Results 1 to 10 of about 3,752 (234)
Evidence of Enriched, Hadean Mantle Reservoir from 4.2-4.0 Ga zircon xenocrysts from Paleoarchean TTGs of the Singhbhum Craton, Eastern India [PDF]
Scientific Reports, 2018 Sensitive High-Resolution Ion Microprobe (SHRIMP) U-Pb analyses of zircons from Paleoarchean (~3.4 Ga) tonalite-gneiss called the Older Metamorphic Tonalitic Gneiss (OMTG) from the Champua area of the Singhbhum Craton, India, reveal 4.24-4.03 Ga ...
Trisrota Chaudhuri +4 more
doaj +4 more sources
Open Geosciences, 2015 Unusual mafic dykes occur in the proximity of the Ambadongar Carbonatite Complex, Lower Narmada Valley, Gujarat, India. The dykes contain dense population of quartz xenocrysts within the basaltic matrix metasomatised by carbonate-rich fluids. Plagioclase
Kirtikumar Randive, Vratislav Hurai
exaly +4 more sources
Retention of radiation damage in zircon xenocrysts from kimberlites, Northern Yakutia [PDF]
Lithos, 2014 We have studied zircon xenocrysts from Mesozoic kimberlites from the Kuoika and Ary-Mastakh fields in Northern Yakutia. Zircon xenocrysts are assumed to originate from crustal rocks. Our SHRIMP (Sensitive High mass Resolution Ion MicroProbe) analyses yielded predominantly concordant U-Th-Pb ages (up to ~. 3570.
Allen Kennedy +2 more
exaly +7 more sources
Transport, survival and modification of xenoliths and xenocrysts from source to surface [PDF]
Earth and Planetary Science Letters, 2020 Abstract A wide variety of magmas entrain, transport and erupt mantle material in the form of xenoliths and xenocrysts. The host magmas are often low viscosity in nature and range from basalt to more esoteric compositions such as kimberlite, nephelinite and basanite. Here we focus on kimberlite magmas which are particularly successful at transporting
David Sasse +2 more
semanticscholar +9 more sources
Minerals (Basel, Switzerland), 2023 Mantle metasomatism refers to the interaction between mantle melt, fluid, and mantle rock. It not only affects the physical and chemical properties of the lithospheric mantle but also plays an important role in the process of metal and gem mineralization.
Liqiang Yang, Wen-Yan He
exaly +3 more sources
Composition and spectroscopy of olivine xenocrysts from the Hawaiian tholeiitic basalts
Учёные записки Казанского университета: Серия Естественные науки, 2020 Tholeiitic basalts of the Hawaiian Mauna Loa and Kīlauea volcanoes (USA) contain olivine xenocrysts with chromespinelide inclusions. Their chemical composition and spectroscopic properties were investigated and compared with olivine of another ...
A.B. Makeyev +4 more
doaj +3 more sources
Geosciences (Switzerland)This paper presents the reconstruction of the architecture of the lithospheric mantle, including its thermal state and thickness, as well as the scale and efficiency of its sampling by four kimberlites from the Arkhangelsk diamondiferous province ...
Anna Dymshits +2 more
exaly +4 more sources
New Minerals from Inclusions in Corundum Xenocrysts from Mt. Carmel, Israel: Magnéliite, Ziroite, Sassite, Mizraite-(Ce) and Yeite. [PDF]
Materials (Basel), 2023 Our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mt. Carmel area, Israel has revealed seven IMA-approved new minerals since 2021. We report here four new oxide minerals and one new alloy mineral. Magnéliite (Ti3+2Ti4+
Ma C +4 more
europepmc +2 more sources
Zircon U-Pb geochronology and trace element dataset from the Southern Rocky Mountain Volcanic Field, Colorado, USA [PDF]
Data in Brief, 2022 This contribution provides in-situ LA-ICP-MS U-Pb ages and trace element determinations of zircons from dacitic to rhyolitic lavas, ignimbrites and intrusions in the Southern Rocky Mountain Volcanic Field (SRMVF) in Colorado, USA.
J.T. Sliwinski +5 more
doaj +2 more sources
Major element data, 40Ar/39Ar step-heating and step-crushing data for anorthoclase megacrysts from the Newer Volcanic Province, south-eastern Australia [PDF]
Data in Brief, 2018 We provide the dataset associated with the research article “40Ar/39Ar ages of alkali feldspar xenocrysts constrain the timing of intraplate basaltic volcanism” Matchan et al. [1].
E.L. Matchan +3 more
doaj +2 more sources