Results 31 to 40 of about 9,703 (232)

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

Geosciences, 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, Daniele Morgavi, Maurizio Petrelli, Omar Bartoli, Diego Perugini   +4 more
doaj   +1 more source

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

Frontiers 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, C. Johan Lissenberg, Brian O'Driscoll, Ozge Karakas, Trevor Falloon, Dina N. Klimentyeva, Peter Ulmer   +6 more
doaj   +1 more source

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

Volcanica, 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, Maurizio Petrelli, Jordan Lubbers, Eric Wieser, Sinan Ozaydin, Adam Kent, Christy Till   +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)

Journal 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, Seyed Jamal Sheikhzakariaee, Mostafa Raghimi , Aziz Rahimi Chakdel   +3 more
doaj   +1 more source

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

Bulletin 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

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

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

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

The 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, Raymundo Gerardo Martínez‐Serrano, David M. Buchs, Mauricio Mendieta‐Lora, Elsa Arellano‐Torres, León Felipe Álvarez‐Sánchez   +5 more
doaj   +1 more source

MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION

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, T. V. Kalashnikova, I. V. Ashchepkov   +2 more
doaj   +1 more source

BONINITES AS A CRITERION FOR THE GEODYNAMIC DEVELOPMENT OF MAGMATIC SYSTEMS IN PALEOSUBDUCTION ZONES IN GORNY ALTAI

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, V. A. Simonov, I. Yu. Safonova   +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