Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Valentin Grozdev"'
Publikováno v:
Review of the Bulgarian Geological Society. 83:93-96
The usual main purpose of the zircon investigation is to determine the precise age of particular rocks, applying the U-Pb isotope method. In this study we attempt to reveal the vast potential of zircons in understanding the magmatic and modification
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72db01e54dc3bb1ae2d2b5a64678d164
https://doi.org/10.52215/rev.bgs.2022.83.3.93
https://doi.org/10.52215/rev.bgs.2022.83.3.93
Autor:
Rossitsa D. Vassileva, Svetoslav Petrussenko, Valentin Grozdev, Irena Peytcheva, Yulia Plotkina, Albrecht von Quadt
Publikováno v:
Review of the Bulgarian Geological Society. 83:121-124
Contact Ca-skarns are formed in the marbles of the Malyovitsa Lithotectonic Unit as a result of emplacement of crosscutting pegmatite injections in the area of the Dzhendemski Ezera, NW Rila Mt. Large (up to 4 cm), well-shaped garnet crystals dominat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::216076be19ed952d07eb139db063686b
https://doi.org/10.52215/rev.bgs.2022.83.3.121
https://doi.org/10.52215/rev.bgs.2022.83.3.121
Autor:
Valentin Grozdev, Neven Georgiev, Zlatka Cherneva, Anna Lazarova, Kalin Naydenov, Tsvetelina Gorinova
Publikováno v:
International Journal of Earth Sciences. 108:2129-2152
The Rhodope Metamorphic Complex is a nappe pile of four large allochthonous megaunits, referred to as Lower, Middle, Upper, and Uppermost allochthons. These were originally derived from different paleogeographic provinces and were stacked on top of e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5954b58c28f162a2c73c065e352aff6a
https://doi.org/10.1007/s00531-019-01754-2
https://doi.org/10.1007/s00531-019-01754-2
Autor:
Yulia Plotkina, Milen Stavrev, Albrecht von Quadt, Rossitsa D. Vassileva, Irena Peytcheva, Marcel Guillong, Atanas Hikov, Valentin Grozdev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a6aa0475c1ab23d26bbfa2cbb53e699
https://doi.org/10.7546/crabs.2020.04.11
https://doi.org/10.7546/crabs.2020.04.11
Calcic garnets from grossular-andradite (grandite) series have proven their ability to record the conditions and timing of their formation processes. Typically these minerals occur in skarn systems, together with other calc-silicates (diopside, epido
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a47eb145db10bd8007f37da875bdbf88
https://doi.org/10.5194/egusphere-egu2020-7392
https://doi.org/10.5194/egusphere-egu2020-7392
Publikováno v:
Goldschmidt Abstracts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::433f5a668e5afcf0949610ecdc287353
https://doi.org/10.46427/gold2020.2668
https://doi.org/10.46427/gold2020.2668
Publikováno v:
Geologica Balcanica. 46:143-151
In the present study, we apply a combination of Sr-isotope whole-rock analyses and LA-ICP-MS U-Pb zircon dating to understand the magmatic evolution of the igneous rocks in the Ruen Zone, western Bulgaria, and bracket the time of their formation. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1ec686182b24e4784ec75e6370e45ab
https://doi.org/10.52321/geolbalc.46.2.143
https://doi.org/10.52321/geolbalc.46.2.143
Autor:
Zlatka Cherneva, Valentin Grozdev, Neven Georgiev, Thorsten J. Nagel, Dirk Frei, Silke Jahn-Awe, Nikolaus Froitzheim
Publikováno v:
Georgiev, N, Froitzheim, N, Cherneva, Z, Frey, D, Grozdev, V, Jahn-Awe, S & Nagel, T 2016, ' Structure and U–Pb zircon geochronology of an Alpine nappe stack telescoped by extensional detachment faulting (Kulidzhik area, Eastern Rhodopes, Bulgaria) ', International Journal of Earth Sciences, vol. 105, no. 7, pp. 1985–2012 . https://doi.org/10.1007/s00531-016-1293-4
The Rhodope Metamorphic Complex is a stack of allochthons assembled during obduction, subduction, and collision processes from Jurassic to Paleogene and overprinted by extensional detachment faults since Middle Eocene. In the study area, the followin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d34e631eb41b124d5455224c811f5600
https://doi.org/10.1007/s00531-016-1293-4
https://doi.org/10.1007/s00531-016-1293-4