Results 111 to 120 of about 2,766 (215)

Magmaclasts in kimberlite

open access: yesInternational Kimberlite Conference Extended Abstracts: 2017, 2019
Abstract This contribution presents an updated descriptive scheme for magmaclasts in kimberlite, resulting from over 40 combined years of mapping, logging, and petrographic studies by the authors of hundreds of kimberlites and related rocks globally.
openaire   +2 more sources

Ways of increasing efficiency of diamondieferous kimberlites prospecting (on the example of the Siberian platform)

open access: yesМінеральні ресурси України, 2015
Carried out analysis of the material on diamondiferousness of the Siberian platform allows affirming that in spite of the large volume of the obtained for more than half a century period actual material there is a number of problem issues decision of ...
M. M. Zinchuk
doaj  

Perturbation of the deep-Earth carbon cycle in response to the Cambrian Explosion. [PDF]

open access: yesSci Adv, 2022
Giuliani A   +9 more
europepmc   +1 more source

A study of unusual diamonds from the George Creek K1 Kimberlite dyke, Colorado

open access: yes, 1995
Cathodoluminescence photomicrographs of diamonds from the George Creek Kl (section 28) kimberlite dyke in Colorado reveal complex intergrowth relationships between CO?-free and CO?-bearing diamond growth generations.
Chinn, Ingrid Lee
core  

Kimberlites, megacrysts and related xenocrysts from southern and Central Africa: geochemistry and petrology

open access: yes, 2019
Kimberlites, megacrysts and related xenocrysts from twelve localities in central and southern Africa have been investigated with particular emphasis on megacryst petrogenesis, the evolution of the subcontinental lithospheric mantle (SCLM) beneath the ...
Nkere, Buliba
core  

Specification of criteria of diagnostics of kimberlites of Yakutia: Petrochemistry and mineralogy

open access: yes, 2020
To improve specification accuracy for investigated basic-ultrabasic rocks of Yakutian diamond-bearing province, mineralogical criteria (micas and perovskites) were additionally applied.
Tsepin A.I., Golubeva Yu.Yu.
core  

Time constraints on the formation of lithospheric mantle beneath cratons: a re-Os isotope and platinum group element study of peridotite xenoliths from northern Canada and Lesotho, [PDF]

open access: yes, 2001
Understanding the generation and evolution of cratonic lithospheric keels requires detailed knowledge of their age, timescale of formation, and the relationship between the crust and mantle part of the lithosphere.
Irvine, Gordon James
core  

Structure des peridotites en enclave dans les kimberlites d'Afrique du sud

open access: yes, 1975
The peridotite xenoliths from kimberlites are classified into three textural groups and seven textural subtypes: the coarse-grained textures (equant or tabular), the flaser textures (porphyroclastic, mosaic and mosaic fluidal), and the secondary textures
Boullier, Anne-Marie
core  

Djerfisherite in kimberlites and their xenoliths: implications for kimberlite melt evolution

open access: yes, 2019
Djerfisherite (K6(Fe,Ni,Cu)25S26Cl) occurs as an accessory phase in the groundmass of many kimberlites, kimberlite-hosted mantle xenoliths, and as a daughter inclusion phase in diamonds and kimberlitic minerals.
Karsten Goemann (14737597)   +8 more
core  

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