Tag: Ukrainian Carpathians

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ASPECTS OF LITHOGENESIS OF OIL- AND GAS-BEARING MESOZOIC-CENOZOIC SEQUENCE OF THE CARPATHIAN REGION

Home > Archive > No. 1 (201) 2026 > 5–20

Geology & Geochemistry of Combustible Minerals No. 1 (201) 2026, 5–20

ISSN 0869-0774 (Print), ISSN 2786-8621 (Online)

https://doi.org/

Natalia RADKOVETSa, Yuriy KOLTUNb, Ihor POPPc, Marta MOROZd, Yuliia HAIEVSKAe, Halyna HAVRYSHKIV f, Petro MOROZg

Institute of Geology and Geochemistry of Combustible Minerals of the National Academy of Sciences of Ukraine, Lviv, Ukraine

a e-mail: radkov_n@ukr.net, https://orcid.org/0000-0002-1770-6996
b https://orcid.org/0000-0001-9884-5957
c https://orcid.org/0000-0002-7459-0037
d https://orcid.org/0009-0001-3695-2682
e https://orcid.org/0009-0006-8947-3913
f https://orcid.org/0009-0002-3376-8895
g https://orcid.org/0009-0007-5997-5768

Abstract

Although the Lower Cretaceous deposits of the northern slope of the Ukrainian Carpathians do not contain commercial hydrocarbon accumulations, but only individual oil and gas shows, the conducted studies have demonstrated that they remain a prospective object for further petroleum exploration. It has been established that in the sedimentary formations of the Upper Cretaceous, granular porous and mixed (pore-fractured) reservoirs with good filtration-capacity properties, associated with “Yamna-like” sandstones, are widespread. Mineralogical and petrographic studies of psammitic strata of the Paleocene and Eocene allowed us to study the features of their lithological and facial variability and to assess the patterns of distribution of these layers, both laterally and in the section within the Boryslav-Pokuttya and frontal nappes of the Skyba units of the Ukrainian Carpathians in terms of the prospects of their oil and gas bearing. The conducted reconstructions of the sedimentary environments of the Paleocene and Eocene flysch strata made it possible to establish the sources of terrigenous material entering the sedimentary basin. Lithological and geochemical studies of Oligocene sediments have allowed us to study the patterns of their facial variability, both in terms of the distribution of psammitic strata, which are reservoir rocks for oil and gas, and of the organic-rich Menilite beds. As studies have shown, the latter undergo significant changes in the direction from the Boryslav-Pokuttya and Skyba to the Krosno zone, changing not only the thickness and volume of oil and gas-generating rocks, but also their thermal maturity, and therefore the range of depths of oil and gas hydrocarbons generation zones. The Upper Jurassic sediments of the basement of the Outer zone of the Carpathian Foredeep represent one of the main oil and gas-bearing complexes of Western Ukraine. The conducted studies have allowed us to obtain new results regarding the patterns of distribution of different types of reservoir rocks within these strata.

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Keywords

Ukrainian Carpathians, Carpathian Foredeep, lithogenesis, facies, oil and gas generation potential, reservoir rocks

Referenses

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Havryshkiv, H. Ya., & Haievska, Yu. P. (2021). Fatsialni osoblyvosti paleotsen-eotsenovykh vidkladiv peredovykh skyb Skybovoi zony Ukrainskykh Karpat. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(185–186), 44–55. https://doi.org/10.15407/ggcm2021.03-04.044 [in Ukrainian]

Havryshkiv, H., & Radkovets, N. (2020). Paleocene deposits of the Ukrainian Carpathians: geological and petrographic characteristics, reservoir properties. Baltica, 33(2), 109–127. https://doi.org/10.5200/baltica.2020.2.1

Koltun, Y. V. (1992). Organic matter in Oligocene Menilite formation rocks of the Ukrainian Carpathians: palaeoenvironment and geochemical evolution. Organic Geochemistry, 18(4), 423–430. https://doi.org/10.1016/0146-6380(92)90105-7

Koltun, Yu. V. (2000). Heneratsiia vuhlevodniv u flishovykh vidkladakh Vnutrishnoi zony Peredkarpatskoho prohynu. Heolohiia i heokhimiia horiuchykh kopalyn, 4, 26–33. [in Ukrainian]

