| | Journal (article/letter/editorial) | in pyroxenite xenoliths, Mount Sidley volcano, Marie Byrd Land, West Antarctica R. H. GRAPES1,*, R. J....in phonolite from the Mount Sidley composite volcano, Marie Byrd Land, Antarctica, as a localized breakdown...than rhönite occurring as microphenocrysts in basanite. Comparison with experimentally determined rhönite...product after Ti-amphibole indicates that the Mount Sidley rhönite (and associated minerals) formed between...: rhonöte, pyroxenite xenoliths, Mount Sidney, volcano, Antarctica, kaersutite. Introduction RHÖNITE | | | Journal (article/letter/editorial) | Phonolite–Trachyte Succession at Mount Sidley, Marie Byrd Land, Antarctica KURT S. PANTER1∗, PHILIP R. KYLE1...the Late Pliocene (5·7 to 4·2 Ma) Mt Sidley volcano, Marie Byrd Land, is examined using major and trace...caldera exposes lavas and tephras, deep within Mt Sidley, and allows its magmatic evolution to be elucidated...distinguished: (a) a strongly silica-undersaturated basanite to phonolite series; (b) a more silica-saturated...compositions in both series fall within a narrow range of 87Sr/86Sri (0·7028– 0·7032), 143Nd/144Ndi (0·51285–0·51290) | | Wysoczanski, R.J., Gamble, J.A., Kyle, P.R., Thirlwall, M.F. (1995) The petrology of lower crustal xenoliths from the Executive Committee Range, Marie Byrd Land Volcanic Province, West Antarctica. Lithos, 36 (3) 185-201 doi:10.1016/0024-4937(95)00017-8 | Journal (article/letter/editorial) | xenoliths from the Executive Committee Range, Marie Byrd Land Volcanic Province, West Antarctica R.J. Wysoczanski...magmas from the late-Cenozoic Marie Byrd Land Volcanic Province, West Antarctica, have entrained lithospheric...collected from the Executive Committee Range (Mounts Hampton in the north and Mount Sidley in the south) in...in central Marie Byrd Land, and their petrological characteristics together with preliminary geochemicai...xenoliths from Mounts Hampton and Sidley differ (e.g. Mount Sidley xenoliths have Mg# 32-80, are relatively | | Panter, Kurt S, Hart, Stanley R, Kyle, Philip, Blusztanjn, Jerzy, Wilch, Thom (2000) Geochemistry of Late Cenozoic basalts from the Crary Mountains: characterization of mantle sources in Marie Byrd Land, Antarctica. Chemical Geology, 165 (3) 215-241 doi:10.1016/s0009-2541(99)00171-0 | Journal (article/letter/editorial) | characterization of mantle sources in Marie Byrd Land, Antarctica Kurt S. Panter a,) , Stanley R. Hart...Department of Natural and EnÕironmental Sciences, Western State College, Gunnison, CO 81231, USA Department...basalts from the Crary Mountains, eastern Marie Byrd Land, Antarctica have low 87Srr86 Sr Ž0.70267–0.70283...together with Hobbs Coast basalts from western Marie Byrd Land have the strongest HIMU signature Ž206...Tasmania and New Zealand which were adjacent to the Antarctica coast prior to the mid-Cretaceous fragmentation | | LeMasurier, Wesley E., Futa, Kiyoto, Hole, Malcolm, Kawachi, Yosuke (2003) Polybaric Evolution of Phonolite, Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity and Silica Saturation. International Geology Review, 45 (12) 1055-1099 doi:10.2747/0020-6814.45.12.1055 | Journal (article/letter/editorial) | Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity and Silica...Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity and Silica...Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity and Silica...Otago, Dunedin, New Zealand2 Abstract In the Marie Byrd Land volcanic province, peralkaline and metaluminous...contamination. We focus on volcanoes of the Executive Committee Range and Mount Murphy, where we find good representation | | LeMasurier, Wesley E., Choi, Sung Hi, Kawachi, Y., Mukasa, Samuel B., Rogers, N. W. (2011) Evolution of pantellerite-trachyte-phonolite volcanoes by fractional crystallization of basanite magma in a continental rift setting, Marie Byrd Land, Antarctica. Contributions to Mineralogy and Petrology, 162 (6) 1175-1199 doi:10.1007/s00410-011-0646-z | Journal (article/letter/editorial) | crystallization of basanite magma in a continental rift setting, Marie Byrd Land, Antarctica Wesley E. LeMasurier...2011 Ó Springer-Verlag 2011 Abstract The Marie Byrd Land province includes 18 large (up to 1,800 km3)...structure consists of a basal 1,000–5,000 m of basanite surmounted by trachyte and subordinate intermediate...isotopic equilibrium throughout the basalt-felsic range, and the results of