 | | Journal (article/letter/editorial) | | LAKE RUDOLF REGION: 1. T H E B A S A N I T E - T E P H R I T E SERIES OF THE KORATH RANGE F.H. BROWN ...of the Lake Rudolf Region: I. T h e basanite-tephrite series of the Korath Range. Lithos 2, 239-260.... T h e Korath Range, a QuaternatT volcanic range, is situated in southern Ethiopia, and is one of a n...produced basanite and tephrite lavas with phenocrysts of titanaugite, olivine (in the basanites) and Ti-poor...groundmass and is zoned normally from bytownite to sodic labradorite.Nepheline, leucite and phlogopite |  | | Journal (article/letter/editorial) | | LAKE RUDOLF REGION: 1. T H E B A S A N I T E - T E P H R I T E SERIES OF THE KORATH RANGE F.It. BROWN...of the Lake Rudolf Region: I. T h e basanite-tephrite series of the Korath Range. Lithos 2, 239-260.... T h e Korath Range, a Quaternary volcanic range, is situated in southern Ethiopia, and is one of a n...produced basanite and tephrite lavas with phenocrysts of titanaugite, olivine (in the basanites) and Ti-poor...groundmass and is zoned normally from bytownite to sodic labradorite.Nepbeline, leucite and phlogopite |  | | Journal (article/letter/editorial) | | tephrites, ankaramitic lavas and trachyte. Phenecrysts of ofivine, clinopyroxene and pla#ocla~ are found m b~a_nite...hanyne. Olivine and less conm~only hauyne are absent from tephrite while amphibole and biotite are common...phases and are thought to represent crystal clots or cumulates. Low Ti, high AI, low Ni and Cr and high...~ from Indonesia. Although the structure in the region of Ambittle is not web known h seems likely that...alone are insufficient to explain their composition and processes of volatile differentiation m~y have occurred |  | | Journal (article/letter/editorial) | | Petrology of Clinopyroxenite Ejecta from Somma-Vesuvius and Their Genetic Implications A. Cundari With 3 Figures...Summary A suite of clinopyroxenite nodules, megacrysts and associated lavas from Somma-Vesuvius, Italy, has...the Roman Region. The clinopyroxenites are essentially composed of clinopyroxene + mica and subordinate...subordinate olivine, plagioclase, spinels, apatite and glass. The megacrysts are clinopyroxene fragments. The...The associated lavas are leucite-tephrites and a tephritic leucitite. The mineralogy of the clinopyroxenites |  | | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib. Mineral. Petrol. 71, 139 150 (1979) 9 by Springer-Verlag...Quaternary Alkalic and Sub-Alkalic Volcanism in South Auckland, New Zealand Warwick J. Rafferty and Robert F....respects comparable to back-arc volcanism of Japan and intra-plate volcanism in S.E. Australia. Volcanism...between 1.56 m.y. (B.P.) and 0.51 m.y. has produced some 20 km 3 of lava and scoria from at least 70 centres...alkalic (basanite and alkali-olivine basalt), and are associated with maars and small scoria cones and many |  | | Journal (article/letter/editorial) | | VOLCANOES RUDOLF REGION : H. OF THE LAKE The lavas of North Island, South Island and the Barrier F...volcanoes of the Lake Rudolf Region: II. The lavas of North Island, South Island and the Barrier. Lithos 4,... 305-23. North Island, South Island, and the Barrier are Quaternary volcanoes in the Lake Rudolf portion...to trachyte. Magnesian olivine, diopsidic augite, and calcic plagioclase appear as phengcrysts in the more...plagioclase, magnetite and/or ilmenite, and interstitial glass. The amount of potassium and iron in the plagioclase |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 35, 119--124 (1972) 9 by Springer-Verlag 1972 The Major and Trace Element...Element Chemistry of Kaersutite and Its Bearing on the Petrogenesis of Alkaline Rocks S. Kesson Department of...Zealand Received March 10, 1972 Abstract. New major and trace element analyses are presented for 7 kaersutites...lie between 1209 and 4276. Rb is low, averaging 6 ppm. Sr ranges from 532 to 1060 ppm and Ba from 181 to...to 701 ppm. Zr averages 109 ppm, Nb 44 ppm and V 390 ppm. There is a moderate enrichment in light REE |  | | Journal (article/letter/editorial) | | Springer-Verlag 1975 Fractional Crystallisation and the Petrology of Dunedin Volcano R.C. Price Department...Abstract. Major and trace element data and mineral chemical data indicate that the range in rock types...various levels in the crust and upper mantle. A diversity among parental materials and the operation of the...fractionation process at varying levels in the crust and mantle under varying conditions of pH20 have resulted...series are: basalt-hawaiite-mugearite-benmoreite; basanite-nepheline hawaiitenepheline mugearite-nepheline |  | | Journal (article/letter/editorial) | | University of Melbourne, Parkville, 3052, Australia, and the Broken Hill Proprietary Company Limited, Melbourne...Chemistry from Leucite-Bearing and Related Assemblages A. Cundari and A. K. Ferguson With 2 Figures Received...leucite-bearing and related assemblages occurring in south-west Uganda, Roman Region, Australia and Antarctica...distinct and