Kotarba, М. J., Bilkiewicz, E., Więcław, D., Radkovets, N. Y., Koltun, Y. V., Kowalski, A., Kmiecik, N., & Romanowski, T. (2020). Origin and migration of oil and natural gas in the central part of the Ukrainian outer Carpathians: Geochemical and geological approach. AAPG Bulletin, 104(6), 1323–1356. https://doi.org/10.1306/01222018165

Kotarba, М. J., Więcław, D., Bilkiewicz, E., Radkovets, N. Y., Koltun, Y. V., Kmiecik, N., Romanowski, T., & Kowalski, A. (2019). Origin and migration of oil and natural gas in the western part of the Ukrainian Outer Carpathians: Geochemical and geological approach. Marine and Petroleum Geology, 103, 596–619. https://doi.org/10.1016/j.marpetgeo.2019.02.018

Krupskyi, Yu. Z., Kurovets, I. M., Senkovskyi, Yu. M., Mykhailov, V. A., Chepil, P. M., Dryhant, D. M., Shlapinskyi, V. Ye., Koltun, Yu. V., Chepil, V. P., Kurovets, S. S., & Bodlak, V. P. (2014). Netradytsiini dzherela vuhlevodniv Ukrainy: Kn. 2. Zakhidnyi naftohazonosnyi rehion. Kyiv: Nika-Tsentr. [in Ukrainian]

Moroz, M. V. (2023). Litohenez verkhnoiurskykh vidkladiv Zovnishnoi zony Peredkarpatskoho prohynu. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(191–192), 105–121. https://doi.org/10.15407/ggcm2023.191-192.105 [in Ukrainian]

Popp, I., Havryshkiv, H., Haievska, Yu., Moroz, P., & Shapovalov, M. (2023). Evoliutsiia umov sedymentohenezu v karpatskomu flishovomu baseini v kreidi–paleoheni. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(191–192), 86–104. https://doi.org/10.15407/ggcm2023.191-192.086 [in Ukrainian]

Popp, I., Moroz, P., & Shapovalov, M. (2019). Litoloho-heokhimichni typy kreidovo-paleohenovykh vidkladiv Ukrainskykh Karpat ta umovy yikhnoho formuvannia. Heolohiia i heokhimiia horiuchykh kopalyn, 4(181), 116–133. https://doi.org/10.15407/ggcm2019.04.116 [in Ukrainian]

Popp, I., Shapovalov, M., & Moroz, P. (2018). Mineralohichnyi ta heokhimichnyi aspekt problemy slantsevoho hazu (na prykladi chornykh arhilitiv zakhodu Ukrainy). Mineralohichnyi zbirnyk, 1(68), 184–186. [in Ukrainian]

Senkovskyi, Yu. M., Hryhorchuk, K. H., Koltun, Yu. V., Hnidets, V. P., Radkovets, N. Ya., Popp, I. T., Moroz, M. V., Moroz, P. V., Rever, A. O., Haievska, Yu. P., Havryshkiv, H. Ya., Kokhan, O. M., & Koshil, L. B. (2018). Litohenez osadovykh kompleksiv okeanu Tetis. Karpato-Chornomorskyi sehment. Kyiv: Naukova dumka. [in Ukrainian]

Senkovskyi, Yu. M., Koltun, Yu. V., Hryhorchuk, K. H., Hnidets, V. P., Popp, I. T., & Radkovets, N. Ya. (2012). Bezkysnevi podii okeanu Tetis. Karpato-Chornomorskyi sehment. Kyiv: Naukova dumka. [in Ukrainian]

Received: January 12, 2026
Accepted: February 23, 2026
Published: April 2026

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THE LATE CRETACEOUS OF THE PIENINY KLIPPEN BELT AND MARMAROSH KLIPPEN ZONE OF THE UKRAINIAN CARPATHIANS: PALEOCEANOGRAPHY BY FORAMINIFERA

Home > Archive > No. 1–2 (193–194) 2024 > 81–94

Geology & Geochemistry of Combustible Minerals No. 1–2 (193–194) 2024, 81–94

https://doi.org/10.15407/ggcm2024.193-194.081

Ksenia NAVARIVSKA1, 2, Oleh HNYLKO1

1 Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: ohnilko@yahoo.com
2 Lviv National Ivan Franko University, Lviv, Ukraine, e-mail: navarivska@gmail.com

Abstract

In presented article, on the basis of foraminiferal analysis and using the sedimentological data, the stratigraphy of the Upper Cretaceous deposits of the Pieniny Klippen Belt and the Marmarosh Klippen Zone is summarized and clarified, and the features of paleoceanography, in particular the paleobathymetry of sedimentatary basins, were reconstructed. An analysis of the taxonomic composition and morphological features of foraminifera were carried out, as well as of the planktonic/benthic ratio was calculated, on the basis of which the paleoenvironment for foraminifera were reconstructed.

