Results 31 to 40 of about 12,575 (215)
Геодинамика и тектонофизика, 2022 The composition of barophilic minerals from mantle xenoliths and Cpx from concentrates of the Kuranakh, Luchakan, Dyuken, and Ary-Mastakh fields of the Anabar region has been studied.
S. I. Kostrovitsky +2 more
doaj +1 more source
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]
, 2015 [EN] Major and trace element chemistry has been determined in the main minerals (olivine, orthopyroxene, clinopyroxene, plagioclase, amphibole, phlogopite) from the Talavera and La Solanilla gabbroic intrusions (Spanish Central System). The results show
Jeffries, T. E. +11 more
core +1 more source
Геодинамика и тектонофизика, 2018 Ancient primary boninitic melts of the Gorny Altai (65–105 km, 1410–1590 °C) were studied from the composition of melt inclusions in clinopyroxenes.
A. V. Kotlyarov +2 more
doaj +1 more source
Creep of dry clinopyroxene aggregates [PDF]
Journal of Geophysical Research: Solid Earth, 2001 We have determined diffusional and dislocation creep rheologies for clinopyroxenite Ca1.0Mg0.8Fe0.2Si2O6 under dry conditions by deforming natural and hot‐pressed samples at confining pressures of 300–430 MPa and temperatures of 1100°–1250°C with the oxygen fugacity buffered by either nickel‐nickel oxide or iron‐wüstite powders.
Misha Bystricky, Stephen Mackwell
openaire +1 more source
Brazilian Journal of Geology: In the present study, detailed micro-analytical data (major and trace elements) in minerals from sills of Serra Geral Formation represents the first attempt to evaluate the partition coefficient of Sc, Ti, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Mo ...
Leonardo Cardoso Renner +4 more
doaj +1 more source
The Late- Cretaceous volcanic rocks from Talesh area (western Alborz): chemical variation, crystallization condition, hygrometry and tectonic setting [PDF]
پترولوژی, 2020 In the Talesh area (western Alborz), a thick sedimentary- volcanic association formed in a littoral- deltaic environment during the Late Cretaceous. The extrusives comprise volcanoclastics (tuffs), lava flows (pillow and massive) and basic dykes.
Khadijeh Amani +3 more
doaj +1 more source
The Role of Clinopyroxene on the Rheology of Dry Olivine–Clinopyroxene Aggregates
MineralsTo investigate the influence of a second-phase mineral on the rheology of mantle peridotite, we conducted high-temperature deformation experiments on dry olivine–clinopyroxene (Ol-Cpx) aggregates. Cylindrical samples were manufactured using hot-isostatic pressing techniques, with Ol as the matrix phase and Cpx added at volume fractions of fCpx = 0.1, 0.
Xiaodong Zheng +3 more
openaire +1 more source
This dataset encompasses two codes to replicate data published in Schmidt and Noack (2021): The code D_Na.m calculates clinopyroxene/melt partition coefficients for sodium thermodynamically.
Noack, Lena, Schmidt, Julia M.
core +3 more sources
Геодинамика и тектонофизикаThe thermal history and thickness of the lithospheric mantlebeneath the kimberlite fields of the Eastern Anabar shield and adjacent territories of the Siberian craton were reconstructed based on the composition of clinopyroxene xenocrysts from the ...
А. M. Dymshits +2 more
doaj +1 more source
Geological Journal, EarlyView.Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos +6 more
wiley +1 more source