roberts, R. (2001) The last Australian megafauna. Australasian Science 22(9), 40–41.

90.Roberts, R. & M. Smith (2001) Time matters. Nature Australia 26(12), 4.

91.Roberts, R.G. (2000) Luminescence dating of Kimberley rock art. In: Bradshaw Art of the Kimberley (ed. G.L. Walsh), Chapter 7 (pp. 46–49). Takarakka Nowan Kas Publications, Toowong.

92.Roberts, R. (1998) Grains of truth? Nature Australia (formerly Australian Natural History) 26(3), 44.

93.Roberts, R. (1998) Dating the past from 100,000 to 10,000 years. The Sydney Morning Herald, 1 June 1998, p. 19.

94.Roberts, R.G. (1995) Review of Ecological, sedimentary and geochemical evolution of the late-glacial to post-glacial Åmose lacustrine basin, Denmark by N. Noe-Nygaard (Scandinavian University Press, Oslo, 436 pp). Nomen Nudum 24, 11–13.

95.Roberts, R.G., Uren, C.J. & Murray, A.S. (1993) Thermoluminescence dating techniques at the Alligator Rivers Region Research Institute. Supervising Scientist for the Alligator Rivers Region, Technical Memorandum 41, AGPS, Canberra, 63 pp.

96.Roberts, R.G. (1993) Thermoluminescence dating of the human colonisation of Australia. Australian Institute of Aboriginal and Torres Strait Islander Studies, Canberra, Final Report, 51 pp.

97.Roberts, R.G., Nanson, G.C. & East, T.J. (1991) Sediment budgets and Quaternary history of the Magela Creek catchment, tropical northern Australia. Supervising Scientist for the Alligator Rivers Region, Sydney, Open File Record 80, 569 pp.

98.East, T.J., Nanson, G.C., Roberts, R.G., Murray, A.S. & Clark, R.L. (1991) Long-term geomorphological stability of Magela Creek system. In: Supervising Scientist for the Alligator Rivers Region, Annual Research Summary 1988–89, pp. 133–135. AGPS, Canberra.

99.East, T.J., Roberts, R.G. & Nanson, G.C. (1991) Bedload transport in the Magela Creek upstream of Mudginberri Billabong. In: Supervising Scientist for the Alligator Rivers Region, Annual Research Summary 1988–89, pp. 135–137. AGPS, Canberra.

100.East, T.J., Roberts, R.G. & Nanson, G.C. (1991) Genesis and chronology of Magela Creek bedload sand source areas. In: Supervising Scientist for the Alligator Rivers Region, Annual Research Summary 1988–89, pp. 137–139. AGPS, Canberra.

101.Nanson, G.C., East, T.J., Roberts, R.G., Clark, R.L. & Murray, A.S. (1990) Quaternary evolution and landform stability of Magela Creek catchment near the Ranger uranium mine, northern Australia. Supervising Scientist for the Alligator Rivers Region, Sydney, Open File Record 63, 119 pp.

102.Roberts, R.G. (1989) Geomorphological field observations. In: Alligator Rivers Analogue Project, Progress Report 1/9/89–30/11/89, pp. 9–11. Lucas Heights Research Laboratories, Australian Nuclear Science & Technology Organisation, Sydney.

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104.East, T.J., Roberts, R.G. & Nanson, G.C. (1987) Contemporary bedload sediment transport in Magela Creek near Ranger. In: Supervising Scientist for the Alligator Rivers Region, Annual Research Summary 1986–87, pp. 22–25. AGPS, Canberra.

105.Roberts, R.G. (1987) Stream channel morphology: Major fluvial disturbances in logged watersheds on the Queen Charlotte Islands. British Columbia Ministry of Forests and Lands, Victoria, Land Management Report 48, 72 pp.
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