Results 91 to 100 of about 924 (220)

NEW TECHNIQUES FOR TRACE ELEMENT AND RADIOGENIC ISOTOPE MEASUREMENT OF DIAMONDS: THEIR APPLICATION TO DIAMOND PETROGENESIS AND SOURCE TRACING [PDF]

, 2011
To investigate impurities in diamond we have developed an offline laser ablation method to acquire radiogenic isotope compositions and quantitative trace element determinations on diamond.
MCNEILL, JOHN,CHARLES,ROBERT
core  

Tracing Deep Carbon Cycling by Zinc Isotopes in a Peralkaline‐Carbonatite Suite

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 4, April 2024.
Abstract Sedimentary carbonates are known to be carried into the deep mantle by subducted slabs, and studies on mantle‐derived magmas have attempted to trace the recycled carbonate in their mantle source. However, the final depth of storage of recycled carbonate and the role of recycled carbonate in the partial melting of mantle remain controversial ...
Bowen Wei, Zhaochong Zhang, Zhiguo Cheng, Qiuhong Xie, M. Santosh, Weiliang Kong, Bingxiang Liu, Marc K. Reichow, Yingjie Li   +8 more
wiley   +1 more source

Role of Metasomatism in the Development of the East African Rift at the Northern Tanzanian Divergence: Insights From 3D Magnetotelluric Modeling

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 1, January 2024.
Abstract The Northern Tanzanian Divergence in the East Africa Rift is arguably the best place on Earth to study the controls on rifting of thick lithosphere. Here, where the East Africa Rift intersects the Tanzanian Craton and the Mozambique Belt, the relationships between volcanism, faulting, pre‐existing structures and lithospheric thickness and ...
Sinan Özaydın, Kate Selway, Stephen F. Foley, Isra S. Ezad, William L. Griffin, Pascal S. Tarits, Sophie Hautot   +6 more
wiley   +1 more source

The Relationship Between Diamondiferous Kimberlite and Peridotite from the Cullinan Pipe, South Africa [PDF]

, 2021
The ~1.15 billion-year-old (Ga) Cullinan kimberlite pipe is composed of several lithologically distinct kimberlite facies (Grey, Brown, Pale Piebald, Dark Piebald, Black Coherent, Blue/Brown Transitional, and Fawn).
Linzmeyer, Taryn
core  

PREDICTION OF THE PRIMARY SOURCES OF GIANT CLIPPIR DIAMONDS IN THE NORTH OF YAKUTIA BY THE METHOD OF MINERALOGICAL AND GEOCHEMICAL ANALOGY (METHOD 5E DIAGRAMS)

Геодинамика и тектонофизика
The finds of giant CLIPPIR-type diamonds in the placers hosted by the Ebelyakh River basin in the north of Yakutia suggest that similar diamonds can be found in the kimberlites of the Anabar region and the nearest northern deposits located within the ...
A. S. Ivanov, V. N. Zinchenko, I. V. Ashchepkov, S. A. Babushkina, O. B. Oleinikov, P. N. Shelkov   +5 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

Study site and fossil wood from the Panda kimberlite pipe. [PDF]

, 2013
A. Location of the Ekati diamond mine. B. Situation of the Panda kimberlite in relation to other pipes that comprise the property. C. Morphology of the Panda kimberlite pipe [8] and occurrence of wood. D.
Alexander P. Wolfe (250801), Ryan C. McKellar (306963), Alberto V. Reyes (306961), Ralf Tappert (306965), Adam Z. Csank (306960), Karlis Muehlenbachs (306967)   +5 more
core   +1 more source

Some major problems with existing models and terminology associated with kimberlite pipes from a volcanological perspective, and some suggestions [PDF]

, 2008
Five significant problems hinder advances in understanding of the volcanology of kimberlites: \ud \ud (1) kimberlite geology is very model driven; \ud \ud (2) a highly genetic terminology drives deposit or facies interpretation; \ud \ud (3) the effects ...
Cas, R.A.F., Pittari, A., Porritt, L., Cas, R. A. F., Hayman, P.   +4 more
core   +1 more source

Three‐dimensional structural‐material models of the formation of the Nyurbinskaya and Botuobinskaya kimberlite pipes (Yakutian Diamondiferous Province, Russia)

Геодинамика и тектонофизика, 2019
The Nyurbinskaya and Botuobinskaya kimberlitic pipes were in the focus of a comprehensive study aimed to investigate their structural and material positions as the main deposits in the Nakyn field (Yakutian Diamondife‐ rous Province, Russia).
E. V. Serebryakov, A. S. Gladkov, D. A. Koshkarev   +2 more
doaj   +1 more source

Hydrogeological features of the field of kimberlite pipe Udachnaya [PDF]

, 2016
The hydrogeological characteristics of the deposits kimberlite pipe Udachnaya are presented, the hydrogeological characteristics of the main aquifer complexes are given. The main source of water cut of the ore bodies are identified.
Fomenko, S. V.
core