Results 161 to 170 of about 657 (209)

The composition of mantle xenoliths in the Matsoku Kimberlite Pipe

International Kimberlite Conference Extended Abstracts: 1973, 2019
openaire   +2 more sources

Impact structures in Africa: A review.

J Afr Earth Sci, 2014
Reimold WU, Koeberl C.
europepmc   +1 more source

Degassing structures in volcaniclastic kimberlite: Examples from southern African kimberlite pipes

Journal of Volcanology and Geothermal Research, 2008
Kimberlite pipes are commonly filled with a distinctive structureless facies termed volcaniclastic kimberlite (previously also termed Tuffisitic Kimberlite Breccia, TKB), which constitutes a thorough mix of both juvenile material and lithic clasts derived from all stratigraphic levels.
Thomas M Gernon, R S J Sparks, Matthew Field   +2 more
exaly   +4 more sources

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Seismic methods for the detection of kimberlite pipes

Exploration Geophysics, 1998
The results of a seismic experiment conducted in Northern Territory over known kimberlite pipes are shown.
Milovan Urosevic
exaly   +2 more sources

Ultramafic Alkaline Rocks of Kepino Cluster, Arkhangelsk, Russia: Different Evolution of Kimberlite Melts in Sills and Pipes

Minerals (Basel, Switzerland), 2021
To provide new insights into the evolution of kimberlitic magmas, we have undertaken a detailed petrographic and mineralogical investigation of highly evolved carbonate–phlogopite-bearing kimberlites of the Kepino cluster, Arkhangelsk kimberlite province,
A V Kargin
exaly   +2 more sources

Kimberlite metasomatism at Murowa and Sese pipes, Zimbabwe

Lithos, 2004
C B Smith
exaly   +4 more sources

MANTLE XENOLITHS IN THE MATSOKU KIMBERLITE PIPE

Physics and Chemistry of the Earth, 1975
Abstract The chemical compositions of selected xenoliths from the Matsoku pipe and many constituent minerals are discussed. It is concluded that the xenoliths form a closely related suite of rocks of differing mineralogy and chemistry which could have been produced during a single igneous event in the mantle. It is likely that at solidus temperatures
J.J. Gurney, B. Harte, K.G. Cox
openaire   +1 more source

Kimberlites of the Manchary pipe: a new kimberlite field in Central Yakutia

Russian Geology and Geophysics, 2010
Abstract This paper reports new petrographic and mineralogical data on the Manchary kimberlite pipe, which was discovered south of Yakutsk (Central Yakutia) in 2007–2008, 100 km. The pipe breaks through the Upper Cambrian carbonate deposits and is overlain by Jurassic terrigenous rock masses about 100 m thick.
A.P. Smelov, A.P. Andreev, Z.A. Altukhova, S.A. Babushkina, K.A. Bekrenev, A.I. Zaitsev, E.D. Izbekov, O.V. Koroleva, V.M. Mishnin, A.V. Okrugin, O.B. Oleinikov, A.A. Surnin   +11 more
openaire   +1 more source

Geomechanical conditions of kimberlite extraction in terms of internatsionalnaya kimberlite pipe

Journal of Mining Science, 2009
The paper analyzes geomechanical conditions of slicing method application to extract a vertical ore body in terms of Internatsionalnaya kimberlite pipe. The authors assess stability of stopes at principal stages of horizon mining.
V. D. Baryshnikov, L. N. Gakhova
openaire   +1 more source