Results 61 to 70 of about 28,848 (258)

Glass from Teniky (Madagascar): Geochemical Evidence for Multiple Production Systems and Long‐Distance Exchange in the Mediaeval Indian Ocean

open access: yesArchaeometry, EarlyView.
ABSTRACT The inland rock‐cut site of Teniky, located in the Isalo massif of southern Madagascar, represents an exceptional archaeological context recently dated to the 11th–12th centuries ad, corresponding to the early phases of settlement on the island.
Jean Rodier   +2 more
wiley   +1 more source

Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics [PDF]

open access: yes, 2006
Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Wilson, M., Downes, Hilary
core   +3 more sources

Petrology, Geochemical Characteristics, Tectonic Setting, and Implications for Chromite and PGE Mineralization of the Hongshishan Alaskan-Type Complex in the Beishan Orogenic Collage, North West China

open access: yesFrontiers in Earth Science, 2021
The Hongshishan mafic-ultramafic complex is situated in the north of the Beishan orogenic collage and the southern part of the Central Asian Orogenic Belt.
Zhaolin Wang   +7 more
doaj   +1 more source

The energetics of melting fertile heterogeneities within the depleted mantle [PDF]

open access: yes
To explore the consequences of mantle heterogeneity for primary melt production, we develop a mathematical model of energy conservation for an upwelling, melting body of recycled oceanic crust embedded in the depleted upper mantle.
Katz, R. F., Rudge, John F.
core   +1 more source

Carbonation of Peridotite in The Oman Ophiolite [PDF]

open access: yes, 2014
The formation of carbonate minerals during alteration of ultramafic rocks represents a geological analogue of mineral carbon sequestration. In the Oman Ophiolite, these carbonation reactions are manifested in (1) active, on-going low-temperature systems ...
Falk, Elisabeth
core   +1 more source

Xiyang-Pingding peridotite xenoliths

open access: yes, 2022
Geochemical data for peridotite xenoliths hosted by the Cenozoic Xiyang-Pingding basalts in the central North China Craton.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Xu, Y (via Mendeley Data)
core   +1 more source

Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano

open access: yesProgress in Earth and Planetary Science, 2022
The lithospheric mantle, formed at the mid-ocean ridge as a residue of crustal production, comprises theoretically depleted peridotite, but more fertile components (e.g., lherzolite and pyroxenite) have been reported, creating an enigmatic picture of the
Kazuto Mikuni   +7 more
doaj   +1 more source

The Role of Peridotite for Oceanic Volcanism

open access: yesGeochemistry, Geophysics, Geosystems
The complementary products of oceanic crust formation are compositionally variable melt‐depleted peridotites. Together with the oceanic crust, the melt‐depleted peridotites are continuously recycled back into the mantle.
Andreas Stracke, Vincent J. M. Salters
doaj   +1 more source

Re-os isotope constraints on the age of the Lithospheric mantle beneath western Greenland. [PDF]

open access: yes, 2007
Alkaline magmatic activity across Western Greenland (W.G.) provides a record of lithosphere evolution over the last 600 Ma. Ultra Mafic Lamprophyre (UML) magmatism in particular has erupted an exceptional inventory of mantle xenoliths allowing a detailed
Webb, Michelle
core  

Machine Learning Reveals Source Compositions of Intraplate Basaltic Rocks

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Recycling of crustal material is thought to introduce pyroxenite to the peridotite mantle. Mapping such lithological heterogeneity within the mantle is crucial to understanding the mantle's chemical evolution but remains challenging.
Peng Guo   +3 more
doaj   +1 more source

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