Founded 1934 by Prof. Dr Stefan Bončev
A Geo-Sciences Journal of the Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences
Official Journal of the Carpathian-Balkan Geological Association

OUR JOURNAL

CURRENT ISSUE: VOLUME 51 (3)/December 2022

DETAILS

Ruslan Kostov
University of Mining and Geology “St Ivan Rilski”, Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Hristo Protohristov
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd, 1784 Sofia, Bulgaria
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Savka Marinova
Faculty of Physics and Technology, Plovdiv University “Paisiy Hilendarski”, 24 Tsar Asen Str., 4000 Plovdiv, Bulgaria
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Gergana Hristozova
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Latchesar Kostov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Ivanka Tringovska
Maritsa Vegetable Crops Research Institute, 32 Brezovsko Shose Blvd, 4003 Plovdiv, Bulgaria
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Inga Zinicovscaia
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Konstantin Vergel
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Dmitrii Grozdov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Sergey S. Pavlov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Lyudmila P. Strelkova
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia

Tracing impact events in clay samples with iridium anomaly at and above the Cretaceous/Paleogene boundary at Byala, Eastern Bulgaria

Zlatozar Boev
National Museum of Natural History, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria

Studia breviora: Additional material of Buteo spassovi Boev & Kovachev, 1998 from the Upper Miocene locality Hadzhidimovo (Blagoevgrad region, SW Bulgaria)

Plamen Ivanov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Nikolai Dobrev
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Boyko Berov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Antoaneta Frantzova
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Miroslav Krastanov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Rosen Nankin
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Landslide risk for the territory of Bulgaria by administrative districts

DETAILS

VOLUME 52 (1)/April 2023

Nikoleta Tzankova
Department of Mineralogy and Petrography, University of Mining and Geology “St Ivan Rilski”, 1700 Sofia, Bulgaria

LA-ICP-MS study of malachite from copper deposits in the Rosen ore field, Burgas ore district, SE Bulgaria

Boyka Mihaylova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Georgi Bonchev’s paper “Contribution to the springs in Bulgaria”, 1939, and its significance for hydrogeology in Bulgaria

DETAILS

VOLUME 51 (3)/December 2022

Ruslan Kostov
University of Mining and Geology “St Ivan Rilski”, Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Hristo Protohristov
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd, 1784 Sofia, Bulgaria
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Savka Marinova
Faculty of Physics and Technology, Plovdiv University “Paisiy Hilendarski”, 24 Tsar Asen Str., 4000 Plovdiv, Bulgaria
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Gergana Hristozova
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Latchesar Kostov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Ivanka Tringovska
Maritsa Vegetable Crops Research Institute, 32 Brezovsko Shose Blvd, 4003 Plovdiv, Bulgaria
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Inga Zinicovscaia
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Konstantin Vergel
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Dmitrii Grozdov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Sergey S. Pavlov
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia
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Lyudmila P. Strelkova
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 1419890 Dubna, Russia

Tracing impact events in clay samples with iridium anomaly at and above the Cretaceous/Paleogene boundary at Byala, Eastern Bulgaria

Zlatozar Boev
National Museum of Natural History, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria

Studia breviora: Additional material of Buteo spassovi Boev & Kovachev, 1998 from the Upper Miocene locality Hadzhidimovo (Blagoevgrad region, SW Bulgaria)

Plamen Ivanov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Nikolai Dobrev
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Boyko Berov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Antoaneta Frantzova
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Miroslav Krastanov
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Rosen Nankin
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Landslide risk for the territory of Bulgaria by administrative districts

Gergana Meracheva
Faculty of Geology and Exploration, University of Mining and Geology, 1700 Sofia, Bulgaria
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Efrosima Zaneva-Dobranova
Faculty of Geology and Exploration, University of Mining and Geology, 1700 Sofia, Bulgaria
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Nikolay Hristov
Faculty of Geology and Exploration, University of Mining and Geology, 1700 Sofia, Bulgaria

Seismic characterization analyses of the Bulgarian Black Sea shelf for assessment of reservoir properties

Irena Peytcheva
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Rositsa Ivanova
Geological Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Report on the XXII International Congress of the Carpathian Balkan Geological Association (CBGA) in Plovdiv, Bulgaria, September 7–11, 2022

Boriana Tchakalova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Plamen Ivanov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Correlation between effective cohesion and plasticity index of clay

András Galácz
Department of Palaeontology, Eötvös L. University, Pázmány Péter sétány 1/c, 1117 Budapest, Hungary

Occurrence of the peculiar ammonites Phlycticeras and Oecoptychius in the Callovian (Middle Jurassic) of the Villány Hills (South Hungary)

Momchil Dyulgerov
Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Tanya Stoylkova
Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria

Mineralogical and geochemical characteristics of the Sedemte Prestola potassic alkaline pluton

Ilonka Koleva
Department of University Archive, Sofia University “St Kliment Ohridski, 15 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria

The archive of Professor Georgi Zlatarski – knowledge source of the foundation of geology and paleontology in Bulgaria

