Search Results - "Haase, K. M."
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Magmatic Evolution of the Fossil Melanesian Island Arc: Evidence From Lower Miocene Lavas of Malekula Island (Vanuatu)
Published in Geochemistry, geophysics, geosystems : G3 (01-02-2024)“…The subduction zones in the SW Pacific Ocean are some of the most dynamic plate boundaries on Earth with changes in subduction polarity and subduction…”
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Systematic and Temporal Geochemical Changes in the Upper Deccan Lavas: Implications for the Magma Plumbing System of Flood Basalt Provinces
Published in Geochemistry, geophysics, geosystems : G3 (01-02-2023)“…Large Igneous Provinces (LIPs) are unusual volcanic events in which massive amounts of melt (∼106 km3) erupt in relatively short time periods (<106 years)…”
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Mantle sources and magma evolution of the Rooiberg lavas, Bushveld Large Igneous Province, South Africa
Published in Contributions to mineralogy and petrology (01-06-2018)“…We report a new whole-rock dataset of major and trace element abundances and 87 Sr/ 86 Sr– 143 Nd/ 144 Nd isotope ratios for basaltic to rhyolitic lavas from…”
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Effects of the Hydrous Domain in the Mantle Wedge on Magma Formation and Mixing at the Northeast Lau Spreading Center, SW Pacific
Published in Geochemistry, geophysics, geosystems : G3 (01-03-2022)“…Abundant volcanic activity occurs in the back‐arc region of the northern Tofua island arc where the Northeast Lau Spreading Center (NELSC) propagates…”
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5
Migration of Arc Magmatism Above Mantle Wedge Diapirs With Variable Sediment Contribution in the Aegean
Published in Geochemistry, geophysics, geosystems : G3 (01-06-2021)“…Abstract Compiled data show the age progression of magmatic centers along the two approximately linear profiles from NE Greece and NW Turkey to the South…”
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Evolution of Magmatism in the New Hebrides Island Arc and in Initial Back‐Arc Rifting, SW Pacific
Published in Geochemistry, geophysics, geosystems : G3 (01-09-2020)“…Abstract We present new geochemical and isotopic data for rock samples from two island arc volcanoes, Erromango and Vulcan Seamount, and from a 500 m thick…”
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Lithium Isotope Variations in Ocean Island Basalts—Implications for the Development of Mantle Heterogeneity
Published in Journal of petrology (01-11-2012)“…Lithium elemental and isotopic compositions of 33 glass and whole-rock samples from nine oceanic island regions were determined to characterize the Li…”
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Magmatic evolution of the South Shetland Islands, Antarctica, and implications for continental crust formation
Published in Contributions to mineralogy and petrology (01-06-2012)“…Lavas from the South Shetland Islands volcanic arc (northern Antarctic Peninsula) have been investigated in order to determine the age, petrogenesis and…”
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Petrology and geochemistry of the Tertiary Suez rift volcanism, Sinai, Egypt
Published in Journal of volcanology and geothermal research (01-11-2013)“…The Tertiary basaltic rocks of Southwestern Sinai, situated along the Wadi Nukhul–Wadi Matullah–Wadi El Tayiba join, were selected to study the Gulf of Suez…”
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Magma Genesis and Mantle Dynamics at the Harrat Ash Shamah Volcanic Field (Southern Syria)
Published in Journal of petrology (01-08-2007)“…A geochemical and petrological study of Miocene to recent alkali basalts, basanites, hawaiites, mugearites, trachytes, and phonolites erupted within the Harrat…”
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11
Magma genesis and crustal contamination of continental intraplate lavas in northwestern Syria
Published in Contributions to mineralogy and petrology (01-06-2006)“…The Miocene to Quaternary lavas of northwestern Syria range from basanite, alkali basalts, and tholeiites to basaltic andesites, hawaiites, and mugearites…”
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Formation of the Vergenoeg F–Fe–REE Deposit (South Africa) by Accumulation from a Ferroan Silicic Magma
Published in Journal of petrology (01-12-2019)“…Abstract Situated in the centre of the Paleoproterozoic Bushveld Large Igneous Province (LIP) of South Africa the Vergenoeg F–Fe–REE deposit is one of the…”
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13
The Evolution of Central Volcanoes in Ultraslow Rift Systems: Constraints From D. João de Castro Seamount, Azores
Published in Tectonics (Washington, D.C.) (01-07-2021)“…The Dom João de Castro seamount in the Hirondelle Basin (Azores) is a central volcano on the ultraslow diverging Terceira Rift axis. The combination of…”
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Rifting of the oceanic Azores Plateau with episodic volcanic activity
Published in Scientific reports (12-11-2020)“…Extension of the Azores Plateau along the Terceira Rift exposes a lava sequence on the steep northern flank of the Hirondelle Basin. Unlike typical tholeiitic…”
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Geochemistry and petrology of lavas from the submarine flanks of Réunion Island (western Indian Ocean): implications for magma genesis and the mantle source
Published in Mineralogy and petrology (01-07-2002)“…Major and trace element data as well as Sr and Nd isotope compositions for submarine lavas from the flanks of Reunion island are reported. The submarine…”
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Formation of the Troodos Ophiolite at a triple junction: Evidence from trace elements in volcanic glass
Published in Chemical geology (29-10-2014)“…Fresh volcanic glasses from the extrusive section of the Troodos Ophiolite in Akaki Canyon are tholeiitic and basaltic to dacitic in composition. Compared to…”
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Petrology and geochemistry of crustally contaminated komatiitic basalts from the Vetreny Belt, southeastern Baltic Shield: Evidence for an early Proterozoic mantle plume beneath rifted Archean continental lithosphere
Published in Geochimica et cosmochimica acta (01-03-1997)“…New isotope and trace element data are presented for komatiitic basalts and a related peridotite Vinela Dike from the large Vetreny Belt in the southeastern…”
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Oxygen isotope evidence for the formation of silicic Kermadec island arc and Havre–Lau backarc magmas by fractional crystallisation
Published in Earth and planetary science letters (15-09-2011)“…Silicic magmas in subduction-related settings are believed to form either by extreme crystal fractionation or by partial melting of crustal rocks, particularly…”
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Magmatic evolution of a dying spreading axis: Evidence for the interaction of tectonics and mantle heterogeneity from the fossil Phoenix Ridge, Drake Passage
Published in Chemical geology (07-01-2011)“…New 40Ar– 39Ar ages of 5.6 to 1.3 Ma for lavas from the fossil Phoenix Ridge in the Drake Passage show that magmatism continued for at least 2 Ma after the…”
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Petrology of mafic lavas within the Onega plateau, central Karelia: evidence for 2.0 Ga plume-related continental crustal growth in the Baltic Shield
Published in Contributions to mineralogy and petrology (01-01-1998)“…The Onega plateau constitutes part of a vast continental flood basalt province in the SE Baltic Shield. It consists of Jatulian-Ludikovian submarine volcanic,…”
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