 | | Journal (article/letter/editorial) | | Petrogenesis of a PhonoliteāTrachyte Succession at Mount Sidley, Marie Byrd Land, Antarctica KURT S. PANTER1ā,...the Late Pliocene (5Ā·7 to 4Ā·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...alkali basalt to trachyte series. Rock compositions in both series fall within a narrow range of 87Sr/86Sri...alkali basalt is modeled for compositions in the trachyte series. However, many trachytes have variable |  | 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 |  | | 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...product after Ti-amphibole indicates that the Mount Sidley rhoĢnite (and associated minerals) formed between...: rhonoĢte, pyroxenite xenoliths, Mount Sidney, volcano, Antarctica, kaersutite. Introduction RHOĢNITE...pyroxenite xenoliths from Mount Sidley, Marie Byrd Land volcanic province, Antarctica, are compared with published |  | 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) | | of Phonolite, Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity...of Phonolite, Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity...of Phonolite, Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity...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 |  | 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 EnĆironmental Sciences, Western State College, Gunnison, CO 81231, USA Department...basalts from the Crary Mountains, eastern Marie Byrd Land, Antarctica have low 87Srr86 Sr Ž0.70267ā0.70283...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., 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) | | -z ORIGINAL PAPER Evolution of pantellerite-trachyte-phonolite volcanoes by fractional crystallization...magma in a continental rift setting, Marie Byrd Land, Antarctica Wesley E. LeMasurier ā¢ Sung Hi Choi ā¢...2011 Ć Springer-Verlag 2011 Abstract The Marie Byrd Land province includes 18 large (up to 1,800 km3)...basal 1,000ā5,000 m of basanite surmounted by trachyte and subordinate intermediate rocks, plus phonolite...isotopic equilibrium throughout the basalt-felsic range, and the results of modeling, all exclude significant |  | | 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 |  | | Journal (article/letter/editorial) | | Cenozoic, alkalic volcanic lineages at Mount Morning, West Antarctica and their entrained lithospheric mantle...identiļ¬ed at Mount Morning, a Cenozoic to recent, eruptive centre in the Ross Sea, West Antarctica, which is...trace element and isotope variation (SrāNdāPb) in Mount Morning basaltic rocks and entrained xenoliths suggests...volcanic rocks in Antarctica (Victoria Land ā including Mount Morning ā and Marie Byrd Land), Zealandia and...measured in some SCLM xenoliths and volcanic rocks at Mount Morning, and in volcanic rocks across the DAMP, |  | Lucas, Erica M., Soto, David, Nyblade, Andrew A., Lloyd, Andrew J., Aster, Richard C., Wiens, Douglas A., O'Donnell, John Paul, Stuart, Graham W., Wilson, Terry J., Dalziel, Ian W., Winberry, J. Paul, Huerta, Audrey D. (2020) P- and S-wave velocity structure of central West Antarctica: Implications for the tectonic evolution of the West Antarctic Rift System. Earth and Planetary Science Letters, 546. 116437pp. doi:10.1016/j.epsl.2020.116437 | Journal (article/letter/editorial) | | and S-wave velocity structure of central West Antarctica: Implications for the tectonic evolution of the...Available online xxxx Editor: M. Ishii Keywords: Antarctica West Antarctic Rift System mantle structure seismic...km depth beneath the central portions of West Antarctica, obtained by inverting relative travel-times...anomaly (ā1.0% Vp; ā2.0% Vs) imaged beneath Marie Byrd Land is attributed to thermally perturbed upper...structure that may include warm mantle ļ¬owing from Marie Byrd Land. High velocity anomalies (ā¤0.8% Vp; 1.5% Vs) |  | | 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... (2004) and Moore et al. (2008). Felsic (i.e. trachyte and phonolite) members of this suite are concentrated...Rehoboth in central Namibia where phonolite and trachyte, possibly of different ages (see below), are again |  | | Journal (article/letter/editorial) | | com/locate/lithos