The Marie Byrd Land volcanic province is largely defined by 18 large (up to ~1,800 km3) alkaline shield volcanoes, each surmounted by a summit section of varied felsic rocks dominated by trachytic flows. They are distributed over a 500 × 800-km block-faulted dome within the West Antarctic rift. The basement contact of volcanic sections is ~500 masl at one site and 3,000 mbsl at another, 70 km away, which illustrates the scale of block faulting but complicates an understanding of volcanic structure. Furthermore, the continental ice sheet buries 16 volcanoes to progressively greater heights inland. However, five are sufficiently exposed to allow meaningful comparisons with alkaline oceanic island volcanoes; these comparisons are used as a guide to estimate the structure of Marie Byrd Land volcanoes. The type example for this study is Mt. Murphy, the most completely exposed volcano. It consists of a 1,400-m section of alkaline basalt overlain by trachyte and benmoreite flows that make up ~7–13 % of the volcano volume. In gross structure and composition, Mt. Murphy is similar to Gran Canaria volcano, Canary Islands, but the percent of felsic rock may be three times that of Gran Canaria, if the estimate is approximately correct. Departures from the oceanic island example are believed to represent the imprint of the Marie Byrd Land lithosphere and tectonic environment on volcano evolution. These include a lack of order in the sequence of felsic rock types, lack of progression toward more silica undersaturated compositions with time, absence of a highly undersaturated mafic resurgent stage, and perhaps, a relatively large volume of felsic rock.
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Andrews JT, LeMasurier WE (1973) Rates of Quaternary glacial erosion and corrie formation, Marie Byrd Land, Antarctica. Geology 1:75–80
Barberi F, Santacroce R, Varet J (1974) Silicic peralkaline volcanic rocks of the Afar Depression (Ethiopia). Bull Volcanol 38:755–790
Bentley CR, Clough JW (1972) Antarctic subglacial structure from seismic refraction measurements. In: Adie RJ (ed) Antarctic geology and geophysics. Universitetsforlaget, Oslo, pp 683–691
Drewry DJ (1983) Antarctica: glaciological and geophysical folio: Scott Polar Research Institute, University of Cambridge, 9 sheets
Hart SR, Blusztajn J, LeMasurier WE, Rex DC (1997) Hobbs Coast Cenozoic volcanism: implications for the West Antarctic rift system. Chem Geol 139:223–248
Hole MJ, LeMasurier WE (1994) Tectonic controls on the geochemical composition of Cenozoic, mafic alkaline volcanic rocks from West Antarctica. Contr Miner Petrol 117:187–202
Krastel S, Schmincke H-U (2002) Crustal structure of northern Gran Canaria, Canary Islands, deduced from active seismic tomography. J Volcanol Geotherm Res 115:153–177
LeMasurier WE (1990a) Marie Byrd Land summary. In: LeMasurier WE, Thomson JW (eds) Volcanoes of the Antarctic Plate and southern oceans, vol 48, AGU. Antarct Res Ser., pp 147–163
LeMasurier WE (1990b) Late Cenozoic volcanism on the Antarctic Plate: an overview. In: LeMasurier WE, Thomson JW (eds) Volcanoes of the Antarctic Plate and southern oceans, vol 48, AGU Antarct Res Ser., pp 1–17
LeMasurier WE (2008) Neogene extension and basin deepening in the West Antarctic rift inferred from comparisons with the East African rift and other analogs. Geology 36:247–250. doi:10.1130/G24363A.1
LeMasurier WE, Landis CA (1996) Mantle-plume activity recorded by low-relief erosion surfaces in West Antarctica and New Zealand. Geol Soc Am Bull 108:1450–1466
LeMasurier WE, Rex DC (1989) Evolution of linear volcanic ranges in Marie Byrd Land, West Antarctica. J Geophys Res 94:7223–7236
LeMasurier WE, Thomson JW, eds (1990) Volcanoes of the Antarctic Plate and southern oceans. AGU. Antarct Res Ser 48, 487 p
LeMasurier WE, Harwood DM, Rex DC (1994) Geology of Mount Murphy volcano: an 8-m.y. history of interaction between a rift volcano and the West Antarctic ice sheet. Geol Soc Am Bull 106:265–280
LeMasurier WE, Futa K, Hole MJ, Kawachi Y (2003) Polybaric evolution of phonolite, trachyte, and rhyolite volcanoes in eastern Marie Byrd Land, Antarctica: controls on peralkalinity and silica saturation. Int Geol Rev 45:1055–1099
LeMasurier WE, Choi SH, Kawachi Y, Mukasa SB, Rogers NW (2011) Evolution of pantellerite-trachyte-phonolite volcanoes by fractional crystallization of basanite magma in a continental rift setting, Marie Byrd Land, Antarctica. Contr Miner Petrol 162:1175–1199. doi:10.1007/s00410-011-0646-z
