Results 71 to 80 of about 16,936 (226)
The 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
Terra 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
Литосфера, 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
, 2016 Several lines of evidence suggest that the velocity amplitude in global simulations of solar convection, U, may be systematically over-estimated. Motivated by these recent results, we explore the factors that determine U and we consider how these might ...
Ahlers +47 more
core +1 more source
Petrology of some oceanic island basalts: PRIMELT2.XLS software for primary magma calculation [PDF]
, 2008 PRIMELT2.XLS software is introduced for calculating primary magma composition and mantle potential temperature (TP) from an observed lava composition. It is an upgrade over a previous version in that it includes garnet peridotite melting and it detects ...
Asimow, Paul D., Herzberg, C.
core +2 more sources
The origin and implications of primordial helium depletion in the Afar mantle plume
Communications Earth & EnvironmentMantle 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
Thermal and electrohydrodynamic plumes: a compartive study [PDF]
, 1996 This paper deals with self similar thermal and electrohydrodynamic (EHD) plumes. The former arises from hot lines or points, whereas the latter arises when sharp metallic contours submerged in non conducting liquids support high electrostatic potential,
Castellanos, A. +2 more
core +1 more source
Volcanism by melt-driven Rayleigh-Taylor instabilities and possible consequences of melting for admittance ratios on Venus [PDF]
A large number of volcanic features exist on Venus, ranging from tens of thousands of small domes to large shields and coronae. It is difficult to reconcile all these with an explanation involving deep mantle plumes, since a number of separate arguments ...
Scott, D. R. +2 more
core +1 more source
Anomalies of Density, Stresses, and the Gravitational Field in the Interior of Mars
, 2012 We determined the possible compensation depths for relief harmonics of different degrees and orders. The relief is shown to be completely compensated within the depth range of 0 to 1400 km.
A. S. Konopliv +14 more
core +1 more source
Dynamic interaction between tectonic plates, subducting slabs, and the mantle [PDF]
, 1997 Mantle convection models have been formulated to investigate the relation between plate kinematics and mantle dynamics. The cylindrical geometry models incorporate mobile, faulted plate margins, a phase change at 670 km depth, non-Newtonian rheology, and
Bryan L. Isacks +2 more
core +1 more source