Open System evolution of peralkaline trachyte and phonolite from the Suswa volcano, Kenya rift...2012 Available online 3 February 2012 Keywords: Trachyte Phonolite Central Kenya Peralkaline Province ...silica-undersaturated lavas and tuffs (trachyte, nepheline trachyte and phonolite). The eruptive products...peralkaline, silica-saturated to mildly undersaturated trachyte. The later series (C2) includes lavas and tuffs...for C2. We propose that crystallization of C1 trachyte resulted in the formation of a syenitic residue |  | | 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 |  | 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) | | Volume 104, pages 1750ā1764, 2019 Intra-eruptive trachyte-phonolite transition: Natural evidence and experimental...displaying compositional transition from benmoreite-trachyte to phonolite has been observed within the Al Shaatha...crystallization experiments on benmoreite and trachyte starting compositions to simulate the pressur...and anhydrous (for benmoreite) or hydrous (for trachyte) conditions. At low pressure (200 MPa), temperatures...high (>90%), and the residual glass obtained from trachyte experiments is characterized by peralkaline and |  | | 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 |  | | Report (chapter) | | 3, 2015 Lithospheric mantle domains beneath Antarctica P. T. L E A T 1, A . A. D E A N 1, I. L. M I...mantle sources. Data have been collated from Antarctica and the Falkland Islands (adjacent in Gondwana)...Proterozoic cratonic and circumcratonic areas of East Antarctica have time-corrected end values of -20 to -3....lithosphere-derived marie rocks from Middle Proterozoic to Early Palaeozoic areas of West Antarctica, Victoria...Victoria Land and the Falkland Islands that formed the Gondwana continental margin, have timecorrected eyd values |  | | Journal (article/letter/editorial) | | sediment in LGM tills from the Ross Embayment, Antarctica G. Lang Farmer a,ā, Kathy Licht b , R. Jeffrey...tills in the Ross Sea and surrounding areas, Antarctica. The purpose was to determine the provenance...Ross Sea margin. Specifically, till ĪµNd values range from ā 5.6 to ā 9.9 for the West Antarctic (Siple...the ĪµNd in the central portions of the mountains range from ā11.9 to ā14.9. Uranogenic Pb becomes less...geographically, with the b63 Ī¼m fraction from both the western and eastern Ross Sea tills having higher ĪµNd values |  | | Journal (article/letter/editorial) | | constant and probably close to unity for a wide range of peralkaline and similar depolymerized melts....depolymerized melt, DHf ā¬ 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 |  | Kipf, A., Hauff, F., Werner, R., Gohl, K., van den Bogaard, P., Hoernle, K., Maicher, D., KlĆ¼gel, A. (2014) Seamounts off the West Antarctic margin: A case for non-hotspot driven intraplate volcanism. Gondwana Research, 25 (4) 1660-1679 doi:10.1016/j.gr.2013.06.013 | Journal (article/letter/editorial) | | pertain. ACCEPTED MANUSCRIPT Kipf et al.: Marie Byrd Seamountsā¦ 1 SEAMOUNTS OFF THE WEST ANTARCTIC...geochemical data of volcanic rocks from the guyot-type Marie Byrd Seamounts (MBS) and the De Gerlache Seamounts...lithosphere during the pre-rifting stage of Marie Byrd Land/Zealandia to explain intraplate volcanism in...rise of the HIMU material from the base of Marie Byrd Land to form the MBS. The De Gerlache Seamounts...Gerlache Gravity Anomaly. CE P KEYWORDS: Antarctica, Marie Byrd Seamounts, intraplate volcanism, 40 Ar/39Ar |  | 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) | | large volumes of saturated lavas (trachyandesite-trachyte (TT)) together with minor pyroclastic rocks. TT...(stage-4). The results affirm the advantages of using a range of compositional and textural records in modeling...volumes of saturated 20 lavas (trachyandesite-trachyte (TT)) together with minor pyroclastic rocks. TT...The results affirm the 43 advantages of using a range of compositional and textural records in modeling...future hazard assessments. 