modeling, all exclude significant...pantellerites Communicated by T. L. Grove. from basanite, the long interval of fractionation at the base | | | Journal (article/letter/editorial) | Cenozoic, alkalic volcanic lineages at Mount Morning, West Antarctica and their entrained lithospheric mantle...identified at Mount Morning, a Cenozoic to recent, eruptive centre in the Ross Sea, West Antarctica, which is...trace element and isotope variation (Sr–Nd–Pb) in Mount Morning basaltic rocks and entrained xenoliths suggests...volcanic rocks in Antarctica (Victoria Land – including Mount Morning – and Marie Byrd Land), Zealandia and...measured in some SCLM xenoliths and volcanic rocks at Mount Morning, and in volcanic rocks across the DAMP, | | | Report (chapter) | evolution of hydrovolcanic deltas in Marie Byrd Land, Antarctica W. E. L E M A S U R I E R University...wlemasur@carbon.cudenver.edu) Abstract: The Marie Byrd Land volcanic province is a late Cenozoic alkaline...basalttrachyte volcanic field on the Pacific coast of West Antarctica. Most of these volcanoes are partially buried...province-wide lack of pillow lava cores in Marie Byrd Land englacial volcanoes, and factors that may be...ice or water level. Hydrovolcanic phenomena in Antarctica have been compared to this model since the earliest | | Sharygin, V.V., Kóthay, K., Szabó, Cs., Timina, T.Ju., Török, K., Vapnik, Ye., Kuzmin, D.V. (2011) Rhönite in alkali basalts: silicate melt inclusions in olivine phenocrysts. Russian Geology and Geophysics, 52 (11) 1334-1352 doi:10.1016/j.rgg.2011.10.006 | Journal (article/letter/editorial) | kbar. Rhönite crystallized in a narrow temperature range (1180–1260 °C) and P < 0.5 kbar. The petrography...Olsson, 1983 Iceland plume Prestvik et al., 1999 Western Romania Downes et al., 1995; Seghedi et al., 1995...Tóth, 2003 Poland Ladenberger et al., 2006 Antarctica Kyle and Price, 1975; Wysoczanski, 1993 Cape...1964 Eifel, Germany Shaw and Klügel, 2002 Antarctica Gamble and Kyle; 1987; Grapes et al., 2003 ...(BBHVF) is situated in the central Pannonian basin (Western Hungary), whereas the Nógrád-Gömör Volcanic Field | | | Journal (article/letter/editorial) | constant and probably close to unity for a wide range of peralkaline and similar depolymerized melts....depolymerized melt, DHf ⬎ DZr. Typical values of DHf/DZr range from 1.5 to 2.5 for clinopyroxene, amphibole, and...JEOL JXA 8600 electron microprobe (University of Western Ontario, London, Canada) with a 20-kV accelerating...water-saturated conditions, zircon solubilities range from nearly 3 wt% ZrO2 for strongly peralkaline...peralkaline melts DHf/DZr is close to unity over a wide range of melt compositions, particularly at high temperatures | | | Journal (article/letter/editorial) | 96Al2.04)6O20 in limburgite. Mg/(Mg þ Fe2þ) ratios range between 0.40 and 0.49, and the Fe2þ-rich rhönite.... 0.46 (Kunzmann, 1989). These rocks comprise basanite–syenite (Soellner, 1907; Cameron et al., 1970;...by Soellner (1907); and a limburgite (nepheline basanite) (No. L4; XMg ¼ 0.64; ne/(ne þ ab þ or) ¼ 0.61)...compositions indicating that there is an almost continuous range of Fe2þ $ Mg substitution with Mg/(Mg þ Fe2þ) ranging...Fig. 5. Solidus–liquidus relations of nepheline basanite to show stability field of rhönite (grey-shaded | | | Journal (article/letter/editorial) | Aris collectively exhibit a narrow compositional range and represent a single magma system of highly evolved...approaching 1 km3 ) are widespread throughout western southern Africa from Windhoek (in Namibia) southwards...felsic trachytes and phonolites. Available ages range from 77 to 32 Ma but relatively few occurrences...17° 10.755′ E — Fig. 1), the highest peak in the range just S of Windhoek (see Fig 22.11 in Miller, 2008...mm, with lesser anhedral olivine of similar size range. Many of the augite phenocrysts have cores which | | | Journal (article/letter/editorial) | from alkali basalt and alkali olivine basalt to basanite and nephelinite to nepheline melilitite. This...3B. Meaning of letters for Honolulu Series: B = basanite; A = alkali basalt; M = nephelinite-melilitite;...e; N = nephelinite; for Koloa Series: Kb = basanite; Ka = alkali basalt, Km = melilitite; Kn = nephelinite...value of Ba/Ce. The Bransfield Strait IAV in Antarctica plots closest to OIV, and is responsible for...Britain and Mariana Islands and Bransfield Strait, Antarctica: see Fig. BRUCE R. DOE Downloaded by [Temple | | Eskandari, Amir, Deevsalar, Reza, De Rosa, Rosanna, Shinjo, Ryuichi, Donato, Paola, Neill, Iain (2020) Geochemical and isotopic constraints on the evolution of magma plumbing system at Damavand Volcano, N Iran. Lithos, 354. 