Three types of deep-sea foraminiferal assemblages were identified in the studied sediments based on a comparison of the foraminiferal assemblages with the Upper Cretaceous biofacies of the Western Mediterranian and adjacent areas. The assemblages (1) of agglutinated foraminifera belonging to the deep-water agglutinated foraminifera (DWAF) are indicating a bathyal–abyssal below the calcite compensation depth (CCD). These assemblages were found only in the Marmarosh Klippen Zone in low-thickness (25 m) Turonian–Santonian red argillites in the lower part of the Puchov Formation, as well as in the flysch deposits of the Jarmuta Formation. Small-sized foraminifera with a fine-grained wall texture, which belong to the genera Ammodiscus, Haplophragmoides, Labrospira, Pseudobolivina, Plectorecurvoides, Praecystammina, Uvigerinammina, Gerochammina suggesting pelagic sedimentation below CCD are common in the lower part of the Puchov Formation in the Marmarosh Klippen Zone. The assemblages (2) are characteristic for the basin slope with depths above the CCD, and represented by mixed agglutinated, calcareous benthic and planktonic foraminifera. They are characterized by the predominance of the benthic specimens, which make up 70-80% of foraminiferal remains. Assemblages (2) were also found in sediments of the Marmarosh Klippen Zone, such as the upper part of the Santonian and Campanian sediments of the Puchov Formation. They contain siliceous or calcareous-siliceous DWAF (mainly genera Kalamopsis, Caudammina, Karrerulina, Spiroplectammina, Tritaxia, Dorothia, Marssonella), calcareous benthic foraminifera (mainly genera Pleurostomella, Eponides, Globorotalites, Anomalina, Reussella). Planktonic foraminifera have mainly large keeled shells typical for deep sea areas and belong to the genera Globotruncana, Globotruncanita, and Abathomphalus. The assemblages (3) are plankton-dominated with admixture of the DWAF and calcareous benthic foraminifera. The assemblages are characteristic of marls accumulated at depths above the CCD on continental slopes in the bathyal conditions of the open ocean. They are common in the Upper Cretaceous of the Pieniny Klippen Belt, where were found in the tops of the Tyssalo Formation (Cenomanian), Puchov Formation (Turonian–Maastrichtian), and Jarmuta Formation (Maastrichtian). Planktonic foraminifera have mainly large keeled shells, high species and genera diversity and belong to the family Rotaliporidae (Cenomanian), families Globotruncanidae, Globotruncanellidae (Turonian–Maastrichtian). Benthic foraminifera belong mainly to genera Caudammina, Tritaxia, Dorothia, Marssonella Eponides, Reussella.

The Upper Cretaceous deposits of the Ukrainian segment of the Pieniny Klippen Belt correspond to the sediments of the Czorsztyn sequence of its Polish segment, and were accumulated in the Czorsztyn submerged ridge (probably on its slope) located in the Alpine Tethys Ocean. The Upper Cretaceous deposits of the Marmarosh Klippen Zone were accumulated on the foot (Turonian – Santonian) and slope (uppermost Santonian – Campanian) of the another uplift such as the edge of the ancient Tisza-Dacia microcontinent, of which the Marmarosh Crystalline Massif is a part. Maastrichnian clastic sediments of the Jarmuta Formation were formed in the orogenic environments.

