Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46886 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Morphology and geochemistry of zircon in bentonite ash at the Paleocene-Eocene boundary in the Anthering Formation, Eastern Alps, Austria Morphology and geochemistry of zircon in bentonite ash at the Paleocene-Eocene boundary in the Anthering Formation, Eastern Alps, Austria Grachev A F Grachev A F Borisovsky S E Borisovsky S E Zinger T F Zinger T F Schmidt Joint Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia ru Schmidt Joint Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia ru Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry IGEM, Russian Academy of Sciences, Moscow, Russia ru Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry IGEM, Russian Academy of Sciences, Moscow, Russia ru Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, St. Petersburg, Russia ru Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, St. Petersburg, Russia ru 14 1 1 17 10 11 2021 https://rjes.ru/en/nauka/article/46886/view

The morphology and concentrations of trace elements and rare earth elements REE of zircon from a transitional layer of bentonite ash at the Paleocene#x2013;Eocene boundary at a locality north of Salzburg in the Eastern Alps suggest a magmatic genesis of the zircon, and data on the REE distribution in the mineral testify to an oceanic nature of the magmas. A more reliable criterion of the nature of the magmatic source is data on the Li concentrations; the latter in some of the zircon grains are much lower than the minimum values typical of the continental crust. It is hypothesized that a zircon type exists that is related to plume magmatism.

The morphology and concentrations of trace elements and rare earth elements REE of zircon from a transitional layer of bentonite ash at the Paleocene#x2013;Eocene boundary at a locality north of Salzburg in the Eastern Alps suggest a magmatic genesis of the zircon, and data on the REE distribution in the mineral testify to an oceanic nature of the magmas. A more reliable criterion of the nature of the magmatic source is data on the Li concentrations; the latter in some of the zircon grains are much lower than the minimum values typical of the continental crust. It is hypothesized that a zircon type exists that is related to plume magmatism.

Zircon Paleocene and Eocene bentonite geochemistry Eastern Alps Zircon Paleocene and Eocene bentonite geochemistry Eastern Alps

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