Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres [PDF]
Scientific Reports, 2023 The Chadobets alkaline-carbonatite complex (Siberian craton) is a natural laboratory for all varieties of ultramafic lamprophyres, including damtjernites formed by fluid-explosion mechanisms, which contain a large number of pelletal lapilli.
Ilya Prokopyev +5 more
doaj +4 more sources
Petrology, Age, and Rift Origin of Ultramafic Lamprophyres (Aillikites) at Mount Webb, a New Alkaline Province in Central Australia [PDF]
Geochemistry, Geophysics, Geosystems, 2023 Diamond exploration over the past decade has led to the discovery of a new province of kimberlitic pipes (the Webb Province) in the Gibson Desert of central Australia.
Corinne Frigo +2 more
exaly +7 more sources
New Geochemical and Sr-Nd-Hf Isotopic Constraints on the Genesis of Kimberlites and Ultramafic Lamprophyres From the Adelaide Fold Belt and Gawler Craton, South Australia [PDF]
Mineralogy and PetrologyUNLABELLED: This study investigates the geochemical and isotopic characteristics of Jurassic kimberlites and ultramafic lamprophyres (UMLs) from four clusters within the Adelaide Fold Belt (AFB) and two within the Gawler Craton in South Australia ...
Andrea Giuliani, Hayden Dalton
exaly +3 more sources
Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres: A new type of “melt inclusions” [PDF]
Minerals, 2023 Abstract The Chadobets alkaline-carbonatite complex (Siberian craton) is a natural laboratory for all varieties of ultramafic lamprophyres, including damtjernites formed by fluid-explosion mechanisms, which contain a large number of pelletal lapilli.
Ilya Prokopyev +5 more
core +4 more sources
COMPOSITION OF SPINEL GROUP MINERALS FROM LATE PROTEROZOIC ULTRAMAFIC LAMPROPHYRES OF THE BOLSHETAGNINSKII ALKALINE ULTRAMAFIC CARBONATITE COMPLEX LOCATED AT THE URIK-IYA GRABEN, EASTERN SAYAN REGION [PDF]
Геодинамика и тектонофизика, 2022 This paper provides the results on spinel sampled from ailikites of the Bolshetagninskii massif of the East Sayan region. The study aimed to determine the history of formation of ultramafic lamprophyres of the Ziminsky complex. Spinel from three dikes of
Ya. N. Nugumanova, A. G. Doroshkevich
doaj +2 more sources
ISOTOPE COMPOSITION OF CARBON AND OXYGEN IN CALCITES OF ALKALINE ULTRAMAPHIC DYKES WITHIN THE URIK-IYA GRABEN [PDF]
Геодинамика и тектонофизика, 2022 The isotope composition of carbon and oxygen was studied in calcite of dykes and veins of ultramafic lamprophyres, kimberlite, alkaline mica picrites from the Yarma above-intrusion zone, and pyroxene-free picrites intruding the rocks of the ...
Yu. V. Danilova +4 more
doaj +2 more sources
New insights from field observations of the Younger giant dyke complex and mafic lamprophyres of the Gardar Province on Tuttutooq island, South Greenland [PDF]
GEUS Bulletin, 2021 The Gardar Province of south Greenland is defined by the products of alkaline igneous magmatism during the Mesoproterozoic. The most laterally extensive Gardar intrusions are a series of giant dyke complexes best exposed on the Tuttutooq archipelago.
Lot Koopmans +6 more
doaj +2 more sources
Journal of Petrology, 2022 Abstract In this study, we discuss mineral chemistry data, melt inclusion study results, and report Ar–Ar phlogopite age for the aillikite dikes of the Arbarastakh alkaline-carbonatite complex on the Aldan-Stanovoy shield, Russia. Aillikite was crystallized at 631 ± 8.5 Ma, coeval with the intrusion age of the Arbarastakh rocks.
Anastasia E Starikova +2 more
exaly +2 more sources
Journal of Petrology, 2019 Abstract Kimberlites are often closely associated, both in time and space, with a wide variety of alkaline ultramafic rock types, yet the question of a genetic relationship between these rock types remains uncertain. One locality where these relationships can be studied within the same cluster is the Karelian craton in Finland.
David Phillips +2 more
exaly +2 more sources
Геодинамика и тектонофизика, 2022 The mineralogical and geochemical features, as well as the sequence of formation of aillikite and calcite carbonatite (CC) with pyrochlore are described for the massif of alkaline ultramafic carbonatite complexes Belaya Zima located in East Siberia ...
S. M. Zhmodik +5 more
doaj +1 more source