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Keywords

Ukrainian Carpathians, Pieniny Klippen Belt, Marmarosh Klippen Zone, Late Cretaceous, foraminifera, paleoceanography

Referenses

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PLATE-TECTONIC GEODYNAMICS OF THE TISZA–DACIA TERRAIN, UKRAINIAN CARPATHIANS

Home > Archive > No. 3–4 (191–192) 2023 > 61–73

Geology & Geochemistry of Combustible Minerals No. 3–4 (191–192) 2023, 61–73

https://doi.org/10.15407/ggcm2023.191-192.061

Oleh HNYLKO

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: ohnilko@yahoo.com

Abstract

In the work, the knowledge about the geological structure and evolution of the Marmarosh Massif (part of the Dacia terrane or the larger Tisza–Dacia terrane) of the Ukrainian Carpathians is supplemented and summarized. The geodynamic conditions of the formation of the Marmarosh massif are reconstructed in the context of the general evolution of the folded border of the East European craton on the basis of the author’s geological observations and with taking into account previous data. Detailed geological mapping was carried out to identify some areas, the results of which are partially published on the State Geological Map of Ukraine. The Marmarosh massif of the Central Eastern Carpathians is represented by a crystalline basement, which includes pre-Hercynian and Hercynian metamorphosed complexes, and a late Paleozoic – Cenozoic cover of unmetamorphosed or weakly metamorphosed sediments. The Precambrian basement Bilyi Potik and Dilove formations are metamorphosed up to amphibolite (possibly to granulite?) facies. Vendian – Early Paleozoic volcanogenic-terrigenous and carbonate weakly metamorphosed Berlebash and Megura formations are correlated with the Tulghes Formation (Romania), that compared with the remains of an ancient accretionary prism and volcanic arc. This prism/arc could belong to the Avalonia microcontinent, which collided with Baltica in the Early Paleozoic. The collision caused the formation of the pre-Alpine Caledonian thrust structure of the Marmarosh massif basement. Paleozoic volcanogenic-sedimentary, carbonate, and terrigenous complexes (Kuzya Formation in Ukraine, and Rusaia, Repedea and Cimpoiasa formations in Romania) were accumulated in a rift basin, the closure of which caused the Hercynian tectogenesis. Late Paleozoic coal-bearing Kvasnyi Formation and red-colored Krasnyi Pleso Formation are belonged to epi-Hercynian molasse and to the cover of the Marmarosh crystalline massif.

Jurassic rifting and spreading led to the separation of the Dacia microcontinent and the formation of a (sub)oceanic basin between Dacia microcontinent and Eurasia. This basin is now marked by the Fore-Marmarosh suture zone. The dipping of the Dacia into the subduction zone, which was inclined to the west, could have caused the formation of the Marmarosh basement nappes and their thrust eastward towards the Fore-Marmarosh basin (future Carpathian flysch basin). An accretionary flysch prism grew in front of the Marmarsh nappes, a significant part of the prism sank under the Marmarosh nappes (=crystalline massif) where it could generate hydrocarbons, which allows us to support the assumption about the prospects of the under Marmarosh nappes flysch autochthon.

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Keywords

Ukrainian Carpathians, Tisza–Dacia terrain, Marmarosh Massif, basement nappes

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NON-ORE MINERALS OF VEINLET-IMPREGNATED MINERALIZATION IN THE DEPOSITS OF THE KROSNO ZONE OF THE UKRAINIAN CARPATHIANS (district of the new Beskydy railway tunnel)

Home > Archive > No. 1–2 (187–188) 2022 > 103–114

Geology & Geochemistry of Combustible Minerals No. 1–2 (187–188) 2022, 103–114.

https://doi.org/10.15407/ggcm2022.01-02.103

Ihor NAUMKO1, Halyna ZANKOVYCH1, Oksana KOКHAN1, Olexandеr VOVK2, Yaroslav KUZEMKO1, Bohdan SAКHNO1, Roman SERKIZ3

1 Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: igggk@mail.lviv.ua
2 Lesya Ukrainka Volyn National University, Lutsk, Ukraine, е-mail: geologygeochemistry@gmail.com
3 Ivan Franko National University of Lviv, Lviv, Ukraine, е-mail: rserkiz@gmail.com

