Results 21 to 30 of about 12,575 (215)

Hydrogen Diffusion in Clinopyroxene at Low Temperatures (195°C–400°C) and Consequences for Subsurface Processes

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Studying diffusion of hydrogen in nominally anhydrous minerals, like clinopyroxene, at low temperatures is a challenging task due to experimental and analytical difficulties.
Thilo Bissbort   +3 more
doaj   +1 more source

PHYSICO-CHEMICAL PARAMETERS OF MINERAL-FORMING PROCESSES IN PEGMATITES OF THE ILMENOGORSK ALKALINE COMPLEX (SOUTH URALS) AND ALTAI-SAYANY REGION (SOUTH SIBERIA) [PDF]

open access: yesМинералогия, 2020
The conditions of mineral formation in non-granite pegmatites of the Urals and Siberia are examined. The physico-chemical parameters of the crystallization of minerals in miaskite-pegmatites of the Ilmenogorsk alkaline complex (South Urals) and ...
V.A. Simonov
doaj   +1 more source

Magmatic Processes at Euganean Hills (Veneto Volcanic Province, Italy): Clinopyroxene Investigation to Unravel Magmatic Interactions

open access: yesGeosciences, 2022
The Euganean Hills (NE Italy) magmatic district represents the final volcanic activity of the Veneto Volcanic Province. Alkaline to subalkaline magmatic suite dominated by intermediate to felsic volcanic rocks characterises the latest volcanic activity ...
Sabrina Nazzareni   +4 more
doaj   +1 more source

Partial Melting of Lower Oceanic Crust Gabbro: Constraints From Poikilitic Clinopyroxene Primocrysts

open access: yesFrontiers in Earth Science, 2018
Successive magma batches underplate, ascend, stall and erupt along spreading ridges, building the oceanic crust. It is therefore important to understand the processes and conditions under which magma differentiates at mid ocean ridges.
Julien Leuthold   +6 more
doaj   +1 more source

Thermobar: An open-source Python3 tool for thermobarometry and hygrometry

open access: yesVolcanica, 2022
We present Thermobar, a new open-source Python3 package for calculating pressures, temperatures, and melt compositions from mineral and mineral-melt equilibrium.
Penny Wieser   +6 more
doaj   +1 more source

Application of clinopyroxene as a petrogenic mineral in determining the nature of Ordovician intrusive rocks in Ziarat (Southern Gorgan, Golestan Province)

open access: yesJournal of Economic Geology, 2021
Introduction The study area is located in the Eastern Alborz zone (Gansser, 1951) which is a part of the northern margin of Gondwana during the Paleozoic (Stöcklin, 1974; Salehi Rad, 1979; Berberian and King, 1981; Şengor, 1990; Alavi, 1991, 1996 ...
Qassem Azizzadeh   +3 more
doaj   +1 more source

Variations of clinopyroxene/melt element partitioning during assimilation of olivine/peridotite by low-Mg diorite magma [PDF]

open access: yes, 2015
The effects of crystal chemistry and melt composition on the control of clinopyroxene/melt element partitioning (D) during the assimilation of olivine/peridotite by felsic magma have been investigated in Mesozoic high-Mg diorites from North China.
Liu, Fu   +5 more
core   +1 more source

Replication Data for: Clinopyroxene/Melt Partitioning: Models for Higher Upper Mantle Pressures Applied to Sodium and Potassium

open access: yes
This dataset encompasses five codes to replicate data published in Schmidt and Noack 2021 (accepted): The code D_Na.m calculates clinopyroxene/melt partition coefficients for sodium thermodynamically.
Noack, Lena, Schmidt, Julia M.
core   +3 more sources

Mineral chemistry of clinopyroxene and feldspars in the Neoproterozoic alkaline dykes of the Bangalore District, Karnataka, India [PDF]

open access: yesBulletin of the Geological Society of Finland, 1993
The unmetamorphosed Neoproterozoic dykes of the continental intraplate alkaline magmatism studied in Southern Karnataka consist of analcime-tinguaites, tinguaites, bostonites and solvsbergites.
H.T. Makkonen, K. Laajoki, T.C. Devaraju
doaj   +1 more source

Surface textures of detrital pyroxenes in coastal dune sands (western Gulf of Mexico, Mexico): Implications for their preservation and geoenvironmental processes

open access: yesThe Depositional Record, 2023
This work investigates how the surface textures and morphology of pyroxene grains evolve during their source‐to‐sink history. This study applies to detrital clinopyroxenes concentrated in coastal dune sands of the Gulf of Mexico which were sourced in the
Juan J. Kasper‐Zubillaga   +5 more
doaj   +1 more source

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