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Bayes x Geology and the Lithosphere x clear all

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Overview page. Subjects: Architecture.

[Ge]

Structural division in the length of a building or roof. The unit within a building between a pair of piers or buttresses; the division of a roof marked by its main trusses.

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See overview in Oxford Index

Magma Origin and Evolution of White Island (Whakaari) Volcano, Bay of Plenty, New Zealand

J. W. COLE, T. THORDARSON and R. M. BURT.

in Journal of Petrology

June 2000; p ublished online June 2000 .

Journal Article. Subjects: Petrology. 14094 words.

White Island is an active composite stratovolcano in the Bay of Plenty, New Zealand, that comprises many small volume (<0·1 km 3 ) andesite–dacite lava flows and...

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Seismic Properties of Anita Bay Dunite: an Exploratory Study of the Influence of Water

Yoshitaka Aizawa, Auke Barnhoorn, Ulrich H. Faul, John D. Fitz Gerald, Ian Jackson and IstvÁn Kovács.

in Journal of Petrology

April 2008; p ublished online March 2008 .

Journal Article. Subjects: Petrology. 8186 words.

As a pilot study of the role of water in the attenuation of seismic waves in the Earth's upper mantle, we have performed a series of seismic-frequency torsional forced-oscillation...

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Mantle Structure Beneath the SW Slave Craton, Canada: Constraints from Garnet Geochemistry in the Drybones Bay Kimberlite

G. B. CARBNO and D. CANIL.

in Journal of Petrology

January 2002; p ublished online January 2002 .

Journal Article. Subjects: Petrology. 7383 words.

This study describes the petrography of peridotite xenoliths, and the major and trace element geochemistry of garnets in both xenoliths and coarse concentrate from the Drybones Bay...

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Genesis of Ultramafic Lamprophyres and Carbonatites at Aillik Bay, Labrador: a Consequence of Incipient Lithospheric Thinning beneath the North Atlantic Craton

SEBASTIAN TAPPE, STEPHEN F. FOLEY, GEORGE A. JENNER, LARRY M. HEAMAN, BRUCE A. KJARSGAARD, ROLF L. ROMER, ANDREAS STRACKE, NANCY JOYCE and JOCHEN HOEFS.

in Journal of Petrology

July 2006; p ublished online March 2006 .

Journal Article. Subjects: Petrology. 20358 words.

Numerous dykes of ultramafic lamprophyre (aillikite, mela-aillikite, damtjernite) and subordinate dolomite-bearing carbonatite with U–Pb perovskite emplacement ages of ∼590–555 Ma occur in...

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Geochemical and Isotopic Heterogeneities along an Island Arc–Spreading Ridge Intersection: Evidence from the Lewis Hills, Bay of Islands Ophiolite, Newfoundland

MICHAELA KURTH-VELZ, ANDREAS SASSEN and STEPHEN J. G. GALER.

in Journal of Petrology

March 2004; p ublished online March 2004 .

Journal Article. Subjects: Petrology. 20609 words.

This study focuses on the origin of magma heterogeneity and the genesis of refractory, boninite-type magmas along an arc–ridge intersection, exposed in the Lewis Hills (Bay of Islands...

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Magmatic Evolution of the Melilitite–Carbonatite–Nephelinite Dyke Series of the Turiy Peninsula (Kandalaksha Bay, White Sea, Russia)

Valeriy V. Ivanikov, Alexey S. Rukhlov and Keith Bell.

in Journal of Petrology

November 1998; p ublished online November 1998 .

Journal Article. Subjects: Petrology. 8088 words.

Major and trace element data are presented from a suite of melilitite–carbonatite–nephelinite dykes, the youngest of three dykes swarms in the Turiy peninsula, Russia. The most primitive...

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Phase Equilibrium Modeling of MT–UHP Eclogite: a Case Study of Coesite Eclogite at Yangkou Bay, Sulu Belt, Eastern China

Bin Xia, Michael Brown, Lu Wang, Song-Jie Wang and Philip Piccoli.

in Journal of Petrology

July 2018; p ublished online June 2018 .

Journal Article. Subjects: Petrology. 21442 words.

Abstract

In this study, we present an example of phase equilibrium modeling of medium-temperature–ultrahigh-pressure (MT–UHP) eclogites that includes...

Kimberlites, Orangeites, Lamproites, Melilitites and Minettes: A Petrographic Atlas, by R. H. Mitchell. Almaz Press, Thunder Bay, Ont., 1997. 234 pp. ISBN 0 886 63026 6. Price $100.