Abstract

The construction of the new Beskydy railway tunnel, which revealed the indigenous deposits of the Krosno formation of the Ukrainian Carpathians, provided an opportunity to obtain new results from the study of another prospective oil and gas-bearing areas of the flysch formation within the Krosno structural-facies unit. There is a second tunnel in length in Ukraine and passes under the Verkhovyna watershed ridge of the Ukrainian Carpathians. Its section is represented by the rocks of the Krosno formation, namely the stratification of sandstones, argillites and silt stones. There are two fracture zones have been indentified here, in which developed veinle-impregnated mineralization of ore (sulfides) and non-ore (calcite and quartz type of the “Marmarosh diamonds”) minerals. Calcite and quartz formas monominerals veins and in paragenesis calcite-quartz type of the “Marmarosh diamonds” ‒ sulfides. Quartz occurs in the form of splice sand well-faceted crystals, transparent, in yellow, brown, black, green colour. Calcite of a milky, translucent colour in the form of veins, veinlets, impregnation, powder on quartz, druz. Contains significant impurities of magnesium, manganese and iron which means the presence of a rhodochrosite-magnesite-siderite component. Hydrocarbon fluids are present in all calcite and quartz crystals of the “Marmarosh diamonds” type. By chemical composition, it is methane with impurities of higher hydrocarbons (up to hexane). Sometimes the manifestations of the outflow of a black substance with the smell of oil from the cracks in the veinlet-impregnated mineralization are recorded studied rock complexes of the flysch formation of the Krosno zone of the Ukrainian Carpathians (construction area of the new branch of the Beskydy railway tunnel), which acquires an important genetic significance.

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Keywords

veinlet-impregnated mineralization, calcite, “Marmarosh diamonds”, new Beskydy railway tunnel, Krosno zone, Ukrainian Carpathians

Referenses

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Hnylko, O. (2010). Pro pivnichno-skhidnu hranytsiu Krosnenskoi tektonichnoi zony v Ukrainskykh Karpatakh. Heolohiia i heokhimiia horiuchykh kopalyn, 2(151), 44–57. [in Ukrainian]

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DEFORMATIONS IN THE THRUST ZONE BETWEEN THE ZELEMIANKA AND PARASHKA SKYBAS OF THE UKRAINIAN CARPATHIAN SKYBA NAPPE (HREBENIV QUARRY)

Home > Archive > No. 1–2 (187–188) 2022 > 48–57

Geology & Geochemistry of Combustible Minerals No. 1–2 (187–188) 2022, 48–57.

https://doi.org/10.15407/ggcm2022.01-02.048

Milena BOGDANOVA

Ivan Franko National University of Lviv, Ukraine, e-mail: milena_bogdanova@ukr.net

Abstract

In the article, based on own field observations, the deformation structures into the thrust zone of the Zelemianka Skyba (=thrust-sheet) onto the Parashka Skyba (the Ukrainian Carpathian Skyba Nappe) are described. They are exposed in the Hrebeniv quarry located in the Opir River basin (Lviv Region, Skole district). The tectonically disintegrated Stryi Formation (Upper-Cretaceous–Paleocene flysch) characterized by the rigid sandstone blocks (formed mainly as a result of boudinage) placed in a ductile clay matrix is represented in the Hrebeniv quarry. This formation is proposed to be classified as a “broken formation”, which is strongly tectonized, but retain their lithological and stratigraphic identity. It is a transitional element between the weakly deformed strata and tectonic mélange. Their characteristic features are: linearity of the distribution zone; significant monomictic composition and absence of exotic formations; the presence of an intensively tectonized matrix with clastolites (blocks) of less tectonized rocks of the same lithostratum (formation, series); the presence of newly formed hydrothermal minerals in clastolite cracks; the upper and lower contacts limiting the broken formation have a tectonic nature. An intensely tectonized matrix and a weakly tectonized rigid blocks belong to the same stratigraphic unit in a broken formation. The structural features suggest a brittle deformations in the studied rocks. Tectonic processes occurred in the completely lithified deposits. Thrust processes were accompanied by the formation of the duplexes, including antiformal stack duplexes, which are well expressed in the quarry. Duplexes are observed in different parts of the quarry, and the most representative ones are developed in its central section. Horses in the duplexes are characterized by a size of 1 to 3 meters here. They are generally subparallel, which is consistent with monoclinal bedding, however, they sometimes acquire an antiform appearance as a result of tectonic thrusting.

