Results 51 to 60 of about 2,911 (204)
Геодинамика и тектонофизика, 2023 The results of different-extension geological survey, exploration and thematic work methods show that the Vilyui syneclise is relatively amagmatic. However, the recent factual evidence in this region indicates the occurrence of magmatism of a different ...
V. V. Baranov +7 more
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The provenance of Borneo's enigmatic alluvial diamonds:A case study from Cempaka, SE Kalimantan [PDF]
, 2016 Gem-quality diamonds have been found in several alluvial deposits across central and southern Borneo. Borneo has been a known source of diamonds for centuries, but the location of their primary igneous source remains enigmatic.
Atkinson +112 more
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Cretaceous fossils from the Orapa Diamond Mine [PDF]
, 1997 Main articleThe Orapa kimberlite pipe, situated in north-central Botswana, is well-known for its rich reserves of diamonds. It is indeed one of the largest and richest diamond mines in the world.
Bamford, M. K. +6 more
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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 +1 more
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Review of South African research on volcanic and related rocks and mantle-derived materials : 1999-2002 [PDF]
, 2003 This report reviews South African research relating to the scientific interests of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) and which was published between 1999 and 2002.
Marsh, J S
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, 2015 It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we
Froggatt, C. D., Nielsen, H. B.
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Use of gamma-ray spectrometry for identifying weakly magnetic diamondiferous kimberlites [PDF]
, 2016 Diamondiferous kimberlites are the most important source of bedrock diamond deposits. The goal of the study is to analyze the use of gamma-ray spectrometry techniques to explore weakly magnetic diamondiferous kimberlites.
Ledengskiy, R. A.
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Yankuang ceshi, 2014 According to crystal mineralogy theory, under the diagenetic environments with different physical and chemical conditions, crystal structure and chemical composition of spinel group minerals in kimberlite will be obviously different.
CHI Guang-cheng, WU Yue
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Kyanite-bearing eclogite xenoliths from the Udachnaya kimberlite, Siberian craton, Russia [PDF]
BSGF - Earth Sciences Bulletin, 2017 Xenoliths brought up by kimberlite magmas are rare samples of otherwise inaccessible lithospheric mantle. Eclogite xenoliths are found in most cratons and commonly show a range of mineral and chemical compositions that can be used to better understand ...
Radu Ioana-Bogdana +6 more
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, 1979 The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
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