E. A. Dunworth.

in Journal of Petrology

October 1998; p ublished online October 1998 .

Journal Article. Subjects: Petrology. 550 words.

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Tectonic Setting of 2.6 Ga Carbonatites in the Slave Province, NW Canada

M. E. Villeneuve and C. Relf.

in Journal of Petrology

November 1998; p ublished online November 1998 .

Journal Article. Subjects: Petrology. 6482 words.

An Archaean carbonatite-bearing alkaline complex, the Grays Bay alkaline complex, has been mapped in the Slave Province of northwestern Canada. It consists of five sequentially emplaced...

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The Petrogenesis and Mantle Source of Archaean Ferropicrites from the Western Superior Province, Ontario, Canada

Shoshana B. Goldstein and Don Francis.

in Journal of Petrology

October 2008; p ublished online September 2008 .

Journal Article. Subjects: Petrology. 12985 words.

Archaean ferropicrites have been under-appreciated in the past because they have been frequently misidentified as enriched komatiites or Al-depleted komatiites. To investigate the nature of...

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Systematic Variation of Sr-, Nd- and Pb-Isotopes with Time in Lavas of Mauritius, Réunion Hotspot

SUSUMU NOHDA, ICHIRO KANEOKA, TAKESHI HANYU, SHENG XU and KOZO UTO.

in Journal of Petrology

March 2005; p ublished online November 2004 .

Journal Article. Subjects: Petrology. 7391 words.

We report Sr-, Nd- and Pb-isotopic compositions for the lavas of Mauritius, the second youngest volcanic island in the Réunion hotspot. The lavas of the Older Series (7·8–5·5 Ma) have...

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Origin of CFB Magmatism: Multi-tiered Intracrustal Picrite–Rhyolite Magmatic Plumbing at Spitzkoppe, Western Namibia, during Early Cretaceous Etendeka Magmatism

R. N. Thompson, A. J. V. Riches, P. M. Antoshechkina, D. G. Pearson, G. M. Nowell, C. J. Ottley, A. P. Dickin, V. L. Hards, A.-K. Nguno and V. Niku-Paavola.

in Journal of Petrology

June 2007; p ublished online April 2007 .

Journal Article. Subjects: Petrology. 21840 words.

Early Cretaceous tholeiitic picrite-to-rhyolite dykes around Spitzkoppe, western Namibia, are part of the extensive Henties Bay–Outjo swarm, penecontemporaneous with ∼132 Ma Etendeka lavas...

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Melt Migration under Oceanic Ridges: Inferences from Reactive Transport Modelling of Upper Mantle Hosted Dunites

Günter Suhr.

in Journal of Petrology

April 1999; p ublished online April 1999 .

Journal Article. Subjects: Petrology. 15890 words.

Dunite bodies within the ophiolitic upper mantle are widely considered to locate pathways for melt transport in the sub-oceanic mantle. As such, the dunites may carry information about the...

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Petrology and Geochronology of Granulites from the McKaskle Hills, Eastern Amery Ice Shelf, Antarctica, and Implications for the Evolution of the Prydz Belt

Xiaochun Liu, Yue Zhao, Guochun Zhao, Ping Jian and Gang Xu.

in Journal of Petrology

August 2007; p ublished online June 2007 .

Journal Article. Subjects: Petrology. 17117 words.

A combined petrological and geochronological study was carried out on mafic granulites and associated felsic gneisses from the McKaskle Hills, eastern Amery Ice Shelf, East Antarctica....

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Neoarchean (c. 2·7 Ga) Plutons of the Ungava Craton, Québec, Canada: Parental Magma Compositions and Implications for Fe-rich Mantle Source Regions

Dejan Milidragovic, Don Francis, Dominique Weis and Marc Constantin.

in Journal of Petrology

December 2014; p ublished online December 2014 .

Journal Article. Subjects: Petrology. 18507 words.

Mafic to ultramafic intrusions of the Qullinaaraaluk suite (Q-suite) were emplaced into the Ungava craton of the Northeastern Superior Province during an episode of intense igneous activity...

Sulfide Liquid Entrainment by Silicate Magma: Implications for the Dynamics and Petrogenesis of Magmatic Sulfide Deposits

B. M. Saumur, A. R. Cruden and D. Boutelier.

in Journal of Petrology

December 2015; p ublished online February 2016 .

Journal Article. Subjects: Petrology. 13101 words.

Many intrusion-hosted Ni–Cu magmatic sulfide deposits, such as Voisey’s Bay (Labrador, Canada) and Jinchuan (China), show evidence for late-stage mobilization of high-density, low-viscosity...