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Petrogenesis of the Neoarchean zincian chromite within ultramafic xenoliths, Bastar Craton, India
The present study reports and discusses the genesis of zincian chromite in the ultramafic xenoliths from the Dongripali area, Bastar craton, Central...
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Evidence for suboceanic small-scale convection from a “garnet”-bearing lherzolite xenolith from Aitutaki Island, Cook Islands
Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic...
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Orbicular and Nodular Structures in Carbonatite of the Sung Valley Ultramafic-Alkaline-Carbonatite Complex, Shillong Plateau, Meghalaya, NE India: Their Petrogenetic Implications
Hitherto unknown rare orbicular carbonatites and associated nodular structures occur in the southeastern parts of the Cretaceous Sung valley...
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Low Crustal Fluid Reservoirs in Ultramafic Cumulates of Kamchatka
AbstractBased on published geophysical and petrological data, lower crustal fluid reservoirs have been proposed below the Klyuchevskoy Volcano,...
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Aragonite in the Interstitial Space of a Mantle Xenolith from the Udachnaya Kimberlite Pipe (Siberian Craton): Direct Evidence for the Presence of Carbonatite Melts in the Deep Lithospheric Mantle
AbstractThis paper reports the first discovery of zoned aragonite, a high-pressure CaCO 3 polymorph, in a mantle xenolith from kimberlite. Aragonite...
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Chromite chemistry as petrogenetic indicator of altered ultramafic rocks from Higher Himalayan Crystalline, Kishtwar, India
AbstractThe altered ultramafic rocks from Higher Himalayan Crystalline (HHC) are characterised by the mineral assemblage of olivine, pyroxene,...
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Xenolith Petrology
The xenoliths can be classified into two groups: (a) mantle xenoliths and (b) crustal xenoliths. On the basis of tectonic considerations, they belong...
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Perovskite geochronology and petrogenesis of the Neoproterozoic Mad Gap Yards ultramafic lamprophyre dykes, East Kimberley region, Western Australia
The Mad Gap Yards ultramafic lamprophyre (UML) dykes in the East Kimberley region of northern Western Australia form part of a widespread...
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Mafic to ultramafic xenoliths from Mauna Kea, Hawaii: clues to magma evolution from trace element compositions of clinopyroxene
Mafic and ultramafic xenoliths were erupted with hawaiite lavas from a post-shield, Laupahoehoe cinder cone on Mauna Kea volcano, Hawaii. Major...
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The geology, geochemistry, and magmatic evolution of the Legris Lake mafic–ultramafic complex, Ontario, Canada
The Archean Legris Lake mafic–ultramafic complex (LLC) is spatially (~ 12 km east) and temporally (2690.59 ± 0.77 Ma) associated with the world-class...
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Metasomatism in the Precambrian Crust of the Siberian Craton: Results of a Study of Garnet(±Orthopyroxene)–Biotite–Feldspar Xenolith Rocks from Yubileinaya and Sytykanskaya Kimberlite Pipes, Yakutia
AbstractXenoliths in kimberlites are the most promising material for studying the composition and structure of the lower levels of the continental...
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Petrogenesis and Economic Potential of the Sangong Mafic-Ultramafic Intrusion in the Eastern Tianshan, Central Asian Orogenic Belt: Constraints from Mineral, Whole-Rock, and PGE Geochemistry
The Sangong Cu-Ni sulfide mineralized mafic-ultramafic intrusion is located on the southern margin of the Bogeda-Harlik belt, eastern Tianshan,...
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Depth of the lithospheric mantle discontinuities beneath the northwest flank of Oku Volcanic Complex, Cameroon Volcanic Line: constraints from mantle xenolith and teleseismic data
In Northwestern Cameroon, the northwest flank of Oku Volcanic Complex forms part of the continental sector of the Cameroon Volcanic Line (CVL)....
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Petrology of ultramafic and mafic rocks from the South Andaman Ophiolite, Bay of Bengal: Evidence for an arc-related high-pressure origin
Minor ultramafic (dunite) and mafic (gabbroic) rock occurrences are exposed in South Andaman Island, Bay of Bengal. Dunite is in contact with...
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Metasomatized Xenoliths of Mantle Eclogites and Garnet Pyroxenites from the V. Grib Kimberlite, Arkhangelsk Province
We investigated mantle eclogite and garnet pyroxenite xenoliths from the V. Grib kimberlite located in the Arkhangelsk diamond province. The...
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First Discovery of a Nonophiolite-Type Spinel Lherzolite Xenolith in the Back-Arc Basin of the Mariana Island Arc System
AbstractThe first sampling of mantle horizons underlying the ophiolite peridotite complex of the Mariana back-arc basin was carried out based on a...
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Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano
The lithospheric mantle, formed at the mid-ocean ridge as a residue of crustal production, comprises theoretically depleted peridotite, but more...
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Mantle xenolith-bearing phonolites and basanites feed the active volcanic ridge of Mayotte (Comoros archipelago, SW Indian Ocean)
Since 2018, the submarine east flank of Mayotte Island (Comoros archipelago) is the site of a major eruption located at 3.5 km depth bsl on a WNW-ESE...
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Redox state of the Dharwar craton root as inferred from eclogite and peridotite sourced mantle cargo, with implications for kimberlite and lamproite magma formation
Despite over 400 occurrences of kimberlites and related rocks in India, mantle-derived xenoliths are known only from a few occurrences. This paucity...
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Amphibole-rich xenoliths from Devonian igneous rocks of the Pripyat rift, Southeastern Belarus: a window into cratonic lower-crust–upper-mantle boundary
To obtain new insights into the composition and geological history of the crust–mantle boundary beneath a continental rift, we have investigated a...
