Results 91 to 100 of about 5,424 (219)

A preliminary report on the mineralogy of the Tundulu and Songwe carbonatite complexes, Malawi [PDF]

open access: yes, 1988
A group of samples from the Tundulu and Songwe carbonatite complexes in Malawi, supplied by Dr. Appleton, have been studied by various mineralogical techniques.
Styles, M.T.
core  

MAGMATIC SOURCES OF THE EVOLVING CONTINENTAL TECTONOSPHERE IN INDIA: GENERATION OF ALKALINE IGNEOUS COMPLEXES WITH CARBONATITES IN THE SAMALPATTI (SOUTHERN INDIA) AND AMBA DONGAR (WESTERN INDIA) MASSIFS

open access: yesГеодинамика и тектонофизика
Neoproterozoic Samalpatti and Cretaceous-Paleogene Amba Dongar massifs are considered to evaluate the change of sources of carbonatite magmatism in evolving tectonosphere of India. The inherited character of Ba and Sr distribution components is traced in
S. V. Rasskazov   +4 more
doaj   +1 more source

Studies in synthetic carbonatite systems: Solidus relationships for CaO-MgO-CO_2-H_2O to 40 kbar and CaO-MgO-SiO_2-CO_2-H_2O to 10 kbar [PDF]

open access: yes, 1980
The system CaO-MgO-SiO_2-CO_2-H_2O is an important model for many igneous and metamorphic processes, including the generation and differentiation of carbonatite and associated silicate magmas.
Boettcher, A. L.   +2 more
core  

Oxygen–Carbon and Strontium Isotope Composition in Primary Carbonatites of the World: The Data Summary and Linear Trends

open access: yesРуды и металлы
A statistical regression analysis was performed of a summary of borrowed literary iso- topic data on 176 carbonatite occurrences worldwide (a total of 1829 paired δ18О-δ13С values in primary carbonatites).
Bolonin A. V.
doaj   +1 more source

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

open access: yesGeochemical Perspectives Letters, 2021
J. Sun   +12 more
openaire   +1 more source

Influencia del F en la distribución de Nb, Ta y REE en las lavas carbonatíticas de Catanda, Angola [PDF]

open access: yes, 2012
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura   +6 more
core  

Carbonatites in skarn objects of the Urals

open access: yesЛитосфера, 2017
The temperature range of the formation of skarns suggests the melting of limestones in the heat-and-mass transfer columns of the Earth’s crust. The ontogenic analysis of structures of the carbonate rocks in some Ural skarn objects indicates the presence ...
V. A. Popov
doaj   +2 more sources

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