Lénat J-F, Bachèlery P, Merle O (2012) Anatomy of Piton de la Fournaise volcano (La Réunion, Indian Ocean). Bull Volcanol 74:1945–1961. doi:10.1007/s00445-012-0640-y
Lipman PW, Dungan MA, Brown LD, Deino A (1996) Recurrent eruption and subsidence at the Platoro caldera complex, southeastern San Juan volcanic field, Colorado: new tales from old tuffs. Geol Soc Am Bull 108:1039–1055
McDougall I, Schmincke H-U (1976) Geochronology of Gran Canaria, Canary Islands: age of shield building volcanism and other magmatic phases. Bull Volcanol 40–1:57–77
Ritzwoller MH, Shapiro N, Levshin AL, Leahy GM (2001) Crustal and upper mantle structure beneath Antarctica and surrounding oceans. J Geophys Res 106:30,645–30,670
Roest WR, Dañobeitia JJ, Verhoef J, Collette BJ (1992) Magnetic anomalies in the Canary Basin and the Mesozoic evolution of the Central North Atlantic. Mar Geophys Res 14:1–24
Rogers NW (2006) Basaltic magmatism and the geodynamics of the East African Rift system. In: Yirgu G, Ebinger CJ, Maguire PKH (eds) The Afar Volcanic Province within the East African Rift system. Geol Soc Lond Spec Publ 259. Geological Society London, Bath, pp 77–93
Schmincke H-U, Sumita M (2010) Geological evolution of the Canary Islands: a young volcanic archipelago adjacent to the old African continent. Görres-Verlag, Koblenz, n.d., 200p
Sinton JM (1990) Waianae, Oahu, Hawaii. In: Woods CA, Kienle J (eds) Volcanoes of North America: United States and Canada. Cambridge University Press, Cambridge, pp 323–324
Smellie JL (2001) Lithofacies architecture and construction of volcanoes constructed in englacial lakes: Icefall Nunatak, Mount Murphy, eastern Marie Byrd Land, Antarctica. In: White JDL, Riggs N (eds) Lacustrine volcaniclastic sedimentation, vol 30, Spec Publs Int Assoc Sedimentol., pp 9–34
Troll VR, Schmincke H-U (2002) Magma mixing and crustal recycling recorded in ternary feldspar from compositionally zoned peralkaline ignimbrite “A”, Gran Canaria, Canary Islands. J Petrol 43:243–270
van den Bogaard P, Schmincke H-U (1998) Chronostratigraphy of Gran Canaria. In: Weaver PPE, Schmincke H-U, Firth JV, Duffield W (eds) Proceedings of the Ocean Drilling Program, vol 157, Scientific Results., pp 127–140
Vezzoli L, Acocella V (2009) Easter Island, SE Pacific: an end-member type of hotspot volcanism. Geol Soc Am Bull 121:869–886. doi:10.1130/B26470.1
Viñuela JM (2007) The Canary Islands hot spot. www.MantlePlumes.org
White JC, Parker DF, Ren (2009) The origin of trachyte and pantellerite from Pantelleria, Italy: insights from major element, trace element, and thermodynamic modeling. J Volcan Geotherm Res 179:33–55
Wilch TI, McIntosh (2002) Lithofacies analysis and 40Ar/39Ar geochronology of ice–volcano interactions at Mt. Murphy and the Crary Mountains, Marie Byrd Land, Antarctica. In: Smellie JL, Chapman MG (eds) Volcano–ice interaction on Earth and Mars. Geological Society Special Publication 202, London, pp 237–253
Wilch TI, McIntosh WC, Dunbar NW (1999) Late Quaternary volcanic activity in Marie Byrd Land: potential 40Ar/39Ar-dated time horizons in West Antarctic ice and marine cores. Geol Soc Am Bull 111:1563–1580
Wilch TI, McCuddy SM, McIntosh WC (2000) Middle and late Wisconsinan expansions of the West Antarctic ice sheet at Mt. Takahe volcano (abs). In: Volcano/ice interaction on Earth and Mars abstract volume. August 13–15, 2000. University of Iceland, Reykjavik, pp
Winberry JP, Anandakrishnan S (2004) Crustal structure of the West Antarctic rift system and Marie Byrd Land hotspot. Geology 32:977–980. doi:10.1130/G20768.1
I am pleased to acknowledge the support of the National Science Foundation through grant # 536526, administered by the Office of Polar Programs. John Andrews and Cristina de Ignacio San José provided much appreciated critiques of an early draft of the manuscript. Formal reviews by Jim Cole, Valentin Troll, and two anonymous reviewers provided helpful and authoritative critiques of Gran Canaria, Mt. Murphy, and other sections, for which I am very grateful. I am much obliged to Associate Editor Ben van Wyk de Vries for well-balanced reviews and thoughtful editorial oversight that greatly improved the manuscript.
Editorial responsibility: B. van Wyk de Vries
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LeMasurier, W. Shield volcanoes of Marie Byrd Land, West Antarctic rift: oceanic island similarities, continental signature, and tectonic controls. Bull Volcanol 75, 726 (2013). https://doi.org/10.1007/s00445-013-0726-1
- Shield volcanoes
- Alkaline oceanic islands
- Evolutionary stages
- Order of eruption