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

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VOLUME 53 (3)/December 2024

Elitsa Zareva
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Valeri Sachanski
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria; Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Lubomir Metodiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Boris Valchev
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Dimitar Sachkov
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Miroslav Slavchev
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Daniel Yanev
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria

Iskar Gorge and Ledenika cave - a brief overview

Stefka Pristavova
University of Mining and Geology, Studentski Grad, Prof, Boyan Kamenov Str., 1700 Sofia, Bulgaria
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Kamelia Marinova
University of Mining and Geology, Studentski Grad, Prof, Boyan Kamenov Str., 1700 Sofia, Bulgaria

Rocks and buildings in the Sofia City center - a geological and historical city tour

Valeri Sachanski
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria; Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Elitsa Zareva
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia, Bulgaria

The Silurian and the Devonian in the Svoge Unit, Western Bulgaria – a brief overview

Juan Carlos Gutiérrez-Marco
Instituto de Geociencias CSIC-UCM, Severo Ochoa 7, 28040 Madrid, Spain
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Sara Romero
Área de Paleontología GEODESPAL, Facultad de Ciencias Geológicas UCM, José Antonio Novais 12, 28040 Madrid, Spain
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Sofia Pereira
Departamento de Ciências da Terra, Centro de Geociências, Universidade de Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal
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Petr Štorch
Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00 Praha 6, Czech Republic

The Ordovician‒Silurian boundary beds in the El Pintado section (Sierra Morena de Sevilla Global UNESCO Geopark, SW Spain)

Annalisa Ferretti
Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, I-41125 Modena, Italy
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Paolo Serventi
Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, I-41125 Modena, Italy
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Giulia Ferrari
Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, I-41125 Modena, Italy
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Maria Giovanna Corriga
Dipartimento di Matematica, Informatica e Geoscienze, Università degli Studi di Trieste, Via Weiss 2, I-34128 Trieste, Italy
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Carlo Corradini
Dipartimento di Matematica, Informatica e Geoscienze, Università degli Studi di Trieste, Via Weiss 2, I-34128 Trieste, Italy

Low-diversity conodont and cephalopod assemblages from the Silurian of the Tinduf Basin, Western Sahara

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

Middle and Upper Devonian depositional settings of the Moesian Terrane (northern Bulgaria)

Pavel B. Kabanov
Geological Survey of Canada, 303–33rd Street N.W., Calgary, Alberta T2L 2A7, Canada

The Devonian of Western Canada Sedimentary Basin: enormous yet underused archive of outcrops and exploration wells for fundamental research

Rezeda Tagarieva
Institute of Geology, Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences (IG UFRC RAS), 16/2 Karl Marx Str., 450000 Ufa, Russia

Conodont biostratigraphy of the Famennian Makarovian Regional Substage in the Kuk-Karauk section, west slope of the Southern Urals

Pavel B. Kabanov
Geological Survey of Canada, 303–33rd Street N.W., Calgary, Alberta T2L 2A7, Canada
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Sezim N. Mustapayeva
Satbayev University, Satbayev 22, Almaty, Kazakhstan
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Svetlana V. Nikolaeva
Natural History Museum, London, SW7 5BD, UK

An Uppermost Famennian section with ammonoids in Karaganda Region, Central Kazakhstan

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

Evolution of the Paleozoic (Silurian-Devonian?) Sredogriv metamorphics, NW Bulgaria

Ulrich Jansen
Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, 60325 Frankfurt am Main, Germany

Revised taxonomy and biostratigraphy of brachiopods from the upper Přídolí-lower Eifelian of the Rhenish Massif (Germany)

John Marshall
School of Ocean and Earth Science, University of Southampton, National Oceanography Centre, Waterfront Campus, Southampton, UK, SO14 3ZH
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Henning Blom
Department of Organismal Biology, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden
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Grzegorz Niedźwiedzki
Department of Organismal Biology, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden
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Martin Qvarnström
Department of Organismal Biology, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden
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Robert Gess
Albany Museum, Grahamstown, Province of the Eastern Cape, Republic of South Africa
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Jessica Whiteside
Department of Geological Sciences, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
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Per Ahlberg
Department of Organismal Biology, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden

The palaeoenvironmental record through a Devonian-Carboniferous boundary super-monsoon lake

DETAILS

VOLUME 53 (2)/August 2024

Nikolay Bonev
Faculty of Geology and Geography, Department of Geology, Paleontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

A new magmatic crystallization age constraint for the Petrota gabbroic complex from the Jurassic Evros ophiolite, eastern Circum-Rhodope Belt, NE Greece

Ivan Genov
Institute of Oceanology, Bulgarian Academy of Sciences, Marine P.O. box 152, 9000 Varna, Bulgaria
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Krasimira Slavova
Institute of Oceanology, Bulgarian Academy of Sciences, Marine P.O. box 152, 9000 Varna, Bulgaria
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Elena Koleva-Rekalova
Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Turhan Doǧan
Marmara Research Center, TUBITAK Gebze Campus, Baris Mah. Dr. Zeki Acar Cad. No: 1 P.K. 21, 41470 Gebze Kocaeli, Turkey

Events and data concerning the Black Sea evolution after the last glacial peak: A comment

Peter Marchev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Raya Raicheva
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

