Results 71 to 80 of about 3,317 (237)

Imaging the Earth's small-scale structure using full-waveform inversion: Theory and application to the imaging of mantle plumes

open access: yes, 2013
Within the last decade, increasing computational power and theoretical advances have initiated the transition from approximation-based tomography to iterative full-waveform tomography in regional and global seismology.
Rickers, F.
core   +1 more source

Human Destiny and the Natural Law in St Maximus the Confessor: A Contribution to Orthodox Christian Humanism

open access: yesModern Theology, EarlyView.
Abstract Orthodox Christian theology in general prides itself on bearing the mantle of patristic thought. Orthodox theological anthropology is no different, often drawing on Greek patristic sources in presenting its vision of the human being. Yet Orthodox anthropology can also broadly be categorized as personalist in ways that are not necessarily so ...
Alexis Torrance
wiley   +1 more source

Moving hotspots [PDF]

open access: yes, 2001
The assumption that stationary hotspots underlie the Earth’s lithospheric plates has been most important in the development of the theory of plate tectonics. According to the fixed hotspot hypothesis seamount trails are formed by volcanism penetrating the
Antretter, Maria
core  

Russia and the Birth of Right‐Wing Terrorism: Mass Politics, Antisemitism, and the Assassination of Mikhail Gertsenshtein

open access: yesThe Russian Review, EarlyView.
Abstract This article examines the assassination of Duma representative Mikhail Gertsenshtein in July 1906 as the pivotal moment for the emergence of the concept of “right‐wing terrorism” (pravyi terrorizm) in the Russian Empire. Drawing on court documents, police files, and censorship reports, this article argues that the significance of the ...
Moritz Florin
wiley   +1 more source

Morphology and tectonics of the Mid-Atlantic Ridge, 7°–12°S

open access: yes, 2003
We present swath bathymetric, gravity, and magnetic data from the Mid-Atlantic Ridge between the Ascension and the Bode Verde fracture zones, where significant ridge–hot spot interaction has been inferred.
T. A. Minshull   +5 more
core   +1 more source

Evolution Model for the Paleoproterozoic Talvivaara Mudstone‐Hosted Ni‐Zn‐Cu‐Co Deposit in Fennoscandia

open access: yesTerra Nova, EarlyView.
ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen   +3 more
wiley   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

open access: yesTerra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

Genesis of crystalline crust and lithosphere of ancient platforms according to data on the hot heterogeneous accretion of the Earth

open access: yesЛитосфера, 2017
Compositions of gneisses from the Early Precambrian crystalline complexes of the Aldan shield and of mantle xenoliths from kimberlites plot along the magmatic fractionation trends.
Vladimir S. Shkodzinskii
doaj   +2 more sources

The origin and implications of primordial helium depletion in the Afar mantle plume

open access: yesCommunications Earth & Environment
Mantle plumes are responsible for the Earth’s largest volcanic provinces. In the prevailing paradigm, the deep mantle is less degassed than convecting shallow mantle, implying that plume-derived lavas have higher concentrations of primordial volatiles ...
Ugur Balci   +4 more
doaj   +1 more source

Compositional trends of Icelandic basalts: Implications for short–length scale lithological heterogeneity in mantle plumes

open access: yes
Lithological variations in the mantle source regions under mid-ocean ridges and ocean islands have been proposed to play a key role in controlling melt generation and basalt composition.
Maclennan, John, Shorttle, Oliver
core   +1 more source

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