Results 71 to 80 of about 14,415 (244)

Reply to Comment by Peace et al. on “Revealing the Cape Verde Hotspot Track Across the Great Lakes”

open access: yesGeophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract In Tao et al. (2025, https://doi.org/10.1029/2024GL110777), we presented a high‐resolution seismic anisotropy model, proposing that the Cape Verde (CV) hotspot caused enhanced radial anisotropy in the North American lithosphere. We also suggested that this interaction could have created zones of low‐lying topography that set the stage for ...
Aibing Li   +3 more
wiley   +1 more source

Olivine in the Udachnaya-East kimberlite (Yakutia, Russia): types, compositions and origins [PDF]

open access: yes, 2007
Olivine is the principal mineral of kimberlite magmas, and is the main contributor to the ultramafic composition of kimberlite rocks. Olivine is partly or completely altered in common kimberlites, and thus unavailable for studies of origin and evolution ...
Demouchy, S   +7 more
core   +3 more sources

Study of Garnets in Hellenistic–Roman Jewellery From the Collections of the Archaeological Museum of Thessaloniki, Greece

open access: yesJournal of Raman Spectroscopy, Volume 56, Issue 11, Page 1235-1253, November 2025.
This study presents the gemological analysis of 25 garnets from Hellenistic and Roman jewellery in the Archaeological Museum of Thessaloniki using mobile Raman spectroscopy and micro‐EDXRF. The garnets are classified into three geochemical clusters, with notable differences in distribution between Thessaloniki and Pydna, suggesting distinct trading ...
Maria Nikopoulou   +8 more
wiley   +1 more source

Ghana airborne geophysics project in the Volta and Keta Basin : BGS final report [PDF]

open access: yes, 2009
This report describes the work undertaken by BGS between November 2006 and March 2009 in collaboration with Fugro Airborne Surveys Pty Ltd on an airborne geophysical survey and ground reconnaissance mapping of the Volta River and Keta Basins, Ghana ...
Carney, J.N.   +3 more
core  

Metastable Nanosized Diamond Formation from Fluid Systems [PDF]

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

open access: yesGeochemistry, 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   +2 more
doaj   +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]

open access: yes
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

Sr, Nd, and Pb isotope evidence for a mantle origin of alkali chlorides and carbonates in the Udachnaya kimberlite, Siberia [PDF]

open access: yes, 2005
The kimberlite rocks of the Udachnaya-East pipe (Siberia) are uniquely fresh and contain very high abundances of primary volatiles (Cl, CO2, S). Alkali elements and chlorine are extremely abundant in the reconstructed kimberlite melt compositions, and ...
Kamenetsky, MB   +4 more
core   +1 more source

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

open access: yesИзвестия 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   +3 more
doaj   +1 more source

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

open access: yes, 2012
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura   +4 more
core  

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