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Granite erratics in Beacon Valley, Antarctica

Published online by Cambridge University Press:  14 February 2017

Warren W. Dickinson ,
Grechen Williams ,
Matt Hill ,
Simon C. Cox  and
Joel A. Baker
Warren W. Dickinson*
Affiliation:
Antarctic Research Centre, Victoria University, PO Box 600, Wellington, New Zealand
Grechen Williams
Affiliation:
Antarctic Research Centre, Victoria University, PO Box 600, Wellington, New Zealand
Matt Hill
Affiliation:
GNS Science, Private Bag 30-368, Lower Hutt, New Zealand
Simon C. Cox
Affiliation:
GNS Science, Private Bag 1930, Dunedin, New Zealand
Joel A. Baker
Affiliation:
School of Environment, University of Auckland, Private Bag 92019, Auckland, New Zealand
*
[email protected]
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Abstract

We present the first quantitative attempt at reconciling the source and emplacement of granite erratics in Beacon Valley. The erratics are enigmatic because granite does not crop out in the valley and its nearest subaerial exposure is at least 10 km downstream to the east of the valley. Detailed mapping of the valley shows three types of granite erratics, which are not present in equal amounts and do not show spatial patterns. Pb isotopic and elemental compositions of the erratics eliminate the Metschel Tillite as a source and indicate they derive from the Dry Valley plutons. Our limited study tentatively ties the erratics to suites of plutons, but it does not allow a direct tie of the erratics to specific plutons because of i) the geochemical variability of the plutons and ii) the limited number of erratics that were analysed. Published data suggest the erratics provide evidence of wet-based glaciation, which covered the Dry Valleys and much of Antarctica during the mid-Miocene. Our paper also explains the problems associated with the emplacement of these erratics and the age of the massive ice in Beacon Valley.

Keywords

geochemical fingerprintGranite Harbour Intrusivesgranitoid plutonslead isotopesMcMurdo Dry Valleyssouthern Victoria LandTaylor Glacier
Type
Earth Sciences
Information
Antarctic Science , Volume 29 , Issue 4 , August 2017 , pp. 343 - 355
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Copyright
© Antarctic Science Ltd 2017 

