Results 1 to 10 of about 112,950 (202)

A global mantle xenolith bulk-rock and paired-mineral dataset [PDF]

Scientific Data
This data descriptor presents a globally compiled dataset of major element concentrations for mantle peridotite and pyroxenite xenoliths. The dataset includes whole-rock analyses, constituent mineral compositions, manually collated sample ages, and ...
Ben Qin, Tao Sun, Litong Li, Dongya Zou
doaj   +2 more sources

Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt [PDF]

Communications Earth & Environment
The extreme geochemical enrichment of post-collisional potassium-rich lava in the Alpine-Himalayan orogenic belt has led researchers to hypothesize that enrichment is inherited from a metasomatized mantle source potentially incorporating crustal ...
Weikai Li, Zhiming Yang, Zoltán Zajacz, Limin Zhou, Zengqian Hou   +4 more
doaj   +2 more sources

Nanoscale solid-fluid interaction and amphibole formation in the lithospheric mantle [PDF]

Scientific Reports
Nanoscale amphibole nucleation and growth in the Earth’s mantle is poorly understood despite its important role in the evolution and stability of the lithosphere, along with its influence on the coexisting fluid composition.
Thomas Pieter Lange, Mihály Pósfai, Márta Berkesi, Péter Pekker, Zsófia Pálos, Gábor Molnár, Csaba Szabó, István János Kovács   +7 more
doaj   +2 more sources

Abiotic polycyclic aromatic hydrocarbons originating from the sub-oceanic mantle [PDF]

Scientific Reports
Experimental studies have demonstrated that petroleum may form from abiotic organic compounds synthesised in the Earth’s upper mantle. However, the most direct evidence of mantle-derived organics, as obtained from whole-rock analyses, indicates ambiguous
Itaru Mitsukawa, Akira Miyake, Yohei Igami, Tetsu Kogiso, Norikatsu Akizawa, Junya Matsuno, Megumi Matsumoto, Akira Tsuchiyama, Kentaro Uesugi, Masahiro Yasutake, Tomoki Taguchi, Yoshio Takahashi, Shohei Yamashita, Shota Okumura   +13 more
doaj   +2 more sources

Origins of Carbon and Nitrogen in Mantle Xenolith

Journal of Geography (Chigaku Zasshi), 2015
Yoshinori Takano, Naohiko Ohkouchi
exaly   +3 more sources

Carbonatite Versus Silicate Melt Metasomatism Impacts Grain Scale 87Sr/86Sr and 143Nd/144Nd Heterogeneity in Polynesian Mantle Peridotite Xenoliths

Geochemistry, Geophysics, Geosystems, 2021
The Earth's upper mantle is isotopically heterogeneous over large lengthscales, but the lower limit of these heterogeneities is not well quantified. Grain scale trace elemental variability has been observed in mantle peridotites, which suggests that ...
Benjamin L. Byerly, M. G. Jackson, M. Bizimis   +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

Mantle and Crustal Xenoliths in a Tephriphonolite From La Palma (Canary Islands): Implications for Phonolite Formation at Oceanic Island Volcanoes

Frontiers in Earth Science, 2022
The occurrence of mantle-derived peridotite xenoliths in phonolitic melts is a rare phenomenon, and is commonly ascribed to a mantle origin of the phonolite.
Andreas Klügel, Elmar Albers, Thor H. Hansteen   +2 more
doaj   +1 more source

Mantle Xenoliths

Geologiska Föreningen i Stockholm Förhandlingar, 1989
Mantle Xenoliths, edited by Peter H. Nixon, provides a valuable summary of both the state of our knowledge of mantle xenoliths and the current interpretations of them. It is generally well edited and surprisingly well integrated for a large, multiauthored volume.Useful integrating features include introductory sections (by Nixon) an d a summary chapter
  +5 more sources

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