Results 51 to 60 of about 13,004 (219)

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

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

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, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +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

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

(Table 1) Geochemistry of plagioclase microlyte in clinopyroxene megacryst in ODP Hole 140-504B

, 1995
(Table 1) Geochemistry of plagioclase microlyte in clinopyroxene megacryst in ODP Hole 140 ...
Henry J B Dick (6887306), Johnson, Kevin T M, Kevin T M Johnson (6973082), Dick, Henry J B   +3 more
core   +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

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
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

Technologies of Transition: Pottery Production and Specialization in Early Rome and Its Neighbors. Neutron Activation Analysis of Regional Assemblages and a Mineralogical‐Petrographic Study of Impasto Chiaro‐Sabbioso

Archaeometry, EarlyView.
ABSTRACT The following paper investigates ceramic production and signs of specialization in Rome and the wider region during the early first millennium bce, through an archaeometric approach using Instrumental Neutron Activation Analysis (NAA), and complementary techniques.
Mattia D'Acri, Maria Verde, Alberto De Bonis, Vincenzo Morra, Brandi L. MacDonald   +4 more
wiley   +1 more source