Results 11 to 20 of about 146 (130)

Geochemistry of forty‐one eclogitic and pyroxenitic mantle xenoliths from the Central Slave Craton, Canada (Ekati Diamond Mine)

Geoscience Data Journal
This article describes a novel dataset on non‐diamondiferous eclogite and garnet pyroxenite xenoliths from four kimberlite pipes of the Ekati Diamond Mine (Central Slave Craton, Canada). Xenoliths brought to the surface by kimberlite eruptions are direct
D. E. Jacob, A. Fung
doaj   +2 more sources

On the presence of the postmagmatic stage of diamond formation in kimberlites

Записки Горного института, 2022
On nowadays multiphase and the facies heterogeneity of the formations are distinguished at the study of kimberlite pipes. Most researchers associate the formation of diamonds only with the mantle source.
Sergey K. Simakov, Yuri B. Stegnitskiy
doaj   +1 more source

Three‐dimensional structural‐material models of the formation of the Nyurbinskaya and Botuobinskaya kimberlite pipes (Yakutian Diamondiferous Province, Russia)

Геодинамика и тектонофизика, 2019
The Nyurbinskaya and Botuobinskaya kimberlitic pipes were in the focus of a comprehensive study aimed to investigate their structural and material positions as the main deposits in the Nakyn field (Yakutian Diamondife‐ rous Province, Russia).
E. V. Serebryakov, A. S. Gladkov, D. A. Koshkarev   +2 more
doaj   +1 more source

STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS

Геодинамика и тектонофизика, 2021
The article deals with the fundamental concepts of a new method of interpretation of regional gravimetry (scale 1:1000000) based on the idea of the deformational nature of low-frequency gravity anomalies.
S. M. Makeev
doaj   +1 more source

Picroilmenites in Yakutian kimberlites: variations and genetic models [PDF]

Solid Earth, 2014
Major and trace element variations in picroilmenites from Late Devonian kimberlite pipes in Siberia reveal similarities within the region in general, but show individual features for ilmenites from different fields and pipes.
I. V. Ashchepkov, N. V. Alymova, A. M. Logvinova, N. V. Vladykin, S. S. Kuligin, S. I. Mityukhin, H. Downes, Yu. B. Stegnitsky, S. A. Prokopiev, R. F. Salikhov, V. S. Palessky, O. S. Khmel'nikova   +11 more
doaj   +1 more source

Thermal history of diamond from Arkhangelskaya and Karpinsky-I kimberlite pipes

Записки Горного института, 2022
This work studies and compares the main morphological, structural, and mineralogical features of 350 diamond crystals from the Karpinsky-I and 300 crystals of the Arkhangelskaya kimberlite pipes.
Evgeny A. Vasilev, Galina Yu. Kriulina, Victor K. Garanin   +2 more
doaj   +1 more source

Review of the spatial distribution of kimberlite pipes in the tectonic structures of the world

Geo&Bio
Kimberlite pipes are vertical or inclined cylindrical or cone-shaped bodies filled with kimberlite, an ultramafic igneous rock. The diameter of kimberlite pipes can vary from a few metres to 1.5 km, and their depth reaches several kilometres.
Andrii Luniachek
doaj   +1 more source

Oxide minerals of Kaavi kimberlites (Finland)

Известия высших учебных заведений: Геология и разведка, 2019
The mineralogical and petrogeochemical features of the Neoproterozoic kimberlite rocks of the Lahtojoki and Niilonsuo pipes of the Kaavi cluster (Kaavi-Kuopio, Finland) have been studied, differences in their petrogeochemical composition, quantitative ...
N. S. Azarova, A. V. Bovkun, V. K. Garanin, D. A. Varlamov, H. L. Hong   +4 more
doaj   +1 more source

CLUSTER ANALYSIS OF STRUCTURAL NITROGEN IMPURITIES IN SOUTHERN AFRICAN DIAMONDS: PLACER RELATIONSHIP WITH KIMBERLITE SOURCES

Известия Томского политехнического университета: Инжиниринг георесурсов, 2022
Relevance. The authors have developed the methodology for determining the sources of diamond-bearing placers, which clarifies the history of their development, the direction of diamond demolition and probable new areas of their accumulation.
Oleg N. Malykh, Asriël Van der Westhuizen   +1 more
doaj   +1 more source

STRUCTURAL-COMPOSITIONAL MODEL OF THE NYURBINSKAYA KIMBERLITE PIPE FORMATION (SREDNE-MARKHA AREA OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE)

Геодинамика и тектонофизика, 2016
The paper presents the results of comprehensive study of the primary diamond deposit of the Nyurbinskaya pipe in the Yakutian diamondiferous province. It is established, that the pipe is confined to the fault junction of four directions and is composed ...
A. S. Gladkov, D. A. Koshkarev, A. V. Cheremnykh, F. João, M. A. Karpenko, M. V. Marchuk, I. A. Potekhina   +6 more
doaj   +1 more source