Results 51 to 60 of about 15,166 (249)
Mineralogy of garnets from the Jubileinaya kimberlite pipe and Ottorzhenets kimberlite body
Руды и металлыThe article presents results of a study of the chemical composition of garnet xenocrystals from a concentrate of the heavy fraction of kimberlites from the Yubileinaya pipe and Ottorzhenets kimberlite body.
Milaushkin M. V. +4 more
doaj +1 more source
Komatiites, kimberlites, and boninites [PDF]
Journal of Geophysical Research: Solid Earth, 2003 When the mantle melts, it produces ultramafic magma if the site of melting is unusually deep, the degree of melting is unusually high, or the source is refractory. For such melting to happen, the source must be unusually hot or very rich in volatiles. Differing conditions produce a spectrum of ultramafic magma types.
openaire +3 more sources
Lithospheric Delamination Below the North American Midcontinent Ceased Subsidence in Cratonic Basins
AGU Advances, Volume 7, Issue 1, February 2026.Abstract Cratonic lithospheres carry a long history of tectonic modifications that result in heterogeneous structures, as revealed by an increasing number of geophysical observations. The existence of cratonic basins indicates protracted periods of tectonic modification, causing subsidence within global continental interiors.
Xiaotao Yang +3 more
wiley +1 more source
Material aspects of kimberlite rocks productivity
Мінеральні ресурси України, 2017 Most of investigated kimberlite diatremes of the Siberian platform represent multiphase pipes. Each magmatic phase of intrusion, formed inside diatremes, is composed by kimberlites with specific petrographic and petrochemical type possessing a number of ...
M. M. Zinchuk
doaj
Restoring the past glory of Diamond Mining in south India- A plausible case of diamondiferous Wajrakarur kimberlite pipe clusters with geochemical evidences [PDF]
International Journal of Mining and Geo-Engineering, 2019 A plausible case of collective and economical mining of diamondiferous kimberlite deposits of Wajrakarur and adjoining places in Andhra Pradesh, southern India along with the whole-rock geochemical evidences in support of their diamond potentiality are ...
Rameshchandra Phani Pothuri
doaj +1 more source
Kimberlites I: Kimberlites and Related Rocks. Kimberlites II: The Mantle and Crust‐Mantle Relationships [PDF]
Eos, Transactions American Geophysical Union, 1985 These volumes open with a tribute to academician Vladimir Stepanovich Sobolev, who died several days before the opening of the Third International Kimberlite Conference at Clermont Ferrand, France. V.S. Sobolev made major contributions to the field of kimberlite and upper mantle petrology throughout his lifetime and did much to spark the renaissance in
openaire +1 more source
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 +6 more
wiley +1 more source
Plume genesis of non-kimberlite diamonds
Литосфера, 2015 Calculations shown that a relatively low-temperature kimberlite magmas consolidated with decompression exploded on significant depth and formed pipes.
V. S. Shkodzinskiy
doaj +2 more sources
Extreme 18O-enrichment in majorite constrains a crustal origin of transition zone diamonds [PDF]
, 2015 The fate of subducted oceanic lithosphere and its role in the planet-scale geochemical cycle is a key problem in solid Earth studies. Asthenospheric and transition zone minerals included in diamond have been interpreted as representing subducted oceanic ...
Harris, J. W. +3 more
core +1 more source
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 +3 more
wiley +1 more source