Results 31 to 40 of about 2,508 (202)

Typomorphic features of diamonds from ancient sedimentary thick layers of platforms’ central parts

open access: yesМінеральні ресурси України, 2020
Basing on generalization of large actual material on complex investigation of diamond its characteristic in Upper Paleozoic and Mesozoic sedimentary thick layers of the Siberian platform is provided.
M. M. Zinchuk
doaj   +1 more source

XENOLITHS OF POLYMICTIC BRECCIAS FROM KIMBERLITES OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE

open access: yesГеодинамика и тектонофизика, 2022
The polymictic breccias, extremely rare mantle conglomerates being the fragments of rocks and large mantle minerals cemented with fine-grained mass have been long provoking interest of petrologists worldwide.
L. N. Pokhilenko   +2 more
doaj   +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

Аbout use of ancient weathering crusts formation during diamond-prospecting works

open access: yesМінеральні ресурси України, 2021
Complex research of Late Devonian – Early Carboniferous and Middle-Late Triassic weathering crusts on various rocks (terrigenous-carbonate formations, dolerites, tuffs, tuffaceous formations and kimberlites) indicated that in conditions of warm and humid
M. M. Zinchuk
doaj   +1 more source

Processing gravity gradients to detect kimberlite pipes [PDF]

open access: yesASEG Extended Abstracts, 2015
A modelling and pattern recognition-based approach is applied to processing airborne gravity gradient data for kimberlite exploration.
openaire   +1 more source

CO 2 Solubility in Kimberlite melts CO 2 Solubility in Kimberlite melts [PDF]

open access: yes, 2015
International audienceCarbon dioxide is the most abundant volatile in kimberlite melts and its solubility exerts a prime influence on the melt structure, buoyancy, transport rate and hence eruption dynamics.
Gaillard, Fabrice   +4 more
core   +4 more sources

Geochemical properties and transformation of the microelement composition of soils during the development of primary diamond deposits in Yakutia

open access: yesЗаписки Горного института, 2023
Extraction of diamonds from primary deposits in Siberia is associated with the development of kimberlite pipes in challenging environmental conditions, accompanied by a complex impact on the environment. The article presents the results of monitoring the
Yana B. Legostaeva   +3 more
doaj   +1 more source

Titanoclinohumite: A possible mineralogical site for water in the upper mantle [PDF]

open access: yes, 1970
Titanium-rich clinohumite and layered structure minerals are observed in kimberlite and as inclusions in pyropic garnets from the Moses Rock dike, a kimberlite-bearing breccia dike in San Juan County, Utah.
Chodos, A. A.   +2 more
core   +1 more source

Classification of physico-geological models

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2023
Background. A new classification of physico-geological models (PhGM) is presented, which includes system series of models of physico-chemical indicators, geological objects, and geological processes.
V. М. Bondarenko, L. Shavier
doaj   +1 more source

Geochemical criteria for identifying diamond-bearing areas [PDF]

open access: yesE3S Web of Conferences
The paper demonstrates that diamondiferous objects may be pinpointed even by the middle-scale geochemical surveys. Relevant criteria were developed to identify and classify such objects by their prospectivity.
Krinochkin Lev   +4 more
doaj   +1 more source

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