systematic chemical variations, which are evaluated in terms of the ratios Ti/A1 and (2-Si)/A1...rock series and depend on the level of alkalinity of the host rocks, i.e. (Na+K)/A1 and the pressure |  | | Journal (article/letter/editorial) | | acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not...will undergo additional copyediting, typesetting and review before it is published in its final form,...may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain...the Mobile Belt Tyrone O. Rooney Dept. of Earth and Environmental Sciences, Michigan State University...temporal development of magmatism in both rifts, and within the interposing Turkana re Depression. Notwithstanding |  | | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib Mineral Petrol (1982) 81:212-218 9 Springer-Verlag...Crystallization Trends in Leucite-Bearing and Related Assemblages A.K. Ferguson* and A. Cundari School of Earth Sciences...leucite-bearing and related rocks from well-known localities in Italy, Germany, Uganda and Australia demonstrate...feldspar crystallization trend in the host lava and only the groundmass feldspar zoning trend is a reliable...relationships indicate that coexisting plagioclase and alkali feldspar crystallized sequentially, the latter |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 30, 291-295 (1971) 9 by Springer-Verlag 1971 On the Presence of Leucite...demonstrated in a number of alkali-basalts and basanites from the tertiary and quaternary volcanic province of central...leueitess~- alkali feldsparss would be a frequent one, and our observations tend to support the view that it...Africa. The presence of analeite in alka]i-basalts and basanites is since, well established b u t t h e...d B r o w n a n d Carmiehael in the K o r a t h range of K e n y a (1969). To the best of our knowledge |  | | Report (chapter) | | North Lake Turkana Basin In the lower Omo valley (Ethiopia), north of Lake Turkana (formerly Lake Rudolf)...sediments and pyrodastics is exposed, the age of which has been determined by conventional K[Ar and paleomagnetic...methods to fall between 0.8 m.v. and 3.2 m.y. Still older sediments and pyroclastics occur at the northernmost...northernmost margin of the basin and have ages both greater and just less than 4 m.y. Another succession...succession of fossiliferous sediments and pyrodasties is exposed over a large area in Kenya east of Lake Turkana |  | | Journal (article/letter/editorial) | | Mineral Chemistry and Petrogenetic Aspects of the Vico Lavas, Roman Volcanic Region, Italy A. Cundari...the "excess silica" in leucite is a significant and widespread crystal-chemical characteristic which...interpreted in terms of an extended solubility of KA1SiaO8 and/or differential loss of potassium from the leucite...ferri-Tschermak's and Ca-Tschermak's molecules, probably controUed by temperature and compositional variations...variations in the cooling liquids. Both microphenocrystal and late-crystallizing micas correspond to phlogopite |  | | Journal (article/letter/editorial) | | Geothermometer Marjorie Powell * and Roger Powell * Department of Geology and Geophysics, University of California...that the clinopyroxene M 1 site must be nonideal and it is expressed as a regular solution. The appropriate...is calculated from abailable experimental work, and is approximately 5~ per kilobar. Layered gabbros...consistent ~ith formation at 1300~ at 55 kb, 1400~ 72 kb and 1500~ 90 kb. Ultrabasic xenoliths in Basutoland kimberlites... including alkali basalts, basanites, andesites and rhyolites give temperatures from 1025~C to 890~C |  | | Journal (article/letter/editorial) | | (1992) 110:311-320 Contributions to Mineralogy and Petrology 9 Springer-Verlag 1992 Heat capacities...liquids Rebecca A. Lange* and Alexandra Navrotsky Department of Geological and Geophysical Sciences,Princeton...3 - S i O 2 system and four of natural composition (basanite, andesite, dacite, and peralkaline rhyolite)...standard deviations on our heat capacity measurements range from 0.6 to 3.6%. Stepscanning calorimetry is particularly...controlled; (3) heat capacity is measured directly and not derived from the slope of enthalpy measurements |  | | Journal (article/letter/editorial) | | occurrence of such mineral pairs as leucite and sanidine, or nepheline and albite indicates that silica activity...activity may be buffered over a range of temperatures. Using published thermody'namic data, the variation...variation of silica activity with temperature for these and other reactions has been calculated. Two bounding...the tholeiitic magma and CaTiOr*SiOz:CaTiSiOs; series from alkali olivine-basalt and all its derivatives...feldspar-present from the feldspar-free assemblages,and thus the nephelinites (sensulato) from the alkali |  | Stolz, A. J., Varne, R., Wheller, G. E., Foden, J. D., Abbott, M. J. (1988) The geochemistry and petrogenesis of K-rich alkaline volcanics from the Batu Tara volcano, eastern Sunda arc. Contributions to Mineralogy and Petrology, 98 (3) 374-389 doi:10.1007/bf00375187 | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib Mineral Petrol (1988) 98:374-389 9 Springer-Verlag1988...Springer-Verlag1988 The geochemistry and petrogenesis of K-rich alkaline volcanics from the Batu Tara volcano, eastern...Stolz 1, R. Varnc ~, G.E. Wheller 1, J.D. Foden 2, and M.J. Abbott 3 1 Department of Geology, University...Mineralogical, major and trace element, and isotopic data are presented for leucite basanite and leucite tephrite...tephrite eruptives and dykes from the Batu Tara volcano, eastern Sunda arc. In general, the eruptives are |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 33, 162-170 (1971) 9 by Springer-Verlag 1971 Shonkin Sag Laccolith, Montana...Geochemistry W. P. Nash Department of Geological and Geophysical Sciences, University of Utah, Salt Lake...sequence displays systematic variations in major and trace elements with evolution. The accumulative more...shonkinites are enriched in Co, Ni, Cr; La, Ce, Zr, and Nb are concentrated in the most evolved differentiate...nepheline syenite. Maximum abundances of K, Rb, Ba, Pb, and Sr occur in the intermediate syenitic differentiates |  | | Journal (article/letter/editorial) | | e-mail: ghiorso@ofm-research.org G. Moore Earth and Environmental Sciences, University of Michigan, 2534...University of Oregon, Eugene, OR 97403, USA Mineralogy and Petrology from 1973 through 1990, during which time...discipline, and the unparalleled intellectual generosity he showed toward his students and academic colleagues...many excellent biographical sketches of Ian’s life and critiques of his research contributions (e.g., Lange...associates, and to his University. He gave freely of ideas, many of which shaped the careers and reputations |  | | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib Mineral Petrol (1981) 76:127 147 9 Springer-Verlag...Late-Quaternary Cinder Cones James F. Luhr and Ian S.E. Carmichael Dept. of Geology and Geophysics, University of California...eleven cinder and lava cones have erupted on the floor of the southern Colima graben, NE and NW of the large...large, active, andesitic volcano Colima. Scoria and lava samples from nine of the cones form a completely...series including basanites (9), leucitebasanites (3), and minettes (15), the commonest variety of mica lamprophyre |  | | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib Mineral Petrol (1981) 76:321-335 9 Springer-Verlag...Baldridge .1, I.S.E. Carmichael 2, and A.L. Albee 1 1 Division of Geological and Planetary Sciences, California...Pasadena, California 91125, USA 2 Department of Geology and Geophysics, University of California, Berkeley, California...phases found in leucite-basanites, -trachytes, and -phonolites may be used to portray crystallization...magnesian biotite and suppressed sanidine, as has been found in other basanitic lavas (Brown and Carmichael |  | | Journal (article/letter/editorial) | | The Petrology and Geochemistry of Vesteris Seamount, Greenland Basin—an Intraplate Alkaline Volcano of...of Non-Plume Origin by KARSTEN M. HAASE* AND COLIN W. DEVEY (Received 19 November 1992; revised typescript...Greenland Basin some 280 km NW of Jan Mayen. Topographic and geophysical studies have shown no sign of an associated...ash layers in sediment cores around the volcano and dating of dredged samples show that it has been active...here consist of basanites, tephrites, mugearite, and alkali basalts. Crystal fractionation models are |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 37, 253--276 (1972) 9 by Springer-Verlag 1972 Contributions to the Mineral...t e r i a l i n Rocks f r o m H a l e a k a l a and W e s t M a u i Volcanoes, Maui, H a w a i i * K...Keil a n d R. V. F o d o r Department of Geology and Institute of Meteoritics, The University of New Mexico...composition, and residual SiO~-K20-rich glass in 24 rocks of the tholeiitic, alkalic, and nephelinic suites...suites from ttaleakala and West Maul volcanoes, Maul, Hawaii, were analyzed quantitatively with the electron |  | Trela, Jarek, Vidito, Christopher, Gazel, Esteban, Herzberg, Claude, Class, Cornelia, Whalen, William, Jicha, Brian, Bizimis, Michael, Alvarado, Guillermo E. (2015) Recycled crust in the Galápagos Plume source at 70 Ma: Implications for plume evolution. Earth and Planetary Science Letters, 425. 268-277 doi:10.1016/j.epsl.2015.05.036 | Journal (article/letter/editorial) | | v1.157; Prn:15/06/2015; 10:21] P.1 (1-10) Earth and Planetary Science Letters ••• (••••) •••–••• Contents...Contents lists available at ScienceDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl... Virginia Tech, Blacksburg, VA 24061, USA Earth and Planetary Sciences, Rutgers University, Piscataway...Wisconsin–Madison, Madison, WI 53706, USA e Department of Earth and Ocean Sciences, University of South Carolina, Columbia...accreted terranes of the Caribbean and along the west coast of Costa Rica and Panama provide evidence on the |
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