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Keywords

Ukrainian Carpathians, Skyba Nappe, broken formation, thrust zone, deformations, duplexes

Referenses

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AGE AND SEDIMENTARY ENVIRONMENTS OF THE PALEOCENE DEPOSITS IN THE CARPATHIAN SKYBA NAPPE BASED ON MICROPALEONTOLOGICAL AND SEDIMENTOLOGICAL DATA

Home > Archive > No. 1–2 (187–188) 2022 > 36–47

Geology & Geochemistry of Combustible Minerals No. 1–2 (187–188) 2022, 36–47.

https://doi.org/10.15407/ggcm2022.01-02.036

Oleh HNYLKO, Aida ANDREEVA-GRIGOROVICH, Svitlana HNYLKO

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: igggk@mail.lviv.ua

Abstract

The results of micropaleontological and sedimentological studies of the Paleocene sediments such as the Upper Member of the Stryi Formation and the Yamna Formation located in the Skyba Nappe in the Ukrainian Outer (Flysh) Carpathians are represented. Sedimentological features of the flysch successions (including the sedimentary succession along the Prut River in the city of Yaremche) proved that the Upper Member of the Stryi Formation is represented mainly by turbidites; the lower part of the Yamna Formation (variegated Yaremcha Horizon) is composed of red and green clay hemipelagites and turbidites, and the upper part of the Yamna Formation (Yamna sandstone) consists of deposits of high-density turbidite currents and grain flows.

The calcareous nannoplankton: NP1, NP2, NP3 and NP4 zones as well as the foraminifera: planktonic Globoconusa daubjergensis Zone (Danian Stage) and benthic Rzehakina epigona Subzone of Rzehakina fissistomata Zone, s. l. (the early Paleocene) are identified in the Upper Member of the Stryi Formation. The calcareous nannoplanktonic NP4, NP5, NP6 zones are distinguished in the Yaremcha Horizon and NP6, NP8, NP9 zones are identified in the Yamna sandstone. The agglutinated foraminifera including Rzehakina fissistomatа, Rz. epigona, Caudammina ovula, Hormosina velascoense, Glomospirella grzybowskii, Saccammina placenta, Paratrochamminoides irregularis are dominated in the Yamna Formation. The age of the Stryi Formation (Upper Member) is established as Danian–partly Zealandian, and the age of the Yamna Formation is Zealandian–Thanetian based on nannoplankton and foraminifera data.

Deep-water agglutinated foraminifera (DWAF) belonging to the genera Rhabdammina, Hyperammina, Dendrophrya, Ammodiscus, Glomospira, Hormosina, Reophax, Haplophragmoides, Recurvoides, Trochamminoides, Paratrochamminoides, Spiroplectammina, Karreriella are dominated in the background hemipelagic clay deposits and make up to 100% of the tests in the microfaunal associations, that suggests the lower bathyal-abyssal depths of the sedimentary paleobasin The channel deposits (Yamna sandstone) and interchannel sediments (Upper Member of the Stryi Formation) of the ancient deep-sea fan are identified in the Paleogene flysch.

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Keywords

Ukrainian Carpathians, Skyba Nappe, Paleocene, foraminifera, nannoplankton, sedimentation

Referenses

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Kaminski, M. A., & Gradstein, F. M. (2005). Atlas of Paleogenecosmopolitan deep-water agglutinated foraminifera. Grzybowski Foundation Special Publication, 10.

Kováč, M., Márton, E., Oszczypko, N., Vojtko, R., Hók, J., Králiková, S., Plašienka, D., Klučiar, T., Hudáčková, N., & Oszczypko-Clowes, M. (2017). Neogene palaeogeography and basin evolution of the Western Carpathians, Northern Pannonian domain and adjoining areas. Global and Planetary Change, 155, 133–154. https://doi.org/10.1016/j.gloplacha.2017.07.004

Kováč, M., Plašienka, D., Soták, J., Vojtko, R., Oszczypko, N., Less, G., Ćosović, V., Fügenschuh, B., & Králiková, S. (2016). Paleogene palaeogeography and basin evolution of the Western Carpathians, Northern Pannonian domain and adjoining areas. Global and Planetary Change, 140, 9–27. https://doi.org/10.1016/j.gloplacha. 2016.03.007

Maslakova, N. I. (1955). Stratigrafiya i fauna melkikh foraminifer paleogenovikh otlozhenii Vostochnikh Karpat [Stratigraphy and fauna of small foraminifers in the Paleogene deposits of the Eastern Carpathians]. Moskva: Gosgeolizdat. [in Russian]

