Results 41 to 50 of about 2,573 (214)

Classification of physico-geological models

Известия высших учебных заведений: Геология и разведка, 2023
Background. A new classification of physico-geological models (PhGM) is presented, which includes system series of models of physico-chemical indicators, geological objects, and geological processes.
V. М. Bondarenko, L. Shavier
doaj   +1 more source

Mineralogy of garnets from the Jubileinaya kimberlite pipe and Ottorzhenets kimberlite body

Ores and metals
The article presents results of a study of the chemical composition of garnet xenocry-stals from a concentrate of the heavy fraction of kimberlites from the Yubileinaya pipe and Ottorzhenets kimberlite body. Samples from porphyry kimberlites and autolithic kimberlite breccias were taken for analysis from the Yubileinaya pipe.
Milaushkin M. V., Mal’kovets V. G., Gibsher A. A., Yakovlev I. V., Tychkov N. S.   +4 more
openaire   +2 more sources

East Meets West: The Trace of the Mesoproterozoic Kibaran Event in the Mantle Lithosphere Beneath Eastern Tanzania

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract We present elemental geochemistry and multiple isotopic systematics (Re‐Os, Lu‐Hf, Sm‐Nd and Sr) for mantle peridotite xenoliths from Lashaine in northern Tanzania. We use the data to examine how the major Proterozoic tectono‐thermal events that affected the crust of the western Tanzanian craton are imprinted on the lithospheric mantle in the ...
Sheng‐Hua Zhou, Qiao Shu, Sally A. Gibson, Hong‐Fu Zhang, Jing‐Jing Zhu, Hélène Legros, D. Graham Pearson   +6 more
wiley   +1 more source

Geochemical criteria for identifying diamond-bearing areas [PDF]

E3S Web of Conferences
The paper demonstrates that diamondiferous objects may be pinpointed even by the middle-scale geochemical surveys. Relevant criteria were developed to identify and classify such objects by their prospectivity.
Krinochkin Lev, Kilipko Victor, Trofimov Alexander, Krinochkina Olga, Mamina Dinya   +4 more
doaj   +1 more source

Criteries and prospects of diamonds of the Vitebsk granulite massif

Журнал Белорусского государственного университета: География, геология, 2021
The article describes the history of studying the diamond content of tectonic structures of the territory of Belarus. Based on the results of magnetometric, mineralogical, tectonic studies carried out by industrial geologists and scientists over the past
Victor S. Konishchev, Andrei M. Kovkhuto   +1 more
doaj   +1 more source

CO 2 Solubility in Kimberlite melts CO 2 Solubility in Kimberlite melts [PDF]

, 2015
International audienceCarbon dioxide is the most abundant volatile in kimberlite melts and its solubility exerts a prime influence on the melt structure, buoyancy, transport rate and hence eruption dynamics.
Gaillard, Fabrice, Laumonier, Mickaël, Massuyeau, Malcolm, Morizet, Yann, Moussallam, Yves   +4 more
core   +4 more sources

Electrical Conductivity of Carbonatite Melts to 20 GPa: Constraints on Partial Melting Atop the 410‐km Discontinuity and in the Lower Mantle Transition Zone

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Deep‐origin carbonatite melts are considered to be the products of partial‐melting of the oceanic crust in the subduction zones. In this study, we conducted electrical conductivity (EC) measurements on two samples, the composition of which resemble the partial‐melting products atop the 410‐km discontinuity and in the lower part of the ...
Bin Zhao, Jintao Zhu, Qi Chen, Takashi Yoshino   +3 more
wiley   +1 more source

Abundance and Partitioning of OH in a High-pressure Magmatic System: Megacrysts from the Monastery Kimberlite, South Africa [PDF]

, 2004
Concentrations of OH, and major and trace elements were determined in a suite of mantle-derived megacrysts that represent the crystallization products of a kimberlite-like magma at ~5 GPa and ~1400–1100°C.
Bell, David R., Moore, Rory O., Rossman, George R.   +2 more
core   +1 more source

Study of Garnets in Hellenistic–Roman Jewellery From the Collections of the Archaeological Museum of Thessaloniki, Greece

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1235-1253, November 2025.
This study presents the gemological analysis of 25 garnets from Hellenistic and Roman jewellery in the Archaeological Museum of Thessaloniki using mobile Raman spectroscopy and micro‐EDXRF. The garnets are classified into three geochemical clusters, with notable differences in distribution between Thessaloniki and Pydna, suggesting distinct trading ...
Maria Nikopoulou, Stefanos Karampelas, Evangelia Tsangaraki, Lambrini Papadopoulou, Christos Katsifas, Ioannis Nazlis, Annareta Touloumtzidou, Vasilios Melfos, Nikolaos Kantiranis   +8 more
wiley   +1 more source

Characteristics of the Deep Structure of the Kimberlite-Controlling Faults of the Arkhangelsk Diamondiferous Province According to the Microseismic Sounding Method. Review

Russian Journal of Earth Sciences
Prospecting for kimberlite pipes can be challenging due to their small size in plan. One potential solution to this problem is to search for kimberlite-controlling faults.
Danilov Konstantin
doaj   +1 more source