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References

Allibone, A.H., Cox, S.C. & Smillie, R.W. 1993. Granitoids of the Dry Valleys area, southern Victoria Land: geochemistry and evolution along the early Paleozoic Antarctic Craton margin. New Zealand Journal of Geology and Geophysics, 36, 299–316.Google Scholar
Baker, J., Peate, D., Waight, T. & Meyzen, C. 2004. Pb isotopic analysis of standards and samples using a 207Pb-204Pb double spike and thallium to correct for mass bias with a double-focusing MC-ICP-MS. Chemical Geology, 211, 275–303.Google Scholar
Barrett, P.J. 1981. History of the Ross Sea region during the deposition of Beacon Supergroup 400–180 million years ago. Journal of the Royal Society of New Zealand, 11, 447–458.Google Scholar
Bockheim, J.G. 2007. Soil processes and development rates in the Quartermain Mountains, upper Taylor Glacier region, Antarctica. Geografiska Annaler - Physical Geography, 89A, 153–165.Google Scholar
Brook, E.J., Kurtz, M.D., Ackert, R.P., Denton, G.H., Brown, E.T., Raisbeck, G.M. & Yiou, F. 1993. Chronology of Taylor Glacier advances in Arena Valley, Antarctica, using in situ cosmic 3He and 10Be. Quaternary Research, 39, 11–23.CrossRefGoogle Scholar
Claridge, C.G.C. & Campbell, I.B. 2002. Evidence for early invasions of the McMurdo Sound region by Ross Sea ice. Royal Society of New Zealand Bulletin, 35, 373–379.Google Scholar
Connelly, J.N. & Thrane, K. 2005. Rapid determination of Pb isotopes to define Precambrian allochthonous domains: an example from West Greenland. Geology, 33, 953–956.Google Scholar
Cox, S.C., Parkinson, D.L., Allibone, A.H. & Cooper, A.F. 2000. Isotope character of Cambro-Ordovician plutonism, southern Victoria Land, Antarctica. New Zealand Journal of Geology and Geophysics, 43, 501–520.CrossRefGoogle Scholar
Cox, S.C., Turnbull, I.M., Isaac, M.J., Townsend, D. & Smith, L.B. 2012. Geology of the southern Victoria Land, Antarctica. 1:250 000 geological map 22. Lower Hutt: GNS Science, 1 sheet.Google Scholar
Denton, G.H. & Hughes, T.J. 2002. Reconstructing the Antarctic ice sheet at the Last Glacial Maximum. Quaternary Science Reviews, 21, 193–202.Google Scholar
Gasson, E., DeConto, R.M., Pollard, D. & Levy, R.H. 2016. Dynamic Antarctic ice sheet during the early to mid-Miocene. Proceedings of the National Academy of Sciences of the United States of America, 113, 3459–3464.CrossRefGoogle ScholarPubMed
Higgins, S.M., Hendy, C.H. & Denton, G.H. 2000. Geochronology of Bonny Drift, Taylor Valley, Antarctica: evidence for interglacial expansions of Taylor Glacier. Geografiska Annaler - Physical Geography, 82A, 391–409.Google Scholar
Hindmarsh, R.C.A., van der Wateren, F.M. & Verbers, A.L.L.M. 1998. Sublimation of ice through sediment as a constraint on ice age in Beacon Valley, East Antarctica. Geografiska Annaler - Physical Geography, 80A, 209–219.Google Scholar
Huybrechts, P. 1993. Glaciological modelling of the late Cenozoic East Antarctic Ice Sheet: stability or dynamism? Geografiska Annaler - Physical Geography, 75A, 221–238.Google Scholar
Ivy-Ochs, S., Schluchter, C., Kubik, P.W., Dittrich-Hannen, B. & Beer, J. 1995. Minimum 10Be exposure ages of early Pliocene for the Table Mountain plateau and Sirius Group at Mount Fleming, Dry Valleys, Antarctica. Geology, 23, 1007–1010.Google Scholar
Kowalewski, D.E., Marchant, D.R., Levy, J.S. & Head, J.W. 2006. Quantifying low rates of summertime sublimation for buried glacier ice in Beacon Valley, Antarctica. Antarctic Science, 18, 421–428.Google Scholar
Lewis, A.R. 2000. The paleoclimate significance of massive buried glacial ice in Beacon Valley, Antarctica. MSc thesis, University of Maine, 282 pp. [Unpublished].Google Scholar
Lewis, A.R. & Ashworth, A.C. 2015. An early to middle Miocene record of ice-sheet and landscape evolution from the Friis Hills, Antarctica. Geological Society of America Bulletin, 128, 719–738.CrossRefGoogle Scholar
Lewis, A.R., Marchant, D.R., Ashworth, A.C., Hedena, L., Hemming, S.R., Johnson, J.V., Leng, M.J., Machlus, M.L., Newton, A.E., Raine, J.I., Willenbring, J.K., Williams, M. & Wolfe, A.P. 2008. Mid-Miocene cooling and the extinction of tundra in Continental Antarctica. Proceedings of the National Academy of Sciences of the United States of America, 105, 10 676–10 680.CrossRefGoogle ScholarPubMed
