Results 11 to 20 of about 147 (81)

Links between Calcite Kimberlite, Aillikite and Carbonatite in West Greenland: Numeric Modeling of Compositional Relationships [PDF]

Journal of Petrology
AbstractTextural, mineralogical and mineral compositional observations in a suite of Neoproterozoic aillikite and calcite kimberlite dykes from southern West Greenland point to consistent variations in melt major element compositions amongst these silica-undersaturated magma types.
L H Pilbeam, T F D Nielsen, T Waight, S Tappe   +3 more
openaire   +3 more sources

Supplemental Material: Water contents and hydrogen isotope compositions of amphibole in aillikites from the Tarim large igneous province, NW China: Insight into Earth’s deep water cycle

, 2023
<p>Supplemental Tables S1–S7.</p>
null et al., Zhaochong Zhang, null Wang Chang Hong   +2 more
openaire   +2 more sources

Petrogenesis of a newly discovered ∼1.1 Ga aillikite, carbonate-rich kimberlite, and carbonatite association on the northern margin of the Mid-continental Rift System, Ontario, Canada

Precambrian Research
In this study, we present new field, petrographic, and whole-rock major and trace element, and Nd–Pb–Sr radiogenic isotope data for a newly discovered aillikite, carbonate-rich kimberlite, and carbonatite association on the northern shore of Lake ...
Irmak Yılmaz, Ali Polat, Joel Gagnon, Robert Frei, Peter Jobin   +4 more
openaire   +2 more sources

The mantle of Scotland viewed through the Glen Gollaidh aillikite [PDF]

Mineralogy and Petrology, 2018
The Glen Gollaidh aillikite dyke (58.36741°N 4.69751°W), N.W. Scotland, occurs within the Neoproterozoic sedimentary rocks of the Moine Supergroup ~4 km east of the Moine Thrust. Phlogopite 40Ar/36Ar measurements give a late Devonian maximum emplacement age of 360.3 ± 4.9 (2σ) Ma. This age occurs in a quiet period of Scottish magmatic history c.
Hutchison, Mark T., Faithfull, John W., Barfod, Dan N., Hughes, Joshua W., Upton, Brian G.J.   +4 more
openaire   +3 more sources

Erratum to: U–Pb (ID-TIMS) Age of Garnet from Aillikites of the Kola Alkali Province

Doklady Earth Sciences, 2023
An Erratum to this paper has been published: https://doi.org/10.1134 ...
M. V. Stifeeva, E. B. Salnikova, A. A. Nosova, A. B. Kotov, A. A. Voznyak, D. A. Dimitrova   +5 more
openaire   +1 more source

The Newly Discovered Neoproterozoic Aillikite Occurrence in Vinoren (Southern Norway): Age, Geodynamic Position and Mineralogical Evidence of Diamond-Bearing Mantle Source [PDF]

Minerals, 2020
During the period 750–600 Ma ago, prior to the final break-up of the supercontinent Rodinia, the crust of both the North American Craton and Baltica was intruded by significant amounts of rift-related magmas originating from the mantle. In the Proterozoic crust of Southern Norway, the 580 Ma old Fen carbonatite-ultramafic complex is a representative of
Dmitry R. Zozulya, Kåre Kullerud, Enrico Ribacki, Uwe Altenberger, Masafumi Sudo, Yevgeny E. Savchenko   +5 more
openaire   +1 more source

Hydrogen Concentrations and He Isotopes in Olivine From Ultramafic Lamprophyres Provide New Constraints on a Wet Tarim Plume and Earth's Deep Water Cycle

, 2022
International audienceWater enters Earth's mantle via subduction of hydrated oceanic slab and largely returns to the ocean-atmosphere system through arc volcanism.
Andrea Giuliani, Xiaoping Xia, Zhang, Wanfeng, Catherine Thoraval, Giuliani, Andrea, Lukáš Krmíček, Wanfeng Zhang, Zhang, Zhaochong, Zhaochong Zhang, Krmíček, Lukáš, Bo, Hongze, Wang, Changhong, Thoraval, Catherine, Demouchy, Sylvie, Hongze Bo, Sylvie Demouchy, Xia, Xiaoping, Changhong Wang   +17 more
core   +1 more source

Petrogenesis of Ultramafic Lamprophyres from the Terina Complex (Chadobets Upland, Russia): Mineralogy and Melt Inclusion Composition

, 2020
The mineral composition and melt inclusions of ultramafic lamprophyres of the Terina complex were investigated. The rocks identified were aillikites, mela-aillikites, and damtjernites, and they were originally composed of olivine macrocrysts and ...
Ilya Prokopyev, Vladislav Potapov, Anastasiya Starikova, Yazgul Nugumanova, Anna Doroshkevich   +4 more
core   +1 more source

Between carbonatite and lamproite—Diamondiferous Torngat ultramafic lamprophyres formed by carbonate-fluxed melting of cratonic MARID-type metasomes [PDF]

, 2008
New U–Pb perovskite ages reveal that diamondiferous ultramafic lamprophyre magmas erupted through the Archean crust of northern Labrador and Quebec (eastern Canada) between ca.
Tappe, Sebastian, Foley, Stephen F., Strackle, Andreas, Romer, Rolf L., Kjarsgaard, Bruce A., Jenner, George A., Heaman, Larry M.   +6 more
core   +1 more source

Alkaline mafic and ultramafic lamprophyres from the Aillik Bay area, Labrador.

, 1986
The Aillik Bay lamprophyre dyke swarm comprises abundant sannaites, plus rarer olivine sannaites, aillikites and carbonatites. Sannaites are characterized by phenocrysts of Ti-Al titansalite plus rare olivine and phlogopite in a groundmass dominated by ...
J. Malpas, S. F. Foley, King, AF, A. F. King, Foley, SF, Malpas, J   +5 more
core   +1 more source