Results 71 to 80 of about 6,814 (200)

The Buoyancy of Cratonic Lithospheric Mantle

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Cratons are generally thought to be characterized by stable, long‐lived mantle roots. However, recent studies have suggested that the lithospheric mantle may be prone to removal, implying that it may be denser than the asthenosphere. To address these suggestions, we use a global data set of mantle xenoliths to estimate the density structure of
Z. J. Sudholz, A. Copley, K. Priestley
wiley   +1 more source

Petrochemical and petrophysical characterization of the lower crust and the Moho beneath the West African Craton, based on Xenoliths from Kimberlites [PDF]

Additional evidence to the composition of the lower crust and uppermost mantle was presented in the form of xenolith data. Xenoliths from the 2.7-Ga West African Craton indicate that the Moho beneath this shield is a chemically and physically gradational
Haggerty, Stephen E., Toft, Paul B.
core   +1 more source

The origin of Triassic/Jurassic kimberlite magmatism, Canada: Two mantle sources revealed from the Sr‐Nd isotopic composition of groundmass perovskite

Geochemistry, Geophysics, Geosystems, 2011
The crystallization ages and the Sr and Nd isotopic compositions of groundmass perovskite from a well‐established, SE trending, Triassic‐Jurassic corridor of kimberlite magmatism in central and eastern North America were determined to investigate the ...
S. E. Zurevinski, L. M. Heaman, R. A. Creaser   +2 more
doaj   +1 more source

Clarification of red-colored rocks of Cambrian in Nakyn ore field of Yakutian diamondiferous province

Известия высших учебных заведений: Геология и разведка, 2016
Clarification of terrigeneous-carbonate red-colored rocks of Cambrian was researched in Nakyn ore field of Yakutian diamonditerous province. The study was provided by the core data of prospecting and exploration holes, which drilled near and through ...
P. A. Ignatov, N. R. Zaripov, O. K. Kilizhekov, L. V. Liskovaya   +3 more
doaj   +1 more source

Interaction between protokimberlite melts and mantle lithosphere: evidence from mantle xenoliths from the Dalnyaya kimberlite pipe, Yakutia (Russia) [PDF]

, 2017
The Dalnyaya kimberlite pipe (Yakutia, Russia) contains mantle peridotite xenoliths (mostly lherzolites and harzburgites) that show both sheared porphyroclastic (deformed) and coarse granular textures, together with ilmenite and clinopyroxene megacrysts.
Afanasiev, Agashev, Agashev, Amshinsky, Arndt, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Ashchepkov, Bedard, Blundy, Boyd, Boyd, Brett, Brey, Burgess, Bussweiler, Bussweiler, Cas, DePaolo, Doucet, Evans, Finnerty, Fulmer, Genshaft, Gibson, Girnis, Giuliani, Goncharov, Green, Gregoire, Haggerty, Hart, Harte, Hauri, Howarth, Höfer, Imai, Ionov, Ionov, Ionov, Ishimaru, Karato, Kargin, Katayama, Kennedy, Klein-Ben David, Klemme, Kohler, Konzett, Kopylova, Kostrovitsky, Krogh, Kuzyura, Lavrent'ev, Lazarov, Logvinova, McCammon, McCammon, McDonough, McGregor, Mitchell, Moore, Moore, Nickel, Nickel, Nimis, O'Neill, O'Neill, Pearson, Peslier, Pokhilenko, Pokhilenko, Pokhilenko, Pokhilenko, Rodionov, Rodionov, Rodionov, Rudnick, Sazonova, Smelov, Sobolev, Sobolev, Sobolev, Sobolev, Sobolev, Sobolev, Solov'eva, Spetsius, Spetsius, Stagno, Stagno, Taylor, Tuff, Wells, Wu, Zack   +101 more
core   +2 more sources

Hotspots and the evolution of the mantle [PDF]

Trace element patterns show that continental and ocean island basalts are complementary to mid-ocean ridge basalts (MORB). The relative sizes of the two source regions can be estimated from enrichment/depletion patterns.
Anderson, D. L.
core   +1 more source

Subsolidus processes in the Longonjo and Bailundo carbonatites (Angola) [PDF]

, 2012
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura, Bambi, Aurora Cuaiela João Mateus, Castellano Calvo, Amaia, Gonçalves, Antonio Olimpio, Melgarejo Draper, Joan Carles   +4 more
core  

Metastable Nanosized Diamond Formation from Fluid Systems [PDF]

, 2010
The model of nanosized diamond particles formation at metastable P-T parameters from fluid is presented. It explains the specific of CVD diamond synthesis gases mixtures and hydrothermal growth of diamond at low P-T parameters as well as it explains the ...
Sergei Simakov
core   +2 more sources

The ultramafic belts [PDF]

, 1969
One petrological approach to upper mantle studies is to determine which ultramafic rocks represent mantle material. Ultramafic rocks occur in a variety of field and petrographic associations: in recent reviews, Wyllie [1967b, 1968] outlined eleven ...
Wyllie, Peter J.
core  

Estimation of fractionation of minerals using geoinformation systems in engineering and geological prospecting

Технічна інженерія
The article discusses the use of geographic information systems in the study of kimberlite deposits in order to establish diamondiferous content based on indicator minerals, in particular olivine.
N.V. Zuievska, T.V. Kosenko, E. Shukurlu, V.V. Korobiichuk   +3 more
doaj   +1 more source