Results 41 to 50 of about 9,703 (232)

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, morteza delavari, Sadraldin Amini, Amir Ali Tabbakh Shabani   +3 more
doaj   +1 more source

A micro-analytical approach to partition coefficients in plagioclase and clinopyroxene of basaltic sills in Serra Geral Formation, Paraná Basin, Brazil

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, Léo Afraneo Hartmann, Wilson Wildner, Hans-Joachim Massonne, Thomas Theye   +4 more
doaj   +1 more source

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts

, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
H. Downes, V. Höck, V. Cvetković, D. Prelević, M. Lazarov, Cvetkovic, V., Lazarov, M., Downes, Hilary, Hock, V., Prelevic, D.   +9 more
core   +1 more source

Replication Data for: Parameterising a Model of Clinopyroxene/Melt Partition Coefficients for Sodium to Higher Upper Mantle Pressure

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

COMPLICATED THERMAL HISTORY OF THE LITHOSPHERIC MANTLE OF THE ANABAR REGION: RECONSTRUCTIONS BASED ON XENOCRYSTS FROM KIMBERLITES

Геодинамика и тектонофизика
The 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, E. A. Gladkochub, S. I. Kostrovitsky   +2 more
doaj   +1 more source

Late Pleistocene Volcanic Rocks From Tengchong Volcanic Field at SE Tibetan Plateau: Constraints on Petrogenesis and Mantle and Crustal Processes

Geological Journal, EarlyView.
Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley   +1 more source

Magmatic characteristics and crystallization condition of the Gasht- Masuleh gabbros (North of Iran) based on clinopyroxene and orthopyroxene composition [PDF]

پترولوژی, 2019
The Alborz Range, as a part of the Alpine-Himalayan orogeny, formed during the Cimmerian orogeny due to northward movements of the Central Iran micro-plate towards Eurasia.
Leila Rezaei, Mohssen Moazzen, Martin Timmerman   +2 more
doaj   +1 more source

Supra-subduction melt modification of the fossil subcontinental lithospheric mantle: insights from ultra-depleted Khara-Nur ophiolitic peridotites (Eastern Sayan, central Asian orogenic belt)

Frontiers in Earth Science, 2023
Mantle peridotites from the Mesoproterozoic forearc-type ophiolites in the Eastern Sayan range (Eastern Siberia) provide insights into the nature and formation processes of the supra-subduction mantle.
Marina A. Gornova, Vasiliy A. Belyaev, Anas A. Karimov, Anas A. Karimov, Sergei Yu. Skuzovatov, Nikolay S. Karmanov, Alexander Ya. Medvedev, Nikolay V. Bryanskiy, Nikolay V. Bryanskiy   +8 more
doaj   +1 more source

Partitioning of chromium between garnet and clinopyroxene: first-principle modelling versus metamorphic assemblages [PDF]

European Journal of Mineralogy, 2020
Understanding the geochemical behaviour of trace and minor elements in mineral assemblages is of primary importance to study small- and large-scale geological processes.
S. Figowy, B. Dubacq, Y. Noël, P. d'Arco   +3 more
doaj   +1 more source

Modeling the Thermal Properties of Hydrogen‐Based Direct Reduced Iron Using Computational Thermodynamics and Machine Learning

steel research international, EarlyView.
Hydrogen‐based direct reduced iron (H‐DRI) melts differently from scrap and carbon‐bearing DRI. This work combines differential scanning calorimetry experiments, FactSage thermodynamics, and simple composition‐based regression to predict solidus, liquidus, heat capacity, and enthalpy for H‐DRI.
Ankur Agnihotri, Petri Sulasalmi, Pasquale Cavaliere, Ville‐Valtteri Visuri   +3 more
wiley   +1 more source