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Reding, Kh. G., Kollinson, Dzh. D., Allen, F. A., Elliott, T., Shreiber, B. Sh., Dzhonson, G. D., Bolduin, K. T., Sellvud, B. U., Dzhenkins, X. K., Stou, D. A. V., Eduardz, M., & Mitchell, A. X. G. (1990). Obstanovki osadkonakopleniya i fatsii [Sedimentary environments and facies] (Kh. Reding, Ed.; B. V. Baranov, I. S. Barskov, L. N. Indolev, M. A. Levitan & I. O. Murdmaa, Trans.; Vol. 2). Moskva: Mir. [in Russian]

Schmid, S., Bernoulli, D., Fugenschuh, B., Matenco, L., Schefer, S., Schuster, R., Tischler, M., & Ustaszewski, K. (2008). The Alpine-Carpathian-Dinaric orogenic system: correlation and evolution of tectonic units. Swiss Journal of Geosciences, 101, 139–183. https://doi.org/10.1007/s00015-008-1247-3

Senkovskyi, Yu., Hryhorchuk, K., Hnidets, V., & Koltun, Yu. (2004). Heolohichna paleookeanohrafiia okeanu Tetis [Geological paleoceanography of the Tethys Ocean]. Kyiv: Naukova dumka. [in Ukrainian]

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BIOSTRATIGRAPHY OF PALEOCENE-EOCENE DEPOSITS OF THE UKRAINIAN CARPATHIANS BASED ON PLANKTONIC FORAMINIFERA

Home > Archive > No. 3–4 (185–186) 2021 > 56–64

Geology & Geochemistry of Combustible Minerals No. 3–4 (185–186) 2021, 56–64.

https://doi.org/10.15407/ggcm2021.03-04.056

Svitlana HNYLKO

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: igggk@mail.lviv.ua

Abstract

Paleogene deposits are the main reservoir of hydrocarbon resources in the Carpathians and creation of the modern stratigraphic scheme of these deposits is the basis for improving the efficiency of geological search works. The reliable stratification is a necessary precondition for the preparation of geological maps. Stratification of the Paleocene–Eocene sediments is provided by foraminifera, nannoplankton, dinocysts, radiolarians, sponge spicules, palynoflora. Planktonic foraminifera is the main stratigraphic group of the Paleogene fauna.

In the predominantly non-calcareous flysch of the Paleocene–Eocene of the Carpathians, mainly agglutinated benthic foraminifera of siliceous composition are developed. Planktonic foraminifera are distributed locally – in calcareous facies. The most complete sequence of Paleocene–Eocene planktonic foraminifera is represented in the Metova Formation (the Vezhany nappe of the Inner Carpathians).

The results of own researches of natural sections of sediments distributed within the Magursky, Monastyretsky and Vezhany nappes of the Ukrainian Carpathians together with the analysis of literature sources are used.

The article presents a generalized biozonal division of the Paleocene–Eocene of the Ukrainian Carpathians by planktonic foraminifera. On the basis of certain correlation levels, a comparison with the Geological Time Scale was made.

The Parvularugoglobigerina eugubina Zone (lowermost Danian), Globoconusa daubjergensis Zone (middle Danian), Praemurica inconstans Zone (upper Danian); Morozovella angulata Zone (lower Selandian); Globanomalina pseudomenardii Zone fnd Acarinina acarinata Zone (upper Selandian–Thanetian); Morozovella subbotinae Zone (lower Ypresian), Morozovella aragonensis Zone (upper Ypresian); Acarinina bullbrooki Zone (lower Lutetian), Acarinina rotundimarginata Zone (upper Lutetian); Hantkenina alabamensis Zone (Bartonian); Globigerinatheka tropicalis Zone (lower Priabonian) and Subbotina corpulenta Zone (upper Priabonian) based on planktonic foraminifera are characterized in studied deposits.

