Accessory and rock forming minerals monitoring the evolution of zoned mafic–ultramafic complexes in the Central Ural Mountains

Krause, Joachim; Brügmann, Gerhard; Pushkarev, E. V.

doi:10.1016/j.lithos.2006.07.018

Cited by 78 publications

(66 citation statements)

References 29 publications

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“…Clinopyroxne from subduction-related magmas yield an Al Z / TiO 2 slope that is twice as steep as that in clinopyroxnes from rift-related magmas (Loucks, 1990). Clinopyroxene of IAB-type gabbros and basalts clearly follow the trend defined by volcanic rocks and cumulates from island arc magmas (Loucks, 1990;Himmelberg and Loney, 1995;Krause et al, 2007), whereas those of OIB-type gabbros follow rift cumulate trend (Figs. 11A and 11B).…”

Section: Evaluation Of Tectonic Settingmentioning

confidence: 94%

Petrogenises of Triassic gabbroic and basaltic rocks from Chukotka, NE Russia: Eastern end of the ‘arc–type’ Siberian LIP?

Desta

Ishiwatari

Machi

et al. 2015

Journal of Mineralogical and Petrological Sciences

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The Triassic gabbroic intrusions and associated basaltic lavas from Chukotka are mainly tholeiitic with both ocean island basalt (OIB) and island arc basalt (IAB)-type geochemical signatures. Mg-number [Mg# = 100 × Mg/(Mg + Fe 2+ )] is around 40 for OIB-type gabbros, ranges from 48 to 66 for IAB-type hornblende-rich gabbros, and 43 to 65 for IAB-type basaltic rocks (ankaramites, lamprophyres, pyroxene-phyric basalts and hornblende-phyric basaltic andesite). TiO 2 contents of the IAB-type gabbros and basaltic rocks are low (<2 wt%), but are high in OIB-type gabbros (4.3-5.3 wt%). OIB-type gabbros are typically enriched in FeO * (16-18 wt%) as compared to IAB-type gabbros (10-14 wt%) and IAB-type lavas (ankaramites,~10 wt%; lamprophyres,~14; pyroxene-phyric basalt, 11 wt% and basaltic andesite, 9-10 wt. %). In the primitive mantle normalized trace element patterns, IAB-type basalts and gabbros are characterized by depletion in HFSE (Nb, Ta, Zr and Hf ) and enrichment in LILE. OIB-type gabbros can be distinguished from the rests by the absence of HFSE depletion, with strong negative Sr anomaly. The positive Ti anomaly in the OIB-type gabbros can be attributed to high content of ilmenite in these rocks. Trace element characteristics of IAB-type gabbroic rocks and basalts are compatible with their magmas derived from subduction influenced melts, whereas OIB-type gabbros show within-plate geochemical characteristics. IAB-type gabbros and basaltic rocks display similar geochemical features to the low-Ti Nadezhdinsky suit (Noril'sk region) and Bel'kov dolerite (New Siberian Islands) of the Siberian large igneous province (LIP) in view of HFSE depletion and high H 2 O content of the magma to crystallize abundant hornblende not only in gabbros but also as phenocrysts in basalts. The Triassic gabbroic and basaltic rocks of both OIB and IAB types may as a whole represents the eastern end of the Siberian LIP.

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Section: Evaluation Of Tectonic Settingmentioning

confidence: 94%

Petrogenises of Triassic gabbroic and basaltic rocks from Chukotka, NE Russia: Eastern end of the ‘arc–type’ Siberian LIP?

Desta

Ishiwatari

Machi

et al. 2015

Journal of Mineralogical and Petrological Sciences

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“…Batanova et al, 2005;Krause et al, 2007). In particular, they share the negative Nb, Zr and Ti anomalies and the LREE-enrichment relative to the HREE.…”

Section: Parental Magma Of the Fourhal Magmatic Suite And Its Geotectmentioning

confidence: 92%

Clinopyroxene trace element compositions of cumulate mafic rocks and basalts from the Hercynian Moroccan Central Meseta: Petrogenetic implications

Driouch

Béziat

Grégoire

et al. 2010

Journal of African Earth Sciences

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“…Olivines and clinopyroxenes are retentive for noble gases; in-situ additions of radiogenic 4 He and 40 Ar are quite small because of very low contents of U, Th, and K in such minerals (e.g., Krause et al, 2007). Although U and Th in mineral inclusions or neighboring minerals can be a source of a-particles, the limited range of a-particles (tens of microns) means that the removal of the rims of mineral grains, e.g.…”

Section: Samples and Experimental Proceduresmentioning

confidence: 99%

Noble gas isotopic systematics of Fe–Ti–V oxide ore-related mafic–ultramafic layered intrusions in the Panxi area, China: The role of recycled oceanic crust in their petrogenesis

Hou

Zhang

et al. 2011

Geochimica et Cosmochimica Acta

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Accessory and rock forming minerals monitoring the evolution of zoned mafic–ultramafic complexes in the Central Ural Mountains

Cited by 78 publications

References 29 publications

Petrogenises of Triassic gabbroic and basaltic rocks from Chukotka, NE Russia: Eastern end of the ‘arc–type’ Siberian LIP?

Petrogenises of Triassic gabbroic and basaltic rocks from Chukotka, NE Russia: Eastern end of the ‘arc–type’ Siberian LIP?

Clinopyroxene trace element compositions of cumulate mafic rocks and basalts from the Hercynian Moroccan Central Meseta: Petrogenetic implications

Noble gas isotopic systematics of Fe–Ti–V oxide ore-related mafic–ultramafic layered intrusions in the Panxi area, China: The role of recycled oceanic crust in their petrogenesis

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