Early Miocene Antarctic glacial history: new insights from heavy mineral analysis from ANDRILL AND-2A drill core sediments

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• 作者：Francesco Iacoviello ; Giovanna Giorgetti…
• 关键词：Antarctica ; ANDRILL ; Early Miocene ; Heavy mineral analysis ; Ice sheet ; Ross Sea
• 刊名：International Journal of Earth Sciences
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：104
• 期：3
• 页码：853-872
• 全文大小：6,825 KB
• 参考文献：1. Acton, G, Crampton, J, Vincenzo, G, Fielding, CR, Florindo, F, Hannah, M, Harwood, D, Ishman, S, Johnson, K, Jovane, L, Levy, R, Lum, B, Marcano, MC, Mukasa, S, Ohneiser, C, Olney, M, Riesselman, C, Sagnotti, L, Stefano, C, Strada, E, Taviani, M, Tuzzi, E, Verosub, KL, Wilson, GS, Zattin, M (2008) Preliminary integrated chronostratigraphy of the AND-2A core, ANDRILL Southern McMurdo Sound project, Antarctica. Terra Antarct 15: pp. 211-220
  2. ANDRILL SMS Science Team (2010) An integrated age model for the ANDRILL-2A drill core. In: Kontar K, Harwood DM, Florindo F, and Fischbein S (eds) ANDRILL Southern McMurdo Sound project science integration workshop—program and abstracts ANDRILL Contribution # 16, ANDRILL Science Management Office, University of Nebraska, Lincoln, NE, p 113
  3. Armienti, P, Messiga, B, Vannucci, R (1998) Sand provenance from major and trace element analyses of bulk rock and sand grains. Terra Antarct 5: pp. 589-599
  4. Barrett P (1979) Proposed drilling in McMurdo Sound: Memoir of the National Institute of Polar Research. Special Issue 13:231-39
  5. Barrett, P Cenozoic climate and sea level history from glacimarine strata off the Victoria Land coast, Cape Roberts Project, Antarctica. In: Hambrey, K, Christoffersen, P, Glasser, N, Hubbart, B eds. (2007) Glacial processes and products. Blackwell, New York, pp. 259-287
  6. Barrett, PJ, Sarti, M, Sherwood, W (2000) Studies from the Cape Roberts Project, Ross Sea, Antarctica, Initial Reports on CRP-3. Terra Antarct 7: pp. 209
  7. Bédard, JHJ, Marsh, DB, Hersum, GT, Naslund, HR, Mukasa, BS (2007) Large-scale mechanical redistribution of orthopyroxene and plagioclase in the Basement Sill, Ferrar Dolerites, McMurdo Dry Valleys, Antarctica: petrological, mineral-chemical and field evidence for channelized movement of crystals and melt. J Petrol 48: pp. 2289-2326 CrossRef
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  Initial report on CRP-1, Cape Roberts Project, Antarctica. Terra Antarct 5: pp. 187
  9. Cook, YA, Craw, D (2002) Neoproterozoic structural slices in the Ross Orogen, Skelton Glacier area, South Victoria Land, Antarctica. NZ J Geol Geophys 45: pp. 133-143 CrossRef
  10. Cooper, A, Adam, L, Coulter, R, Eby, G, McIntosh, W (2007) Geology, geochronology and geochemistry of a basanitic volcano, White Island, Ross Sea, Antarctica. J Volcanol Geotherm Res 165: pp. 189-216 CrossRef
  11. Cramer, BS, Miller, KG, Barrett, PJ, Wright, JD (2011) Late Cretaceous–Neogene trends in deep ocean temperature and continental ice volume: reconciling records of benthic foraminiferal geochemistry (δ18O and Mg/Ca) with sea level history. J Geophys Res 116: pp. C12023 CrossRef
  12. Damiani, D, Giorgetti, G (2008) Provenance of glacial–marine sediments under the McMurdo/Ross Ice Shelf (Windless Bight, Antarctica): heavy minerals and geochemical data. Palaeogeogr Palaeoclimatol Palaeoecol 260: pp. 262-283 CrossRef
  13. Davey FJ, Barrett PJ, Cita MB, van der Meer JJM, Tessensohn F, Thomson MRA, Webb PN, Woolf KJ (2001) Drilling for Antarctic Cenozoic climate and tectonic history at Cape Roberts, Southwestern Ross Sea. Eos Trans Am Geophys Union 82(48):585, 589-90. doi:10.1029/01EO00339
  14. Denton GH, Sugden DE, Marchant DR, Hal BL, Wilch TI (1993) East Antarctic Ice Sheet sensitivity to Pliocene climatic change from a Dry Valleys perspective. In: A special volume arising from the Vega symposium: the case for a stable east Antarctic ice sheet. Geografiska Annaler Series A, Physical Geography 75(4):155-04
  15. Roberto, A, Carlo, P, Rocchi, S, Bracciali, L, Vincenzo, G, Rocchi, S, Panter, K (2012) Early Miocene volcanic activity and paleoenvironment conditions of the AND-2A core (southern McMurdo Sound, Antarctica). Geosphere 8: pp. 1342 CrossRef
  16. Roberto, A, Giorgetti, G, Iacoviello, F, Pompilio, M (2013) Alteration of volcanic deposits in the ANDRILL AND-1B core: influence
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  Geophysics and Geodesy
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1437-3262

文摘

The present study deals with heavy mineral analysis of late Early Miocene marine sediments recovered in the McMurdo Sound region (Ross Sea, Antarctica) during the ANDRILL—SMS Project in 2007. The main objective is to investigate how heavy mineral assemblages reflect different source rocks and hence different provenance areas. These data contribute to a better understanding of East Antarctica ice dynamics in the Ross Sea sector during the Early Miocene (17.6-0.2?Ma), a time of long-term global warming and sea level rise. The AND-2A drill core recovered several stratigraphic intervals that span from Early Miocene to Pleistocene and it collected a variety of terrigenous lithologies. The heavy mineral assemblages of the lower 650-m-thick sedimentary succession were analyzed through SEM observations and SEM–EDS microanalyses on heavy mineral grains. The heavy mineral analysis shows that the sediments are a mix of detritus dominated by McMurdo Volcanic Group sources most likely located in the present-day Mount Morning area (Proto-Mount Morning) with minor contribution from Transantarctic Mountains source rocks located west of the drill site. The heavy mineral assemblages in Interval 1 indicate that between 20.2 and 20.1?Ma, the grounding line of the ice sheet advanced to a position near the present-day Mount Morning volcanic center. During deposition of Interval 2 (20.1-9.3?Ma), the ice sheet most likely experienced a dynamic behavior with interval of ice advance alternating with periods of ice retreat, while Interval 3 (19.3-8.7?Ma) records further retreat to open water conditions. A dynamic behavior is noted in Interval 4 (18.7-7.6?Ma) with a decreasing contribution of materials derived from the basalts of the Mount Morning volcanic center located to the south of the drill site and a consequent increasing contribution of materials derived from the Transantarctic Mountains to the west of the drill site.