Results 71 to 80 of about 2,520 (206)

A record of magmatic differentiation in plutonic xenoliths from Santorini (Greece)

Volcanica
Plutonic xenoliths from volcanic arcs provide unique insights into transcrustal magmatic systems in subduction zone settings. At Santorini volcano in the Central Aegean Volcanic Arc (Greece), plutonic xenoliths occur throughout a sequence of lavas and ...
Sean Whitley, Ralf Halama, Ralf Gertisser, Thor H. Hansteen, Matthias Frische, Torsten Vennemann   +5 more
doaj   +1 more source

Allanite in Mantle Eclogite Xenoliths

Journal of Petrology
Abstract Rare-Earth Elements (REE) are key geochemical tracers of crust–mantle differentiation, but there are few direct data on REE-rich minerals in mantle rocks. Here, we report the combined petrography and comprehensive chemical and isotopic characterization of three coesite- and kyanite-bearing eclogite xenoliths from the Udachnaya ...
Denis S Mikhailenko, Sonja Aulbach, Aleksandr S Stepanov, Andrey V Korsakov, Le Zhang, Yi-Gang Xu   +5 more
openaire   +1 more source

Syn-volcanic melt-rock reactions recorded in peridotitic xenoliths from Scania, S Sweden

Mineralogia
Peridotite xenoliths from Scania (S Sweden), brought to the surface by Mesozoic basanitic magmas, provide insights into the lithospheric mantle underlying the East European Craton.
Kukuła Anna, Matusiak-Małek Magdalena, Mikrut Jakub, Ntaflos Theodoros, Johansson Leif   +4 more
doaj   +1 more source

A sheared garnet peridotite mantle xenolith from the Delitzsch Carbonatite Complex, Germany - Evidence for thickened Cretaceous lithosphere beneath Central Europe

[Artikel-Nr.: 108156] Sheared garnet peridotites occur in the deep lithosphere and record processes of deformation, melt interaction, and metasomatism along the lithosphere-asthenosphere boundary (LAB).
Bussweiler, Yannick, Hellers, Max, Möckel, Frank, Röper, Tobias, Münker, Carsten, Wombacher, Frank   +5 more
core   +1 more source

Mineral analyses and reconstructed bulk xenolith compositions for the Kaapvaal craton

EPMA & LA-ICP-MS mineral analyses and reconstructed bulk xenolith compositionsTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Gibson, S (via Mendeley Data)
core   +1 more source

Sub-Zero Alteration in an Isotopically Heavy Brine Preserved in a Pristine H Chondrite Xenolith [PDF]

, 2020
Introduction: Brecciated H chondrites host a variety of xenoliths, including unshocked, phyllo- silicate-rich carbonaceous chondrites (CCs). The brecciated H chondrite Zag (H3-6) is one of two chondrites to host macroscopic (1 - 5mm), xenolithic crystals
Zolensky, M. E., Huss, G. R., Nagashima, K., Frank, D. R.   +3 more
core  

How Cratonic Roots Survive With Weak Mid‐Lithosphere Discontinuities

Geophysical Research Letters
The stability of cratons has long been attributed to their neutral buoyancy and strong roots. However, recent seismic studies have revealed widespread mid‐lithospheric discontinuities (MLDs) within cratonic roots.
Qionghua Guo, Huilin Wang, Honglei Liu
doaj   +1 more source

Modes of Occurrence of Spinel in Xenoliths.,

The Journal of the Geological Society of Japan, 1949
During his petrological study on the inclusions in the garnet-biotite-andesite from Nijo Volcano near Osaka, the present writer pointed out the common occurrence of spinel associating intimately with porphyroblastic andalusite or sillimanite in some xenoliths derived from argillaceous metamorphic rock, as the feature to be observed in xenoliths when ...
openaire   +2 more sources

The Cordilleran lithosphere beneath south-central British Columbia : insights from two xenolith suites

, 2019
Mantle-derived peridotite xenoliths represent a valuable source of information about the structure, chemistry, origin, and evolution of the mantle lithosphere underlying various tectonic environments. Xenolith-bearing volcanic suites at Mt.
Kroner, Ryan Keith
core   +1 more source

Genesis and karst characteristics of marble agglomerate in volcanic rocks on the eastern slope of Wutong Mountain, Shenzhen

Carsologica Sinica
Karst phenomena, such as fissures and caves, occur in the marble agglomerate of pyroclastic rocks on the eastern slope of Shenzhen’s Wutong Mountain. These features have affected the engineering projects such as subway construction and pile foundation ...
Xiaohu WANG, Ping WANG, Xianneng WANG, Anfeng LAI   +3 more
doaj   +1 more source