Angel Kunov

In memoriam: Professor Milko Manolov Kanazirski, DSc (May 28, 1936 – August 04, 2022)

DETAILS

VOLUME 51 (2)/August 2022

Silvia Chavdarova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Milen Stavrev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Atanas Hikov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Irena Peytcheva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

New data on the geochemical and mineralogical features of the main manganese- and iron-bearing ore occurrences in the Central Srednogorie Zone, Bulgaria

Doncho Karastanev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Boriana Tchakalova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Dimitar Antonov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Field experiment of cement-modified loess

Zlatka Milakovska
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Atanas Hikov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Valcana Stoyanova
Interoceanmetal Joint Organization, 9 Cyryla i Metodego Str., 71-541 Szczecin, Poland
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Irena Peytcheva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Valentina Lyubomirova
Faculty of Chemistry and Pharmacy, Sofia University “St Kliment Ohridski”, 1 James Bourchier Blvd, 1164 Sofia, Bulgaria
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Tomasz Abramowski
Maritime University of Szczecin, 1/2 Wały Chrobrego, 70-500 Szczecin, Poland

REY in pore waters of sediments hosting Fe-Mn nodules of the Interoceanmetal exploration area in the Clarion-Clipperton Fracture Zone, NE Pacific

Lilia Dodekova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Ivo Sapunov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Dinoflagellate cyst biostratigraphy of the Bathonian, Callovian, and the Upper Jurassic in North Bulgaria

Mariana Yossifova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Dimitrina Dimitrova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Milena Vetseva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Stoyan Georgiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Yana Tzvetanova
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria

Preliminary data on critical element contents in lignite from the Maritsa East basin, Bulgaria

Alexander Vlahov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

XRD-based crystallinity degrees and formation temperature of graphite in some regional-metamorphic rocks from the Central and Eastern Rhodopes, Bulgaria: a test of the new graphitization degree GD(0–30) scale

Georgi Milenkov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Rossitsa Vassileva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Sylvina Georgieva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Valentin Grozdev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Irena Peytcheva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Trace-element signatures and U-Pb geochronology of magmatic and hydrothermal titanites from the Petrovitsa Pb-Zn deposit, Madan region, Central Rhodopes (Bulgaria)

Editorial Board

Editorial

DETAILS

VOLUME 51 (1)/April 2022

Avtandil Okrostsvaridze
Institute of Earth Sciences, Ilia State University, 77 Ntsubidze Str., 0177 Tbilisi, Georgia
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David Bluashvili
Faculty of Mining and Geology, Georgian Technical University, Kostava Str., 0175 Tbilisi, Georgia
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Salome Gogoladze
Institute of Earth Sciences, Ilia State University, 77 Ntsubidze Str., 0177 Tbilisi, Georgia
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Rabi Gabrielashvili
Faculty of Mining and Geology, Georgian Technical University, Kostava Str., 0175 Tbilisi, Georgia

The discovery of U mineralization in the late Variscan plagiogranite vein of the Shkhara crystalline massif (Greater Caucasus, Georgia)

Boriana Tchakalova
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Tzvetoslav Iliev
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Scanning electron microscopy investigation of loess soil stabilized with cement and natural zeolite

Nikolay Bonev
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Petyo Filipov
Geological Institute of Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Tanya Stoylkova
Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria

Chemical composition of late Eocene–early Oligocene corals in reef buildups from the Thrace basin, Bulgaria–Greece: Paleoenvironmental implications

Lubomir Metodiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Elena Koleva-Rekalova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Silviya Petrova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Docho Dochev
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Louiza Dimowa
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria

New data on the stratigraphy of the Middle Jurassic siliciclastic rocks from the West Balkan Mountains (West Bulgaria)

Madlena Tsvetkova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Comparison between the geological settings of the Varbitsa (NW Bulgaria) and Bure (SE France) sites for geological disposal of radioactive waste

Editorial Board

22nd Congress of the Carpathian-Balkan Geological Association (CBGA2022), 7–11 September 2022, Plovdiv (Bulgaria)

DETAILS

VOLUME 50 (3)/December 2021

Vladimir Hristov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Nikolay Stoyanov
University of Mining and Geology “St Ivan Rilski”, 1700 Sofia, Bulgaria
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Simeon Valchev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Aleksey Benderev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

The thermal waters in Sofia City (Bulgaria): importance, condition and problems

Svetoslav Petrussenko
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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Chavdar Karov
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria

The mineral diversity of the Urdini Lakes and the glacial valley of the Urdina River (Rila Mountain) – an overview

Boriana Tchakalova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Boyko Berov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Correlation between the liquid limit of clay derived by the Vasiliev and Casagrande test methods

Antoaneta Frantzova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Risk assessment of geological disaster in the region of Primorsko Municipality

Pages

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Bulgarian Academy of Sciences, Geological Institute, Bulgaria
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Bulgarian Academy of Sciences, Central laboratory of Mineralogy and Crystallography, Bulgaria
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Sofia University, Department of Mineralogy, Petrology, Ores and Minerals, Bulgaria
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GEOLOGICAL INSTITUTE “STRASHIMIR DIMITROV”

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