Linkletter, G., Bockheim, J. & Ugolini, F.C. 1973. Soils and glacial deposits in the Beacon Valley, southern Victoria Land, Antarctica. New Zealand Journal of Geology and Geophysics, 16, 90–108.CrossRefGoogle Scholar
Liu, L., Sletten, R.S., Hagedorn, B., Hallet, B., McKay, C.P. & Stone, J.O. 2015. An enhanced model of the contemporary and long-term (200 ka) sublimation of the massive subsurface ice in Beacon Valley, Antarctica. Journal of Geophysical Research - Earth Surface, 120, 1596–1610.Google Scholar
Marchant, D.R., Denton, G.H. & Swisher, C.C. 1993. Miocene-Pliocene-Pleistocene Glacial history of Arena Valley, Quartermain Mountains, Antarctica. Geografiska Annaler, 75A, 269–302.Google Scholar
Marchant, D.R., Lewis, A.R., Phillips, W.M., Moore, E.J., Souchez, R.A., Denton, G.H., Sugden, D.E., Potter, N. & Landis, G.P. 2002. Formation of patterned ground and sublimination till over Miocene glacier ice in Beacon Valley, southern Victoria Land, Antarctica. Geological Society of America Bulletin, 114, 718–730.2.0.CO;2>CrossRefGoogle Scholar
McElroy, C.T. & Rose, G. 1987. Geology of the Beacon Heights area southern Victoria Land, Antarctica. Wellington: New Zealand Geological Survey, Department of Scientific and Industrial Research, 47 pp.Google Scholar
McKay, R., Browne, G., Carter, L., Cowan, E., Dunbar, G., Krissek, L., Naish, T., Powell, R., Reed, J., Talarico, F. & Wilch, T. 2009. The stratigraphic signature of the late Cenozoic Antarctic ice sheets in the Ross Embayment. Geological Society of America Bulletin, 121, 1537–1561.CrossRefGoogle Scholar
McKelvey, B.C. & Webb, P.N. 1959. Geological investigations in southern Victoria land, Antarctica. Part 2: geology of the upper Taylor Glacier region. New Zealand Journal of Geology and Geophysics, 2, 718–728.Google Scholar
McKelvey, B.C., Webb, P.N. & Kohn, B.P. 1977. Stratigraphy of the Taylor and lower Victoria groups (Beacon Supergroup) between the Mackay Glacier and Boomerang Range, Antarctica. New Zealand Journal of Geology and Geophysics, 20, 813–863.Google Scholar
Ng, F., Hallet, B., Sletten, R.S. & Stone, J.O. 2005. Fast growing till over ancient ice in Beacon Valley, Antarctica. Geology, 33, 121–124.Google Scholar
Potter, JR N,. & Wilson, S.C. 1983. Glacial geology and soils in Beacon Valley. Antarctic Journal of the United States, 18(5), 100–103.Google Scholar
Schafer, J.M., Baur, H., Denton, G.H., Ivy-Ochs, S., Marchant, D.R., Schlucher, C. & Wieler, R. 2000. The oldest ice on Earth in Beacon Valley, Antarctica: new evidence from surface exposure dating. Earth and Planetary Science Letters, 179, 91–99.Google Scholar
Staiger, J.W., Marchant, D.M., Schaefer, J.M., Oberholzer, P., Johnson, J.V., Lewis, A.R. & Swanger, K.M. 2006. Plio-Pleistocene history of Ferrar Glacier, Antarctica: implications for climate and ice sheet stability. Earth and Planetary Science Letters, 243, 489–503.Google Scholar
Sugden, D.E., Marchant, D.R., Potter, N., Souchez, R.A., Denton, G.H., Swisher, C.C. & Tison, J.L. 1995. Preservation of Miocene glacier ice in East Antarctica. Nature, 376, 412–414.Google Scholar
Swanger, K.M., Marchant, D.R., Schaefer, J.M., Winckler, G. & Head, J.W. 2011. Elevated East Antarctic outlet glaciers during warmer-than-present climates in southern Victoria Land. Global and Planetary Change, 79, 61–72.Google Scholar
Webb, P.N. 1974. Derivation of the older moraines in Beacon Valley, Antarctica: comment. New Zealand Journal of Geology and Geophysics, 17, 723–728.Google Scholar
Wilch, T.I., Denton, G.H., Lux, D.R. & McIntosh, W.C. 1993. Limited Pliocene glacier extent and surface uplift in middle Taylor Valley, Antarctica. Geografiska Annaler - Physical Geography, 75A, 331–351.Google Scholar
Williams, G. 2006. Tracing the source of granite clasts in the Beacon Valley, Antarctica, using lead isotopes as a geochemical fingerprint. BSc thesis, Victoria University Wellington, 80 pp [Unpublished].Google Scholar
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