66 Trachyandesite-trachyte (TT) lava flows and subordinate equivalent pyroclastic |  | | Journal (article/letter/editorial) | | alkali lamprophyre dyke swarm was emplaced in western South Island, New Zealand, during transtensional...aegirineāriebeckite schists. Carbonatites show a wide range of compositions from calcite- through dolomiteāankerite-...contacts with the carbonatites as well as tinguaite, trachyte and, less extensively, lamprophyre. In quartzofeldspathic...synthetic standards were prepared to extend the range of calibration for Ca, Mg and Fe. Fused discs of...matrix-calibration curves and to extend the analytical range. Proportions of the stable isotopes were measured |  | Marzoli, Andrea, Renne, Paul R., Piccirillo, Enzo M., Francesca, Castorina, Bellieni, Giuliano, Melfi, Adolpho J., Nyobe, Jean B., N'ni, Jean (1999) Silicic magmas from the continental Cameroon Volcanic Line (Oku, Bambouto and Ngaoundere): 40 Ar- 39 Ar dates, petrology, Sr-Nd-O isotopes and their petrogenetic significance. Contributions to Mineralogy and Petrology, 135 (2) 133-150 doi:10.1007/s004100050502 | Journal (article/letter/editorial) | | younger (11-9 Ma) than the Q-trachytes of the Western Highlands. The least diĀerentiated silicic volcanics...mechanism for genesis of the silicic melts of both Western and Eastern Highlands, as shown by modeling major...genesis of the least evolved Q-trachytes from the Western Highlands, starting from slightly to moderately...data on the main silicic volcanic centres of the Western (Mt. Oku, Sabga and Mt. Bambouto) and Eastern (Ngaoundere...this study belong to the volcanic centres of the Western (Mt. Oku, Sabga area and Mt. Bambouto) and Eastern |  | Xiao, Nie, Zongqi, Wang, Lei, Chen, Jingwu, Yin, Haiming, Xu, Li, Fan, Gang, Wang, Bobo, An (2020) Trachytic magmatism and
Nbā
rare earth element mineralization in the Pingli area, North Daba Mountain: Insights from geochronology and geochemistry. Geological Journal, 55 (12). 8225-8243 doi:10.1002/gj.3930 | Journal (article/letter/editorial) | | interpreted to represent the diagenetic age of the trachyte. Zircon grains with a younger age (241ā240 Ma)...reflects the NbāREE mineralization age in the trachyte. Geochemically, the trachytes have high SiO2 contents...identification of highly fractionated Early Triassic trachyte is important for targeting regional NbāREE deposits...geochemistry, NbāREE mineralization, North Daba Mountain, trachyte, zircon Hf isotope, zircon UāPb chronology 1...distribution, and magmatic Trachytic porphyry and trachyte: These rocks are predominantly rocks between |  | | Journal (article/letter/editorial) | | 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...(Moll-Stalcup and Arth , 1991); Antarctica: Mt. Sidley plus Mt. Waesche, Marie Byrd Land (Panter et al., 1997)...Plateau on the West rift shoulder, Northern Victoria Land (Rocholl et al., 1995); Arizona: gabbroic xenoliths...Hawkesworth, 1993); Crescent basalts, northern Coast Range (Babcock et al, 1992); Wyoming: Yellowstone Plateau |  | Ashwal, Lewis, Torsvik, Trond, HorvĆ”th, PĆ©ter, 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) | | as confirmed by a UāPb zircon age of 68 Ma. Trachyte mineralogy is dominated by low-Ca alkali feldspar...reaction rims that approach typical trachyte mineral compositions. Trachyte major elements cluster at 63 wt...403 6 015 (n Ā¼ 13), near the lower end of the range for basalts (eNd Ā¼ Ć¾370 to Ć¾ 575), but the initial...apply to other trachyte and phonolite occurrences worldwide. Key words: Mauritius; trachyte; Daly Gap; mantle...intermediate rock compositions between basalt and trachyte (e.g. Chayes, 1977; Clague, 1978). Trachytes are |  | Jung, S., Mezger, K., Hauff, F., Pack, A., Hoernes, S. (2013) Petrogenesis of rift-related tephrites, phonolites and trachytes (Central European Volcanic Province, Rhƶn, 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 7ā° which is the same range as observed in the primitive...a less silica-undersaturated alkali basalt to trachyte lineage (e.g., Wilson et al., 1995; Panter et...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 Rhƶn phonolites are abundant but...differentiated rocks (i.e., tephrites) occur in the western sector of the Rhƶn area. Wedepohl et al. (1994) |
|
