Results 61 to 70 of about 3,348 (162)
Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1288-1308, July 2026.Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson +3 more
wiley +1 more source
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.
core
Current trends of improving the efficiency of froth separation of diamond-bearing kimberlites
Горные науки и технологииAlong with the introduction of new froth separation sections at new and existing enterprises, the basis for increasing the output of small diamonds is the reduction of their losses at the existing froth separation sections.
Valery V. Morozov +4 more
doaj +1 more source
Мінеральні ресурси України, 2019 Results of complex research of different age ancient weathering crusts in various rocks (terrigenous-carbonate rocks of Lower Paleozoic, dolerites, tuffs and tufogene formations, kimberlites) within the main diamondiferous regions of the Siberian ...
M. M. Zinchuk
doaj +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1538-1565, July 2026.Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie +11 more
wiley +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Clasts of albite‐porphyroblastic quartzofeldspathic schist, derived from the Otago Schist basement, occur within the Port Chalmers Breccia, a diatreme at the centre of the Dunedin stratovolcano, New Zealand. Schists have undergone varying degrees of replacement reactions (at temperatures of 300° to >500°C) producing hornfelses, with Ca‐ and K‐enriched ...
Alan F. Cooper
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar +6 more
wiley +1 more source
, 2000 The Arkhangelsk kimberlite province (AKP) is situated in the north of the Baltic Shield within the buried southeastern portion of the Kola–Kuloi craton.
H Downes +7 more
core +1 more source
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 +3 more
doaj +1 more source
Kimberlites in the Slave Craton, Northwest Territories, Canada
, 1997 A significant new kimberlite province, which hosts more than 150 kimberlite pipes and is centred in the heart of the Archean Slave Province, was discovered in 1991.
Pell, J. A.
core +1 more source