Results 11 to 20 of about 7,693 (174)

Size and Composition of the MORB+OIB Mantle Reservoir

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Most efforts to characterize the size and composition of the mantle that complements the continental crust have assumed that the mid‐ocean ridge basalt (MORB) source is the incompatible‐element depleted residue of continental crust extraction. The use of
A. W. Hofmann, C. Class, S. L. Goldstein
doaj   +2 more sources

Zinc isotope evidence for extensive carbonate recycling in the Arctic asthenosphere [PDF]

open access: yesNature Communications
Carbon in the asthenosphere is unevenly distributed, reflecting interactions between the depleted mantle and materials added by plumes or subducting slabs.
Wei-Qi Zhang   +11 more
doaj   +2 more sources

The presence of ancient subducted oceanic crust contributes to seismic anomalies in Large Low Shear Velocity Provinces [PDF]

open access: yesCommunications Earth & Environment
Large Low Shear Velocity Provinces (LLSVPs) near the core-mantle boundary (CMB) are key yet enigmatic structures. Their origin is often linked to the accumulation of subducted mid-ocean ridge basalt (MORB), but computational models question MORB as the ...
Ewa Krymarys   +3 more
doaj   +2 more sources

K/U of the MORB Source and Silicate Earth [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2020
AbstractPotassium (K) informs on the radiogenic heat production, atmospheric composition, and volatile element depletion of the Earth and other planetary systems. Constraints on the abundance of K in the Earth, Moon, and other rocky bodies have historically hinged on K/U values measured in planetary materials, particularly comparisons of the ...
Benjamin Farcy   +2 more
exaly   +2 more sources

Phase Diagrams of Carbonate Materials at High Pressures, with Implications for Melting and Carbon Cycling in the Deep Earth

open access: yesGeophysical Monograph Series, Page 137-165., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov   +3 more
wiley  

+5 more sources

Mineral Chemistry and Whole-rock Geochemistry of Pillow lava from the Arangue Complex, Southeastern Hormozgan, Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2021
The Upper Cretaceous Arangue complex is located in the Makran zone at the SE of Iran. The complex consists of ultra-mafic rocks, microgabbro dykes, pillow lavas and lime stones that pillow lavas are mainly exposed to the northwest and southeast part of ...
Elham Nazari Zadeh   +2 more
doaj   +1 more source

Was the Kalkarindji Continental Flood Basalt Province a Driver of Environmental Change at the Dawn of the Phanerozoic?

open access: yesGeophysical Monograph Series, Page 435-447., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall   +2 more
wiley  

+1 more source

Petrography and Geochemistry of ophiolitic basalts from Marivan-Palangan region (Zagros, western Iran) [PDF]

open access: yesپترولوژی, 2019
Basaltic rocks from Marivan-Palangan ophiolite suite (MPO), Zagros suture zone, western Iran, are studied for magmatic evolution, and source rock partial melting processes.
Azad Karimi   +2 more
doaj   +1 more source

Are GMI gangliosidosis and Morquio type B two different disorders or part of one phenotypic spectrum?

open access: yesJIMD Reports, 2021
Monosialotetrahexosylganglioside (GMI) gangliosidosis and Morquio type B (MorB) are two lysosomal storage disorders (LSDs) caused by the same enzyme deficiency, β‐galactosidase (βgal).
Sandra D. K. Kingma   +3 more
doaj   +1 more source

Zircon dating of the basalt and felsic dyke in Haveri, SW Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2022
The E-MORB type Haveri basalt differs from the volcanic arc type rocks in the Tampere belt showing no subduction signature. It is considered to have formed in a marginal basin prior to the volcanic arc. We present here zircon U-Pb dating on two samples.
Jaakko Kara   +2 more
doaj   +1 more source

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