Results 41 to 50 of about 924 (220)

Geochemistry and petrogenesis of kimberlite intrusions from the eastern lobe the Du Toitspan kimberlite pipe, South Africa [PDF]

, 2020
The Du Toitspan kimberlite pipe located on the outskirts of Kimberley South Africa, is one four Cretaceous aged major kimberlite pipes from the well-known Kimberley cluster, the type locality for archetypal group I kimberlites.
Ramokgaba, Lesego
core   +1 more source

Geological constraints on the eruption of the Jwaneng Centre kimberlite pipe, Botswana [PDF]

, 2008
Geological mapping has allowed constraints to be placed on the eruption mechanisms involved in the formation of the Late Permian–Early Triassic Jwaneng Centre kimberlite pipe, Botswana.
Stiefenhofer, J., Brown, RJ, Brown, R.J., Field, M, Field, M., Gernon, TM, Gernon, T., Stiefenhofer, J   +7 more
core   +1 more source

THE FEATURES OF THE INDICATOR MINERALS OF KIMBERLITES IN A NEW PIPE YANVARSKAJA (WESTERN YAKUTIA)

Известия высших учебных заведений: Геология и разведка, 2017
The first results of the mineral-petrographic studies of microclastes of kimberlites from the basal horizon of the Upper Paleozoic deposits of the Alakit-Markhinsky kimberlite field (Western Yakutia) have been presented.
D. V. Ivanov, V. V. Ivanov, A. V. Tolstov   +2 more
doaj   +1 more source

Lamprophyre sites of Wajrakarur Kimberlite Field, Southern India: Potential candidates for developing as geoparks

International Journal of Geoheritage and Parks, 2023
This article presents field description of lamprophyres of the Wajrakarur Kimberlite Field (WKF) emphasising their geoscientific potential to develop and popularize them as geoparks.
Pothuri Ramesh Chandra Phani, Madabhooshi Srinivas, Ioannis Kamvisis, Rokalla Ananda Reddy   +3 more
doaj   +1 more source

Hydrothermal alteration of kimberlite by convective flows of external water. [PDF]

Contrib Mineral Petrol, 2014
Kimberlite volcanism involves the emplacement of olivine-rich volcaniclastic deposits into volcanic vents or pipes. Kimberlite deposits are typically pervasively serpentinised as a result of the reaction of olivine and water within a temperature range of
Afanasyev AA, Melnik O, Porritt L, Schumacher JC, Sparks RS.   +4 more
europepmc   +3 more sources

XENOLITHS OF POLYMICTIC BRECCIAS FROM KIMBERLITES OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE

Геодинамика 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, N. P. Pokhilenko, V. P. Afanasiev   +2 more
doaj   +1 more source

Competence and lithostratigraphy of host rocks govern kimberlite pipe morphology [PDF]

, 2018
We use analogue experimentation to test the hypothesis that host rock competence primarily determines the morphology of kimberlite pipes. Natural occurrences of kimberlite pipes are subdivided into three classes: class 1 pipes are steep-sided diatremes ...
Amy G. Ryan, Luke J. Hilchie, David E. Newton   +2 more
core   +1 more source

Revealing the Magmatic Impulse Emplacement and Evolution Path of Kimberlite in Southern Liaoning through Mineralogical Characteristics of the Phlogopite Zone

Applied Sciences
Phlogopite is a crucial indicator for effectively constraining the magmatic evolution and emplacement mechanism of kimberlite. In this study, samples were collected from the No. 110 kimberlite pipe within diamond belt I and the No.
Sishun Ma, Ende Wang, Haitao Fu
doaj   +1 more source

Petro- and paleomagnetic characteristics of the structural–material complexes of the diamond mining of the Nyurbinskaya pipe (Middle Markha district, West Yakutia)

Геодинамика и тектонофизика, 2017
Modeling of physical and geological properties of a study object is an integral part of geological surveys at each stage. Without a model of physical and geological properties (PhGM) it is impossible to obtain a complete set of reflection indicators of ...
K. M. Konstantinov, А. A. Yakovlev, Т. А. Antonova, I. К. Konstantinov, Sh. Z. Ibragimov, E. V. Artemova   +5 more
doaj   +1 more source

Incipient stages of transformation of round natural diamonds under dissolution in Fe-S melt at high pressure

Литосфера, 2020
Research subject. The article presents the results of a microscopic and photogoniometric study of natural rounded diamonds of tetraghexahedral habit from the kimberlite pipe “Internationalnaya” (Yakutia). The diamonds was partially dissolved in a sulphur-
V. M. Sonin, E. I. Zhimulev, A. A. Chepurov, B. S. Pomazanskiy, V. P. Afanasiev, A. I. Chepurov   +5 more
doaj   +1 more source