Results 101 to 110 of about 924 (220)

Inference of minerals at Redondão kimberlite crater, Parnaíba Basin, Brazil, based on interpretation of airborne gamma-ray spectrometry and ASTER data

open access: yesJournal of the Geological Survey of Brazil
This work reports how minerals at Redondão kimberlite pipe may be inferred through integrated interpretation of airborne gamma-ray spectrometry data and multispectral images derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer ...
Adolfo Silva
doaj   +1 more source

The evolution of the crustal stress state of the Catoca kimberlite pipe area (northeastern Angola)

open access: yesГеодинамика и тектонофизика, 2018
This paper presents the first results of the geostructural and tectonophysical studies of the crustal stress state in the Catoca kimberlite pipe area at the southwestern flank of the Kasai Shield in the northeasternAngola. In the evolution of the crustal
O. V. Lunina   +7 more
doaj   +1 more source

Kimberlite-carbonatite relationships revisited: evidence from Khaderpet pipe, Andhra Pradesh, India [PDF]

open access: yes
The 30 ha Khaderpet Pipe is a unique kimberlite – carbonatite association, one of 14 kimberlite pipes discovered by Rio Tinto Exploration (RTX) between 2001-2004 during its prospecting of the Wajrakarur Kimberlite Field (WKF)
Chatterjee, B.   +4 more
core  

Distinct kimberlite pipe classes with contrasting eruption processes [PDF]

open access: yes, 2004
Field and Scott Smith [Field, M., Scott Smith, B.H., 1999. Contrasting geology and near-surface emplacement of kimberlite pipes in southern Africa and Canada. Proc. 7th Int. Kimb. Conf. (Eds.
Marsh, Julian S, Skinner, E M W
core   +1 more source

GENESIS OF EXTREMELY MAGNESIAN DAUGHTER OLIVINE OF SECONDARY MELT INCLUSIONS FROM OLIVINE MACROCRYSTS IN KIMBERLITE FROM THE UDACHNAYA-EAST PIPE (SIBERIAN CRATON)

open access: yesГеодинамика и тектонофизика
The paper presents the results of studies of daughter olivine within secondary melt inclusions marking healed cracks in olivine macrocrysts from unserpentinized kimberlite from the Udachnaya-East pipe.
A. A. Tarasov, A. V. Golovin
doaj   +1 more source

Geostatistical modelling and simulation of uncertainty of a kimberlite pipe. [PDF]

open access: yes, 2014
Understanding uncertainty associated with grades in resource models is an essential requirement for mineral resource evaluation. One of the most important considerations in diamond estimation is the use of an appropriate variable that represents the true
Mjimba, Nqangi.
core  

Felsic xenoliths assimilation in the Renard 65 kimberlite pipe, Québec, Canada [PDF]

open access: yes, 2021
This study constrains the nature of the kimberlite-xenolith reactions, melt temperatures in the crust, and the origin of the fluids in the Renard 65 kimberlite, a Kimberley-type pyroclastic kimberlite (KPK) by focusing on the reaction textures and ...
Niyazova, Sofya
core  

Characteristics of the Deep Structure of the Kimberlite-Controlling Faults of the Arkhangelsk Diamondiferous Province According to the Microseismic Sounding Method. Review

open access: yesRussian Journal of Earth Sciences
Prospecting for kimberlite pipes can be challenging due to their small size in plan. One potential solution to this problem is to search for kimberlite-controlling faults.
Danilov Konstantin
doaj   +1 more source

New identity of the kimberlite melt: Constraints from unaltered diamondiferous Udachnaya-East pipe kimberlite, Russia [PDF]

open access: yes, 2011
Kimberlite magmas are in many aspects unusual compared to other terrestrial magmatic liquids. They are very rare and occur in small volumes, but their intimate relationships with diamonds make them invaluable to the scientific and exploration communities.
Vadim Kamenetsky (14740705)   +2 more
core  

Mantle xenoliths from Komsomolskaya kimberlite pipe, Yakutia: Multistage metasomatism

open access: yesGeosystems and Geoenvironment
Minerals from > 200 mantle xenoliths from Komsomolskaya kimberlite pipe were studied by electron microprobe and LA-ICP-MS. They are metasomatised garnet and spinel peridotites containing phlogopite, amphibole and ilmenite with garnets (up to 12.5 wt ...
Igor V. Ashchepkov   +8 more
doaj   +1 more source

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