U-Pb monazite and zircon ages of a granite xenolith and its host alkaline basalt from the Byala Reka Dome

Polina Andreeva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Iliana Boncheva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Valeri Sachanski
University of Mining and Geology, Studentski Grad, Prof. Boyan Kamenov Str., 1700 Sofia; Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Microfacies, sea-level fluctuations and conodont biostratigraphy of Frasnian–Famennian carbonate sequences from the Preslavtsi-2 well (the Moesian Platform, NE Bulgaria)

Miroslav Krastanov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Rosen Nankin
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Andrey Aladzhov
National Archaeological Institute with Museum, Bulgarian Academy of Sciences, 2 Saborna Str., 1000 Sofia, Bulgaria
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Nikolai Dobrev
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
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Boyko Berov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Nina Nikolova
Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Valeri Grigorov
National Archaeological Institute with Museum, Bulgarian Academy of Sciences, 2 Saborna Str., 1000 Sofia, Bulgaria
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Antoaneta Frantzova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Geotechnical assessment of the rock massif in the area of the medieval cultural monument Asen’s Fortress, Bulgaria

Stanislav Vassilev
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria
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Christina Vassileva
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria
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Mariya Georgieva
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria
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Borislav Barbov
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria
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Gergana Velyanova
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria
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Svetoslav Georgiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Content, association and potential modes of occurrence of mercury in diverse biomass types and their ecological significance

Georgi Granchovski
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Milen Stavrev
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Atanas Hikov
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Silvia Chavdarova
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Stoyan Georgiev
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Irena Peytcheva
Geological Institute ‘Str. Dimitrov’, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria

Calcareous nannofossil and U-Pb zircon geochronological data on the Coniacian–Santonian in a part of the Central Srednogorie Zone (central South Bulgaria)

DETAILS

VOLUME 53 (1)/April 2024

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

Characterisation of the Lower Palaeozoic sediments in NE Bulgaria for hydrocarbon potential assessment by integrating geochemical and geophysical research data

Desislava Racheva
Earth and Man National Museum, 4 Cherni Vrah Blvd., 1421 Sofia, Bulgaria
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Stefka Dencheva
Faculty of Geology and Geography, Department of Mineralogy, Petrology and Economic Geology, Sofia University “St. Kliment Ohridski”, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Ivanina Sergeeva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Study on different molybdenite polytypes from the Panicherevo deposit, Sarnena Sredna Gora Mountain, Bulgaria

Alexandre Kounov
Department of Environmental Sciences, Basel University, 4056 Basel, Switzerland
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Ianko Gerdjikov
Faculty of Geology and Geography, St. Kliment Ohridski University, 1000 Sofia, Bulgaria

On the Rhodopean protoliths and their Middle Jurassic to Early Cretaceous evolution. A review

Tatiana Orehova
Climate, Atmosphere and Water Research Institute, Bulgarian Academy of Sciences, 66 Tsarigradsko Shose Blvd, 1784 Sofia, Bulgaria
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Aglaida Toteva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Peter Gerginov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Spatial and temporal variations of groundwater contribution to streamflow in the Mesta River Basin

Zlatozar Boev
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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Nedko Nedyalkov
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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Dilian Georgiev
Plovdiv University “Paisiy Hilendarski”, Faculty of Biology, Department of Ecology and Environmental Conservation, 24 Tsar Asen Str., 4000 Plovdiv, Bulgaria
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Nikolai Spassov
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria

Late Pleistocene birds and mammals from the Kiliite Cave (central Stara Planina Mts – central North Bulgaria)

DETAILS

VOLUME 52 (3)/December 2023

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

Regional application of complex groundwater quality indices and mapping for the territory of Bulgaria with possibilities for their use

Tanya Vasileva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Simeon Valtchev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria;
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Aglaida Toteva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria;

Regional characterization of the vulnerability of the unconfined groundwaters in Bulgaria

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

Detrital zircon age constraint on the low-grade sedimentary succession along the Mareshnitsa River Valley, eastern Circum-Rhodope Belt, Bulgaria

Stefan Velev
Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Anna Lazarova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Fatih Karaoglan
Çukurova Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, 01330, Adana, Turkey; Department of Geological Processes, Institute of Geology of the Czech Academy of Sciences, 16500, Prague, Czech Republic
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Oleg Vassilev
Bulgarian Antarctic Institute, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Mahmut Oğuz Selbesoğlu
Department of Geomatics Engineering, Faculty of Civil Engineering, Istanbul Technical University, Istanbul 34469, Turkey

Early Jurassic and Late Cretaceous magmatism on Horseshoe Island, Antarctic Peninsula: New U-Pb and microstructural data

Eleonora Balkanska
Department of Geology, Paleontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Alexandre Kounov
Department of Environmental Sciences, Basel University, 4056 Basel, Switzerland
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Stoyan Georgiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

New advances in the understanding of Bulgarian geology through fission-track analysis – a review

Tsveta Stanimirova
Sofia University “St. Kliment Ohridski”, Faculty of Geology and Geography, Department of Mineralogy, Petrology and Economic Geology, 15 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria
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Georgi Kirov
Center of competency “Clean technologies for sustainable environment – water, waste, energy for circular economy”, 15 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria

Modification of zeolite Na-X, sodalite and cancrinite in salt melts

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