Results 81 to 90 of about 7,100 (219)

Review of South African research on volcanic and related rocks and mantle-derived materials : 1999-2002 [PDF]

open access: yes, 2003
This report reviews South African research relating to the scientific interests of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) and which was published between 1999 and 2002.
Marsh, J S
core   +1 more source

Chemical Composition of the Mantle [PDF]

open access: yes, 1983
The composition of primitive mantle (54 elements) is estimated by a mass balance approach that does not make a priori assignments of basalt:peridotite ratios or LIL contents of these components.
Anderson, Don L.
core   +1 more source

The formation of ore mineral deposits on the Moon: A feasibility study [PDF]

open access: yes
Most of the ore deposits on Earth are the direct result of formation by hydrothermal solutions. Analogous mineral concentrations do not occur on the Moon, however, because of the absence of water.
Lu, Fengxiang, Taylor, Lawrence A.
core   +1 more source

New Insights into the Concept of Ilmenite as an Indicator for Diamond Exploration, Based on Kimberlite Petrographic Analysis [PDF]

open access: yes, 2017
This study presents results of the initial phase of the research project, "Kimberlites associated to the Lucapa structure, Angola (Africa)", within the framework of a multilateral agreement between the Faculty of Geology Universitat de Barcelona, the ...
Galí Medina, Salvador, 1949-   +3 more
core  

Platinum-group element contents of Karelian kimberlites: implications for the PGE budget of the sub-continental lithospheric mantle [PDF]

open access: yes, 2017
We present high-precision isotope dilution data for Os, Ir, Ru, Pt, Pd and Re in Group I and Group II kimberlites from the Karelian craton, as well as 2 samples of the Premier Group I kimberlite pipe from the Kaapvaal craton. The samples have, on average,
Barnes, Sarah-Jane   +3 more
core   +2 more sources

Estimation of fractionation of minerals using geoinformation systems in engineering and geological prospecting

open access: yesТехнічна інженерія
The article discusses the use of geographic information systems in the study of kimberlite deposits in order to establish diamondiferous content based on indicator minerals, in particular olivine.
N.V. Zuievska   +3 more
doaj   +1 more source

Mapping curie point depth of the west African Craton from satellite magnetic data and its implication for diamond exploration [PDF]

open access: yes, 2015
The main objective of this work is to map the Curie depth of the West African Craton (WAC) using satellite magnetic data with the aim to provide first order evaluation, within this vast territory, for the spatial association between Curie-depth surface ...
Allek, K.   +4 more
core  

The Characteristics and Species Identification of Garnets Hosted in the Kimberlites from Wafangdian, Liaoning Province

open access: yesYankuang ceshi, 2013
The garnets in the kimberlites of the Wafangdian diamond mining area from Liaoning province have previously been identified as pyrope. In order to define the types of the complicated color garnets in Wafangdian, a systematic sampling and analysis of the ...
CHI Guang-cheng   +6 more
doaj  

About primary diamondiferousness of ancient platforms

open access: yesМінеральні ресурси України, 2016
As a result of carried out research and summary of the materials on specific features of diamonds, on the example of the Siberian platform, conclusions were made that indications exist at all levels of their location: from kimberlite – provinces, sub ...
M. M. Zinchuk, V. I. Koptil
doaj  

Density inhomogeneity of the earth's crust along the latitudinal zones of the faults of the Ukrainian shield and the Dnieper-Donets basin

open access: yesГеофизический журнал, 2012
Characteristic of density distribution along latitudinal fault zones and estimated profiles has been given. Possibility has been found of north-south inclination of each of latitudinal fault zones.
V. I. Starostenko   +4 more
doaj   +1 more source

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