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Your search keyword '"Sachanski, Valeri"' showing total 17 results
Start Over Author "Sachanski, Valeri" Publisher bulgarian geological society
17 results on '"Sachanski, Valeri"'

3. Conodont biostratigraphy, carbonate microfacies and climate changes during the Late Devonain (Frasnian--Famennian) in the Preslavtsi 2 well (Moesian Terrane, NE Bulgaria).

Author

Boncheva, Iliana, Andreeva, Polina, and Sachanski, Valeri

Subjects
CLIMATE change, GLOBAL warming, DEVONIAN Period, BIOSTRATIGRAPHY, MICROBIAL mats, CARBONATES
Abstract

Five conodont zones (falsiovalis, rhenana, triangularis, marginifera, and praesulcata) were recognized within the Upper Devonian carbonate sequence in the Preslavtsi 2 well from the Moesian Terrane in NE Bulgaria. Microfacies study indicates a climate change (from the Subtropical Arid to the Warm Temperate Climatic Zones) recorded in the Frasnian--Famennian succession. Thus, during the Givetian and early Frasnian, sedimentation took place in an arid tidal flat setting, where microbial mats and lagoon carbonates have been formed. In the late Frasnian, a transgression, followed by a rapid regression was recorded that are presumably related to the Late Devonian Kellwasser event. At the beginning of the Famennian, a climate change has occurred and various shallow- and open-marine carbonates have been formed under warm temperate climate conditions. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Taconic orogeny and how it found ground in Bulgaria.

Author

Sachanski, Valeri, Lakova, Iskra, Tanatsiev, Stoyan, Andreeva, Polina, and Kiselinov, Hristo

Subjects
*OROGENY, *STRATIGRAPHIC geology, *MASS extinctions, *PHANEROZOIC Eon, *GRAPTOLITES
Published
2019

14. Digitalization and creation of 3D 360-degree HDR 4K virtual tour with interactive tags of the Museum of Unique Crystals Ilia Deleff, Museum of Geology and Paleontology, Museum of Mineralogy, Petrology and Mineral Resources and Museum of Physics at the University of Mining and Geology St. Ivan Rilski

Author

Marinova, Kameliya, Sachanski, Valeri, Stoykov, Stanislav, Pazderov, Radostin, Banushev, Banush, Vatskicheva, Maya, Zareva, Elitsa, Dimitrov, Martin, Chaush, Beihan, and Kostadinov, Simeon

Subjects
MINES & mineral resources, VIRTUAL tourism, PALEONTOLOGY, MINERALOGY, PETROLOGY, DIGITAL technology, HIGH dose rate brachytherapy
Published
2022

17. Style of deformation and lithological features of the Paleozoic basement in Shipka Stara Planina Mountains.

Author

Balkanska, Eleonora, Georgiev, Stoyan, Vangelov, Dian, Gerdjikov, Ianko, Vangelova, Victoria, Petrov, Ivan, and Sachanski, Valeri

Subjects
PALEOZOIC paleogeography, METAMORPHIC rocks, ROCK deformation, MESOZOIC paleogeography
Abstract

The article discusses the study done to examine the style of deformation and lithological features of the Paleozoic basement in Shipka Stara Planina Mountains in Bulgaria. Topics discussed include presence of pre-Mesozoic basement in Paleozoic low-grade metamorphic rocks in Shipka Stara Planina Mountains, stratigraphy and deformation structure of the Paleozoic basement, and lack of tectonic relationships between the single lithological varieties.

Published
2012

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