Helium isotopic heterogeneity within single diamonds from the Orapa kimberlite pipe

RUTILE-DIAMOND INTERGROWTHS FROM UDACHNAYA KIMBERLITE PIPE (YAKUTIA)

Mineralogical Journal ◽

10.15407/mineraljournal.39.03.017 ◽

2017 ◽

Vol 39 (3) ◽

pp. 17-31

Author(s):

V. Kvasnytsya ◽

◽

O. Vyshnevskyi ◽

Keyword(s):

Kimberlite Pipe

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UNUSUAL INCLUSIONS IN DIAMONDS FROM THE ECLOGITE OF THE UDACHNAYA KIMBERLITE PIPE (YAKUTIA): NEW DATA ON THE NATURE OF MANTLE METASOMATISM

10.1130/abs/2018am-319122 ◽

2018 ◽

Author(s):

A.M. Logvinova ◽

◽

L.N. Pokhilenko ◽

R. Wirth ◽

T.А. Bul'bak ◽

...

Keyword(s):

Kimberlite Pipe ◽

Mantle Metasomatism

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Extreme isotopic heterogeneity in Samoan clinopyroxenes constrains sediment recycling

Nature Communications ◽

10.1038/s41467-021-21416-9 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Jenna V. Adams ◽

Matthew G. Jackson ◽

Frank J. Spera ◽

Allison A. Price ◽

Benjamin L. Byerly ◽

...

Keyword(s):

Mantle Source ◽

Magma Mixing ◽

Major And Trace Elements ◽

Mantle Heterogeneity ◽

Isotopic Data ◽

Nd Isotopes ◽

Isotopic Heterogeneity ◽

Total Variability ◽

High Silica ◽

Insight Into

AbstractLavas erupted at hotspot volcanoes provide evidence of mantle heterogeneity. Samoan Island lavas with high 87Sr/86Sr (>0.706) typify a mantle source incorporating ancient subducted sediments. To further characterize this source, we target a single high 87Sr/86Sr lava from Savai’i Island, Samoa for detailed analyses of 87Sr/86Sr and 143Nd/144Nd isotopes and major and trace elements on individual magmatic clinopyroxenes. We show the clinopyroxenes exhibit a remarkable range of 87Sr/86Sr—including the highest observed in an oceanic hotspot lava—encompassing ~30% of the oceanic mantle’s total variability. These new isotopic data, data from other Samoan lavas, and magma mixing calculations are consistent with clinopyroxene 87Sr/86Sr variability resulting from magma mixing between a high silica, high 87Sr/86Sr (up to 0.7316) magma, and a low silica, low 87Sr/86Sr magma. Results provide insight into the composition of magmas derived from a sediment-infiltrated mantle source and document the fate of sediment recycled into Earth’s mantle.

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A steady state conductive geotherm for the north central Slave, Canada: Inversion of petrological data from the Jericho Kimberlite pipe

Journal of Geophysical Research Atmospheres ◽

10.1029/1999jb900012 ◽

1999 ◽

Vol 104 (B4) ◽

pp. 7089-7101 ◽

Cited By ~ 50

Author(s):

James K. Russell ◽

Maya G. Kopylova

Keyword(s):

Steady State ◽

Kimberlite Pipe ◽

North Central ◽

The North

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Diffusion gradients in an eclogite xenolith from the Roberts Victor kimberlite pipe: (2) kinetics and implications for petrogenesis

Contributions to Mineralogy and Petrology ◽

10.1007/bf00306530 ◽

1990 ◽

Vol 105 (6) ◽

pp. 637-649 ◽

Cited By ~ 26

Author(s):

Violaine Sautter ◽

Ben Harte

Keyword(s):

Kimberlite Pipe ◽

Eclogite Xenolith

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Primary hydrocarbon inclusions in garnet of diamondiferous eclogite from the Udachanaya kimberlite pipe, Yakutia

Doklady Earth Sciences ◽

10.1134/s1028334x09040412 ◽

2009 ◽

Vol 426 (1) ◽

pp. 695-698 ◽

Cited By ~ 21

Author(s):

A. A. Tomilenko ◽

S. V. Kovyazin ◽

L. N. Pokhilenko ◽

N. V. Sobolev

Keyword(s):

Kimberlite Pipe

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Nb-rutile from eclogite microxenolith of the Zagadochnaya kimberlite pipe

Doklady Earth Sciences ◽

10.1134/s1028334x11070099 ◽

2011 ◽

Vol 439 (1) ◽

pp. 970-973 ◽

Cited By ~ 11

Author(s):

N. V. Sobolev ◽

A. M. Logvinova ◽

Yu. G. Lavrent’ev ◽

N. S. Karmanov ◽

L. V. Usova ◽

...

Keyword(s):

Kimberlite Pipe

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Age and Composition of Zircons From the Devonian Petrivske Kimberlite Pipe of the Azov Domain, the Ukrainian Shield

Mineralogical Journal ◽

10.15407/mineraljournal.43.04.050 ◽

2021 ◽

Vol 43 (4) ◽

pp. 50-55

Author(s):

L.V. SHUMLYANSKYY ◽

V. KAMENETSKY ◽

B.V. BORODYNYA

Keyword(s):

Trace Elements ◽

Trace Element ◽

Continental Crust ◽

Kimberlite Pipe ◽

Zircon Crystal ◽

Precambrian Rock ◽

Weighted Mean ◽

Terrigenous Rocks ◽

Devonian Age ◽

Isotope Systematics

Results of a study of U-Pb and Hf isotope systematics and trace element concentrations in five zircon crystals separated from the Devonian Petrivske kimberlite are reported in the paper. Four zircons have yielded Paleoproterozoic and Archean ages, while one zircon grain gave a Devonian age of 383.6±4.4 Ma (weighted mean 206Pb/238U age). The Precambrian zircons have been derived from terrigenous rocks of the Mykolaivka Suite that is cut by kimberlite, or directly from the Precambrian rock complexes that constitute continental crust in the East Azov. The Devonian zircon crystal has the U-Pb age that corresponds to the age of kimberlite emplacement. It is 14 m.y. younger than zircon megacrysts found in the Novolaspa kimberlite pipe in the same area. In addition, Petrivske zircon is richer in trace elements than its counterparts from the Novolaspa pipe. Petrivske and Novolaspa zircons crystallized from two different proto-kimberlite melts, whereas the process of kimberlite formation was very complex and possibly included several episodes of formation of proto-kimberlite melts, separated by extended (over 10 M.y.) periods of time.

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