Results 21 to 30 of about 22,040 (302)

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V., Downes, Hilary, Hock, V., Lazarov, M., Prelevic, D.   +4 more
core   +1 more source

How is carbonate crust digested by magma?

Frontiers in Earth Science, 2023
Magma’s volatile budget depends on deep magmatic sources, the degree of differentiation and degassing conditions, and volatile input from the assimilated crust.
Anastassia Y. Borisova, Wendy A. Bohrson
doaj   +1 more source

The lithospheric mantle and lower crust-mantle relationships under Scotland: a xenolithic perspective [PDF]

, 2011
In the British Isles the majority of volcanic rocks containing upper mantle and lower crustal xenoliths occur in Scotland. Most of the occurrences are of Carboniferous–Permian age.
Arai, B.G.J. Upton, Bonadiman, C. Bonadiman, Greenbaum, Griffin, H. Downes, Irving, Johnson, Kirstein, L.A. Kirstein, Larsen, Macdonald, McDonough, Menzies, P.G. Hill, Singh, T. Ntaflos   +17 more
core   +1 more source

THE NATURE OF ULTRAMAFIC XENOLITHS IN THE BASALTS OF LANZAROTE ISLAND (CANARY ARCHIPELAGO)

Геодинамика и тектонофизика, 2022
Mineralogical and geochemical study was performed on peridotite xenolith hosted by amygdaline basalts of Lanzarote Island (Canary archipelago). Their modal composition corresponds to harzburgite.
V. A. Krylova, I. F. Gertner, G. Gutiérrez-Alonso   +2 more
doaj   +1 more source

Transport and eruption of mantle xenoliths creates a lagging problem

Communications Earth & Environment, 2023
Mantle-derived xenoliths entrained by low viscosity magmas indicate transport through great thicknesses of orogenic (≲50-80 km) and cratonic ( $$\lesssim$$ ≲ 20 km) mantle lithosphere.
James K. Russell, Thomas J. Jones
doaj   +1 more source

Imprints of modal metasomatism in the post-Deccan subcontinental lithospheric mantle: petrological evidence from an ultramafic xenolith in an Eocene lamprophyre, NW India

Special Publications, 2017
We report here on the occurrence of an interesting mantle-derived ultramafic xenolith entrained in an Eocene (c. 55 Ma) lamprophyre dyke from the Dongargaon area of the Chhotaudepur alkaline subprovince located within the Narmada Rift Zone, NW India. The
R. Pandey, N. C. Rao, D. Pandit, S. Sahoo, P. Dhote   +4 more
semanticscholar   +1 more source

Petrography and petrology of the Hawaii Scientific Drilling Project lavas: Inferences from olivine phenocryst abundances and compositions [PDF]

, 1996
The Mauna Loa (ML) and Mauna Kea (MK) lavas recovered by the Hawaii Scientific Drilling Project (HSDP) include aphyric to highly olivine-phyric basalts.
Alves, Sophie, Baker, Michael B., Stolper, Edward M.   +2 more
core   +1 more source

Magmatic processes in developing oceanic crust revealed in a cumulate xenolith collected at the East Pacific Rise, 9°50′N

Geochemistry, Geophysics, Geosystems, 2006
Michael R Perfit
exaly   +2 more sources

Whole rock and mineral chemistry of hornblenditic xenoliths in volcanic alkaline rocks from the northern part of Uromieh Dokhatar magmatic belt (NW Iran)

Comptes Rendus. Géoscience, 2021
An alkaline volcanic activity with a relative Plio-Quaternary age (based on the succession of layers on the field) occurred in the northern part of Uromieh Dokhatar magmatic belt, Iran.
Khezerlou, Ali Akbar, Grégoire, Michel, Amel, Nasir, Moayyed, Mohsen, Jahangiri, Ahmad, Kilzi, Mohammad   +5 more
doaj   +1 more source

The composition and distribution of the rejuvenated component across the Hawaiian plume: Hf‐Nd‐Sr‐Pb isotope systematics of Kaula lavas and pyroxenite xenoliths

Geochemistry, Geophysics, Geosystems, 2013
Rejuvenated volcanism refers to the reemergence of volcanism after a hiatus of 0.5–2 Ma following the voluminous shield building stage of Hawaiian volcanoes.
Michael Bizimis, Vincent J. M. Salters, Michael O. Garcia, Marc D. Norman   +3 more
doaj   +1 more source