Nurali ophiolite massif (the Southern Urals): geological, structural, and mineralogical features
Автор: Saveliev D.E., Ankusheva N.N.
Журнал: Вестник Пермского университета. Геология @geology-vestnik-psu
Рубрика: Петрология, вулканология
Статья в выпуске: 3 т.17, 2018 года.
Бесплатный доступ
An overview of a geological structure of Nurali massif is presented. Compositional data of ultramafic rocks from mantle section and transitional mantle-crust assemblages, and chemistry of accessory and ore-forming Cr spinels are examined. We showed that ultramafic rocks from mantle section (spinel a spinel-plagioclase peridotites, harzburgites, dunites) are the tectonites. They have a strong predominantly optical orientation of rock-forming olivine due to a plastic flow of rocks. We presented different points of view on the mantle-crust assemblage origin, which composed by wehrlites, clinopyroxenites, vebsterites, dunites and melanocratic gneiss-like gabbro, and described two PGE-occurrences in the chromitites of this ophiolite section unit. This paper is based on a guidebook of an International field trip to Nurali massif as a part of conference “Magmatism of the Earth and related deposits of strategic metals” held in 2017 August.
Ophiolite, ultramafic rocks, cr spinels, pge-minerals, southern urals, nurali
Короткий адрес: https://sciup.org/147245006
IDR: 147245006 | DOI: 10.17072/psu.geol.17.3.228
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