Results 51 to 60 of about 388 (174)

Ediacara Obscura: Unveiling Hidden Magnetisations in the Fen Complex, Southern Norway

Geochemistry, Geophysics, Geosystems
Paleomagnetic directions found in Ediacaran (635–539 Ma) rocks are widely dispersed, which has led to conflicting hypotheses about tectonic regimes and geomagnetic field behavior during this period, and raised doubts about the fidelity of the ...
Justin A. D. Tonti‐Filippini, Paul Y. J. Antonio, Sven Dahlgren, Rosa deBoer, Leandro Gallo, Petter Silkoset, Bertwin deGroot, Lennart deGroot, Mathew Domeier   +8 more
doaj   +1 more source

Plumes - a new word in Geology of the Urals

Литосфера, 2018
Subject. The ideas of plume tectonics became active and developing only several years later than the theory of plate tectonics. But in the Urals, the question of plume tectonics, contrary to plate tectonics, was not raised, with rare exceptions, until ...
Victor N Puchkov
doaj   +1 more source

MICA COMPOSITION REFLECTING CONDITIONS OF AILLIKITE FORMATION IN ZIMA COMPLEX OF EASTERN SIBERIA

Геодинамика и тектонофизика
Four types of mica were identified in the macrocryst and fine porphyry aillikites from the Yarma zone of the Urik-Ija graben considering specific features of morphology, chemical composition, zonation and crystallization conditions.
V. B. Savelyeva, Yu. V. Danilova, E. P. Bazarova, B. S. Danilov, E. A. Khromova   +4 more
doaj   +1 more source

NEW DATA ON PYROCHLORE FROM THE TATARKA DEPOSIT (YENISEI RIDGE, RUSSIA) [PDF]

Минералогия, 2017
Large pyrochlore crystals (up to 6 cm) from ores of the Tatarka deposit are studied, as well as their compositional zoning and relations with associated minerals.
V.I. Popova, P.S. Kozlov, A.V. Lapin, V.A. Popov, V.A. Kotllyarov, L.A. Pautov, M.A. Rassomakhin, V.V. Shilovskikh, I.A. Blinov   +8 more
doaj  

Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil)

Anais da Academia Brasileira de Ciências, 2001
The Araxá complex (16 km²) comprises carbonatites forming a central core and a complex network of concentric and radial dykes as well as small veins; additionally, it includes mica-rich rocks, phoscorites and lamprophyres.
GIANBOSCO TRAVERSA, CELSO B. GOMES, PIERO BROTZU, NICOLETTA BURAGLINI, LUCIO MORBIDELLI, MARIA SPERANZA PRINCIPATO, SARA RONCA, EXCELSO RUBERTI   +7 more
doaj   +1 more source

MINERALOGY AND ZIRCON AGE OF CARBONATITES OF THE SREDNYAYA ZIMA COMPLEX (EASTERN SAYAN)

Геодинамика и тектонофизика
The Srednyaya Zima alkaline-ultramafic carbonatite complex is located in the Eastern Sayan and is a part of the area of manifestation of Neoproterozoic rare-metal alkaline-carbonatite magmatism along the southern and southeastern margins of the Siberian ...
I. R. Prokopyev, A. G. Doroshkevich, M. D. Varchenko, D. V. Semenova, I. A. Izbrodin, M. N. Kruk   +5 more
doaj   +1 more source

Transition from carbonatitic magmas to hydrothermal brines: Continuous dilution or fluid exsolution? [PDF]

Sci Adv, 2023
Yuan X, Zhong R, Xiong X, Gao J, Ma Y.
europepmc   +1 more source

Ca isotope systematics of carbonatites: Insights into carbonatite source and evolution [PDF]

Geochemical Perspectives Letters, 2021
J. Sun, X.-K. Zhu, N.S. Belshaw, W. Chen, A.G. Doroshkevich, W.-J. Luo, W.-L. Song, B.-B. Chen, Z.-G. Cheng, Z.-H Li, Y. Wang, J. Kynicky, G.M. Henderson   +12 more
openaire   +1 more source

Reply to: Silica is unlikely to be soluble in upper crustal carbonatite melts. [PDF]

Nat Commun, 2023
Berndt J, Klemme S.
europepmc   +1 more source

Detection and Relative Quantification of Neodymium in Sillai Patti Carbonatite Using Decision Tree Classification of the Hyperspectral Data. [PDF]

Sensors (Basel), 2022
Qasim M, Khan SD.
europepmc   +1 more source