Results 31 to 40 of about 3,014 (216)

The Relationship Between Kimberlitic Magmatism and Electrical Conductivity Anomalies in the Mantle

Geophysical Research Letters, 2022
Kimberlites are igneous rocks whose formation remains enigmatic due to their severely altered nature, highly variable compositions and rapid ascent through the lithosphere.
Sinan Özaydın, Kate Selway
doaj   +1 more source

GENESIS AND MINERAL-GEOCHEMICAL ZONING OF THE QUARTZ-VEIN GOLD DEPOSIT CENTRAL (KUZNETSK ALATAU)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2023
Link for citation: Voroshilov V.G., Molukpaeva D.K., Timkin T.V., Savinova O.V. Genesis and mineral-geochemical zoning of the quartz-vein gold deposit Central (Kuznetsk Alatau). Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023,
Valery G. Voroshilov, Diana K. Molukpaeva, Timofey V. Timkin, Olesya V. Savinova   +3 more
doaj   +1 more source

Genesis of primitive Hawaiian rejuvenated-stage lavas: Evidence for carbonatite metasomatism and implications for ancient eclogite source [PDF]

arXiv, 2020
To constrain a contribution of deep carbonated mantle, to fractionation of Hf relative to rare earth elements (REE) in volcanic series, we examine available high-quality data on major, trace element and Nd-Hf isotope compositions of primitive lavas and glasses erupted during preshield, postshield and mostly rejuvenated stage of the Hawaiian hot spot ...
arxiv  

Genesis and reservoir preservation mechanism of 10 000‐m ultradeep dolomite in Chinese craton basin

Deep Underground Science and Engineering, EarlyView.
Potential exploration target stratum of 10 000‐m ultradeep dolomite in Sichuan Basin and Tarim Basin, China. Abstract The 10 000‐m ultradeep dolomite reservoir holds significant potential as a successor field for future oil and gas exploration in China's marine craton basin.
Guangyou Zhu, Xi Li, Bin Zhao, Hua Jiang, Yinghui Cao, Yan Zhang, Weiyan Chen, Tingting Li, Jiakai Hou   +8 more
wiley   +1 more source

Xenoliths in the alkali basalts of Makhtesh Ramon of Desert Negev (Israel) as indicators of mantle metasomatosis and magma generation

Литосфера, 2016
Xenoliths in the Early Cretaceous alkali basalts of Makhtesh Ramon basin (southern Israel) are represented by essentially olivine rocks: dunite (usually including clinopyroxen) - 5% of the total amount, lherzolite - 21%, wehrlite - 28%, clinopyroxenite -
G. B. Fershtater, Z. A. Yudalevich, V. V. Khiller   +2 more
doaj   +2 more sources

Application of 3D Raman Mapping on Complex Inclusions: A Case Study of the Styrian Basin Mantle Xenoliths (W‐Carpathian Pannonian Region)

Journal of Raman Spectroscopy, EarlyView.
Recent advancements in spectral and spatial resolutions for Raman spectroscopy allow the analysis of fluid and melt inclusions. To explore the applicability of 3D Raman mapping, we conducted 3D Raman mapping on inclusions hosted by orthopyroxene in modally metasomatized mantle xenoliths from the Styrian Basin (W‐Carpathian Pannonian Region).
Justine L. Myovela, László E. Aradi, Tamás Spránitz, Zoltán Taracsák, Máté Hegedűs, Patrik Konečný, János Kovács, Márta Berkesi   +7 more
wiley   +1 more source

Accessory minerals: a provenancing tool for steatite quarries

Archaeometry, EarlyView.
Abstract Steatite has been a widely traded material across a range of archaeological contexts. Yet, challenges inherent to determining its provenance limits our understanding of the networks and mechanisms of its exchange. We present a robust new accessory mineral provenancing “fingerprint” method based their specific growth history.
Riia Chmielowski, Kamal Badreshany, Karen Milek   +2 more
wiley   +1 more source

Phase Equilibria Analysis for Metacarbonate With Applications to Zoned Calc‐Silicate Aureoles

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Carbonate rocks react with infiltrating hydrothermal fluids to produce zoned calcsilicate assemblages in contact aureoles. Petrogenetic grids provide valuable insights into phase relations, metamorphic temperature (T) and the fluid composition (X) of the metacarbonate systems, as well as semi‐quantification of the prograde decarbonation at ...
Zhenhao Zhou, Xu Chu
wiley   +1 more source

Metasomatites of medium and mafic composition from Nyaschevo massif (Ilmeny Mauntains, South Urals)

Литосфера, 2015
The results of the study of mediosiliceous and mafic metasomatites located in ultramafic and mafic rocks Nyaschevo massif presents in the paper. The texthural and structural features of these rocks allow to attribute them to tectonites - protomylonites and
E. V. Medvedeva, A. B. Nemov, V. A. Kotlyarov   +2 more
doaj   +2 more sources

Ti-Nb Mineralization of Late Carbonatites and Role of Fluids in Its Formation: Petyayan-Vara Rare-Earth Carbonatites (Vuoriyarvi Massif, Russia)

Geosciences, 2018
This article is devoted to the geology of titanium-rich varieties of the Petyayan-Vara rare-earth dolomitic carbonatites in Vuoriyarvi, Northwest Russia. Analogues of these varieties are present in many carbonatite complexes. The aim of this study was to
Evgeniy Kozlov, Ekaterina Fomina, Mikhail Sidorov, Vladimir Shilovskikh   +3 more
doaj   +1 more source