Results 21 to 30 of about 172,406 (286)

Calmodulin regulates the calcium homeostasis in mantle of Crassostrea gigas under ocean acidification

open access: yesFrontiers in Marine Science, 2022
The biosynthesis of shell is a complicated calcification process in the marine bivalve, which can be severely impacted by ocean acidification (OA). Calmodulin (CaM) is a pivotal calcium regulator and thought to be crucial for calcification.
Xiaoyu Xin   +25 more
doaj   +1 more source

Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]

open access: yes, 2014
We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick   +6 more
core   +1 more source

The Origin of Earth's Mantle Nitrogen: Primordial or Early Biogeochemical Cycling?

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Earth's mantle nitrogen (N) content is comparable to that found in its N‐rich atmosphere. Mantle N has been proposed to be primordial or sourced by later subduction, yet its origin has not been elucidated.
H. Kurokawa   +7 more
doaj   +1 more source

Cenozoic mountain building and topographic evolution in Western Europe: impact of billions of years of lithosphere evolution and plate kinematics

open access: yesBSGF - Earth Sciences Bulletin, 2021
The architecture and tectono-magmatic evolution of the lithosphere of Europe are the result of a succession of subduction, rifting and inputs from plumes that have modified the lithospheric mantle since the Neoproterozoic (750–500 Ma).
Mouthereau Frédéric   +13 more
doaj   +1 more source

Age and Geochemistry of High Arctic Large Igneous Province Tholeiitic Magmatism in NW Axel Heiberg Island, Canada

open access: yesGeochemistry, Geophysics, Geosystems, 2023
The Cretaceous High Arctic Large Igneous Province (HALIP) in Canada involved extrusion of continental flood basalts (CFBs) at 130–120 Ma and 100‐95 Ma and emplacement of an extensive sill and dike network that intersected the Carboniferous to Paleogene ...
F. M. Deegan   +4 more
doaj   +1 more source

Atlas of the underworld: Slab remnants in the mantle, their sinking history, and a new outlook on lower mantle viscosity [PDF]

open access: yes, 2018
Across the entire mantle we interpret 94 positive seismic wave-speed anomalies as subducted lithosphere and associate these slabs with their geological record.
Mantle dynamics & theoretical geophysics   +3 more
core   +1 more source

The effect of the mantle and core matter phase state on the course of geodynamic processes

open access: yesГеофизический журнал, 2023
The study of the course of geodynamic processes in the lower crust and upper mantle proves that an additional energy contribution is made by a change in the phase state of matter with increasing pressure and temperature.
O.V. Usenko
doaj   +1 more source

Rat Kidney Cancers Determined by Dietary Ochratoxin A in the First Year of Life

open access: yesJournal of Kidney Cancer and VHL, 2016
An experiment to explore renal carcinogenic efficacy of male rat exposure to dietary ochratoxin A (OTA) only in the first year of life has been made in comparison to lifetime exposure. Ten months exposure to OTA at 300 μg/kg b.w.
Peter George Mantle
doaj   +1 more source

Rare earth element characteristics of pyrope garnets from the Kaavi-Kuopio kimberlites - implications for mantle metasomatism [PDF]

open access: yesBulletin of the Geological Society of Finland, 2005
Peridotitic garnet xenocrysts from five kimberlite pipes in the Kaavi-Kuopio area of eastern Finland have been studied using major and trace element geochemistry to obtain information on the stratigraphy, compositional variability and evolutionary ...
M. Lehtonen
doaj   +1 more source

Mantle structure and tectonic history of SE Asia [PDF]

open access: yes, 2015
Seismic travel-time tomography of the mantle under SE Asia reveals patterns of subduction-related seismic P-wave velocity anomalies that are of great value in helping to understand the region's tectonic development.
Wim Spakman   +4 more
core   +2 more sources

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