Zobrazeno 1 - 10
of 50
pro vyhledávání: '"D. D. van Reenen"'
Autor:
A. S. Mityaev, O. G. Safonov, D. A. Varlamov, D. D. van Reenen, A. A. Serdyuk, L. Ya. Aranovich
Publikováno v:
Doklady Earth Sciences. 507:1064-1070
Publikováno v:
Petrology. 30:278-304
Autor:
O. P. Izokh, V. M. Kozlovskii, D. D. van Reenen, V.N. Reutsky, Oleg G. Safonov, Leonid Aranovich, A. S. Mityaev, Dmitry A. Varlamov
Publikováno v:
Doklady Earth Sciences. 492:342-345
Data on the carbon and oxygen isotopic composition of carbonates from the rocks of the Giyani greenstone belt, Kaapvaal craton, South Africa are presented. This belt is immediately adjacent to the Hout River Shear Zone, along which the Southern Margi
Publikováno v:
South African Journal of Geology. 122:455-488
The paper reviews published and unpublished geological data pertaining to the structural and metamorphic controls, rock types, characteristic features, source, and timing of hypozonal orogenic gold mineralization in the Giyani Goldfield. The Giyani G
Autor:
D. D. van Reenen, Dmitry A. Varlamov, V. D. Shcherbakov, V.N. Reutsky, Vasiliy O. Yapaskurt, Oleg G. Safonov, Maria A. Golunova
Publikováno v:
Doklady Earth Sciences. 483:1515-1518
Data on the carbon isotope composition of graphite and CO2 from inclusions in quartz of granitoids of the Southern Marginal Zone (SMZ) of the Limpopo granulite belt, South Africa, are presented. The average values of δ13C for graphite and СО2 from
Publikováno v:
Lithos. 322:67-86
The study presents field, petrographic, mineral chemical, bulk-rock geochemical, U–Pb zircon and 40Ar/39Ar amphibole-biotite geochronologic characteristics of the Singelele leucogranite, which constitutes a prominent Neoarchean magmatic event in th
Autor:
V. G. Butvina, Dmitry A. Varlamov, A. S. Mityaev, Maria A. Golunova, G.A. Belyanin, C.A. Smit, D. D. van Reenen, Oleg G. Safonov, Vasiliy O. Yapaskurt
Publikováno v:
Petrology. 26:617-639
The paper summarizes data on the petrology of granitoid intrusions in the Southern Marginal Zone (SMZ) of the Neoarchean Limpopo granulite complex, South Africa, and discusses the thermal and fluid effects of these intrusions on the granulites. The i
Publikováno v:
Tectonophysics. 746:572-586
Mechanisms of Precambrian orogeny and their contribution to the origin of ultrahigh temperature granulites, granite-greenstone terranes and net crustal growth remain debatable. Here, we use 2D numerical models with 150 °C higher mantle temperatures
Publikováno v:
Lithos. :431-451
Neoarchean TTG-sanukitoid associations of contrasting scales occur within the Beit Bridge Complex terrane of the Limpopo Complex in southern Africa. These include the smaller ~ 2.65–2.63 Ga Avoca granitoid and the voluminous ~ 2.73–2.64 Ga Allday
Publikováno v:
Lithos. :105181
Archean tonalite-trondhjemite-granodiorite (TTG) rocks are generally amphibole- and/or biotite-bearing. Pyroxene-bearing granitoids of TTG affinity are less commonly reported. This study evaluates the range in composition and petrogenesis of pyroxene