105274 doi:10.1016/j.lithos.2019.105274 | Journal (article/letter/editorial) | under-saturated to weakly-saturated mafic lavas (Tephrite-Basanite-Alkali olivine basalt), and large volumes of saturated...(stage-4). The results affirm the advantages of using a range of compositional and textural records in modeling...to 19 weakly-saturated mafic lavas (Tephrite-Basanite-Alkali olivine basalt), and large volumes of saturated...The results affirm the 43 advantages of using a range of compositional and textural records in modeling...crustal thickness beneath the central part of Alborz range has been estimated from 46-58 km, 92 comprising | | Brenna, Marco, Pontesilli, Alessio, Mollo, Silvio, Masotta, Matteo, Cronin, Shane J., Smith, Ian E.M., Moufti, Mohammed Rashad Hassan, Scarlato, Piergiorgio (2019) Intra-eruptive trachyte-phonolite transition: Natural evidence and experimental constraints on the role of crystal mushes. American Mineralogist, 104 (12) 1750-1764 doi:10.2138/am-2019-6963 | Journal (article/letter/editorial) | (<200 MPa) reservoirs. In the Marie Byrd Land volcanic province (Antarctica), LeMasurier et al. 1750 Downloaded...of the Al Shaatha eruption along a wadi on the western side of the volcano. The crater rim (dashed) is...is its distal equivalent. The eruptive products range from poorly vesicular (<25%) and crystalline (diktytaxitic...clinopyroxene (Fig. 7b). Overall, in the temperature range 850–1000 °C, the effect of H2O in decreasing the...benmoreitic and trachytic magmas. Despite the broad range of P-T-H2O-CO2 conditions explored by the crystallization | | | Journal (article/letter/editorial) | Elsevier B.V. All rights reserved. 1. Introduction Mount Suswa is a large (>700 km 2) trachytic shield volcano...west Africa (Fitton, 1987); the Marie Byrd Land province, west Antarctica rift system (LeMasurier et al...Syn‐caldera Phreatomagmatic Group Ring Feeder Group Western Pumice Group Enkorika Fissure Group Early Post‐caldera...(RFG, S3), including trachytic lava flows; (c) the Western Pumice Group (WPG, S4) consisting of pumice-lapilli...(Omenda, 1997). Fig. 2. Simplified geologic map of Mount Suswa following Skilling (1988, 1993). J.C. White | | | Journal (article/letter/editorial) | The oxygen fugacity gradually changed during basanite crystallization from oxidizing (NNO) to more reducing...and groundmass) showed that the evolution of a basanite melt during its crystallization included mainly...Geochemical evidence suggests that the primary basanite melt was derived from a mantle source affected...the basanites and physicochemical conditions of basanite crystallization in the Tergesh pipe. GEOTECTONIC...between mountain structures of the Kuznetsk Alatau, western Sayan, and east- ern Sayan. A peculiar zone of | | | Book | 6-15 August 1970, organized by the SCIENTIFIC COMMITTEE ON ANTARCTIC RESEARCH and sponsored by the INTERNATIONAL...earth scientists in the scientific exploration of Antarctica can best be judged from the fact that 7 years...Cape Town, Antarctic earth scientists were able to mount a larger but similarly effective symposium at Oslo...geology and solid earth geophysical literature of Antarctica. It is worth noting that two important differences...result of much work by the Norwegian National Committee under the Chairman, Dr T. Gjelsvik, and the grateful | | | Journal (article/letter/editorial) | 40Ar/39Ar dating of lamprophyre dike swarms in the Western Province of New Zealand PT reveals these dikes...intraplate source. These dikes represent the oldest Western Province representatives of alkaline magmatism...precursor to the Alpine Fault. Dike emplacement in the Western Province coupled to metamorphism of the Alpine...separation occurring RI in the East Africa and West Antarctica rift systems (e.g. Jestin et al., 1994; Behrendt...continental separation of New Zealand, Australia and Antarctica. A voluminous suite of mafic, mainly lamprophyric | | | Journal (article/letter/editorial) | basalt, basanite, gabbro/syenite, nepheline syenite, olivine nephelinite, nepheline basanite, olivine-melilite...in Réunion Island (Havette et al., 1982); (3) basanite in Scania, southern Sweden (Olsson, 1983); (4)...Foster Crater, Antarctica (Gamble and Kyle, 1987); (5) tephrite and nepheline basanite in the Kaiserstuhl...but the contents of åkermanite vary in a broad range (Fig. 4). Åkermanite and gehlenite in melilites...a stronger peak at 525 cm−1 in the 500–600 cm−1 range, which is shifted to lower frequencies, but a smaller | | Matusiak-Małek, Magdalena, Puziewicz, Jacek, Ntaflos, Theodoros, Grégoire, Michel, Kukuła, Anna, Wojtulek, Piotr Marian (2017) Origin and evolution of rare amphibole-bearing mantle peridotites from Wilcza Góra (SW Poland), Central Europe. Lithos, 286. 302-323 doi:10.1016/j.lithos.2017.06.017 | Journal (article/letter/editorial) | ABSTRACT Mantle xenoliths in the 20 Ma Wilcza Góra basanite (Lower Silesia, NE Bohemian Massif) 15 are mostly...temperatures recorded 28 in all groups vary within the range 905-970°C. PT ED 14 AC CE Hornblende-clinopyroxenite...SETTINGS 74 Widespread Cenozoic volcanism in Western and Central Europe (Wilson and Downes, 75 2006)...easternmost Eger (Ohře) Rift 78 is located in western Bohemian Massif (Fig. 1). Volcanic rocks occur...alkaline silicate melt possibly related to the host basanite (Nowak et al., 2010, 2012). 98 Amphibole from | | Jung, S., Mezger, K., Hauff, F., Pack, A., Hoernes, S. (2013) Petrogenesis of rift-related tephrites, phonolites and trachytes (Central European Volcanic Province, Rhön, FRG): Constraints from Sr, Nd, Pb and O isotopes. Chemical Geology, 354. 203-215 doi:10.1016/j.chemgeo.2013.06.026 | Journal (article/letter/editorial) | of the differentiated rocks range from c. 5 to 7‰ which is the same range as observed in the primitive...along either a strongly silica-undersaturated basanite to phonolite lineage or a less silica-undersaturated...highly differentiated rocks because of their small range in age and composition. However, the large distance...occurrences renders this suggestion unlikely. In the western sector of the Rhön phonolites are abundant but...differentiated rocks (i.e., tephrites) occur in the western sector of the Rhön area. Wedepohl et al. (1994) | | | Journal (article/letter/editorial) | Quaternary Kula Volcanic Province is located in western Anatolia, Turkey. This Na-alkaline anorogenic volcanism...to lower pressures. The Kula Volcanic Region in western Anatolia, Turkey represents one of the best preserved...contrast to older surrounding volcanic regions in western Anatolia (Fig. 1) that are dominated by K-enriched... Geological setting The geological history of western Anatolia is dominated by collisional tectonics...1996). This post-Oligocene NE–SW extension within western Anatolia initiated the formation of prominent NW–SE | | Ashwal, Lewis, Torsvik, Trond, Horváth, Péter, Harris, Chris, Webb, Susan, Werner, Stephanie, Corfu, Fernando (2016) A Mantle-derived Origin for Mauritian Trachytes. Journal of Petrology, 57 (9) 1645-1676 doi:10.1093/petrology/egw052 | Journal (article/letter/editorial) | 403 6 015 (n ¼ 13), near the lower end of the range for basalts (eNd ¼ þ370 to þ 575), but the initial...obtained using more alkaline parent liquids including basanite; however, such compositions are not observed anywhere...Bi and In standards to cover the required mass range. ICP-MS determinations were accompanied by control...compositions tend to have higher Ca (Fig. 7). The full range of compositions is represented in both phenocrysts...by quadrilateral components, which show a wide range in Mg# (molar 100Mg/ (Mg þ Fe2þ) from 24 to 82 (average | | VIJAYAKUMAR, K, FROST, C, FROST, B, CHAMBERLAIN, K (2007) The Chimakurti, Errakonda, and Uppalapadu plutons, Eastern Ghats Belt, India: An unusual association of tholeiitic and alkaline magmatism. Lithos, 97 (1) 30-57 doi:10.1016/j.lithos.2006.11.008 | Journal (article/letter/editorial) | Intraplate continental magmatism produces the widest range of magma compositions on Earth. These include mafic–ultramafic...Mesoproterozoic igneous activity in the transition and western charnockite zones. The box outlines the Prakasam...northwest to southeast they include 1) western charnockite zone, 2) western khondalite zone, 3) charnockite–migmatite...Dharwar craton with the Napier complex of East Antarctica. A second major igneous event, associated with...1997). Ferrosyenites of Errakonda occur along the western and southwestern margin of the Chimakurti pluton |
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