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Keywords

Ukrainian Carpathians, planktonic foraminifera, biostratigraphy, Paleocene–Eocene

Referenses

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Vyalov, O. S., Gavura, S. P., Danysh, V. V., Leshchukh, R. I., Ponomareva, L. D., Romaniv, A. M., Tsarnenko, P. N., & Tsizh, I. T. (1981). Istoriya geologicheskogo razvitiya Ukrainskikh Karpat. Kiev: Naukova dumka. [in Russian]

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TECTONIC-SEDIMENTARY EVOLUTION OF THE FRONTAL PART OF THE UKRAINIAN CARPATHIAN NAPPE STRUCTURE

Home > Archive > No. 1–2 (183–184) 2021 > 45–59

Geology & Geochemistry of Combustible Minerals No. 1–2 (183–184) 2021, 45–59.

https://doi.org/10.15407/ggcm2021.01-02.045

Oleh HNYLKO, Svitlana HNYLKO, Maria KULYANDA, Romana MARCHENKO

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, e-mail: igggk@mail.lviv.ua

Abstract

For the first time in the Ukrainian Carpathians, the depths and tectono-sedimentation processes in the north-eastern part of the Outer Carpathian Basin (Skyba and Boryslav-Pokuttya units) have been restored on the base of sedimentological and microfaunistic studies. It was established that in the Cretaceous-Eocene time, the deep-water (near Calcite Compensation Depth) turbidite and similar sedimentation (turbidites with Bouma textures, grainites, debris-flow deposits), which periodically alternated with (hemi)pelagic sedimentation (red, green and black shales) was dominant here. Sedimentation took place on the continental margin of the the Carpathian branch of the Tethys, where deep-water fans were formed. Cretaceous-Eocene background red and green shales are enriched in buried in situ benthic foraminifera which are similar in taxonomic composition and morphological features to the microfauna of the Carpathian-Alpine and Atlantic regions (deep-water agglutinated foraminifera), which indicate lower bathyal – abyssal depths of flysch sedimentation. Latest Eocene Globigerina Marl horizon contains the foraminiferal assemblage with plankton dominance, which indicates a general shallowing of the Outer Carpathian Basin (middle-upper bathyal conditions above a calcite compensation depth). Oligocene – lowermost Miocene Menilite-Krosno and Polyanytsia formations were accumulated in the Skyba and Boryslav-Pokuttya sub-basins. In the Miocene, shallow-water molasses were accumulated here. Probably, the tectonic uproot of flysch deposits from its substrate and their synsedymentary thrusting towards the platform caused a significant shallowing of the Skyba and Boryslav-Pokuttya sub-basins starting from the latest Eocene. These processes reflected the growth of the Carpathian frontal nappes at the final orogen formation stage.

Full Text

Keywords

Ukrainian Carpathians, Skyba and Boryslav-Pokuttya nappes, foraminifera, turbidites

Referenses

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Andreyeva-Grigorovich, A. S. (1999). Biostratigraphic correlations of the paleogene deposits of the Ukrainian Carpathians and Crimea-Bakhchisarai area using nannoplankton and dinocysts. Geologica Carpathica, 50, 10–12.

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LITHOLOGICAL-GEOCHEMICAL TYPES OF DEPOSITS OF CRETACEOUS-PALEOGENE FLYSCH OF THE UKRAINIAN CARPATHIANS AND CONDITIONS OF THEIR FORMAITION

Home > Archive > No. 4 (181) 2019 > 116-133

Geology & Geochemistry of Combustible Minerals No. 4 (181) 2019, 116-133.

https://doi.org/10.15407/ggcm2019.04.116

Ihor Popp, Petro Moroz, Mykhailo Shapovalov

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine,
e-mail: igggk@mail.lviv.ua

Abstract

The results of lithological, mineralogical and geochemical investigation of Cretaceous-Paleogene flysch deposits of the Ukrainian Carpathians are cited here. There are three main lithological-geochemical types of these deposits which differ in the composition of rock-forming ingredients of biogenic origin (SiO2 biog, CaCO3, Corg): grey limestone-clayey-terrigenous (type-I), non-carbonate or low-carbonate-clayey-terrigenous (type-II), and black carbonate-silica-terrigenous-clayey (type-III). The deposits of the first type are attributed to alkaline-oxic (oxic-calcitic), the second – to acid and low-alcaline oxic (oxic with redeposited glauconite), the third – to reducing (siderite, dolomite or ferrodolomite and low-reducing calcitic) and strong by reducing (primary-sulfidic or hydrogen sulfidic) mineralogical-geochemical facies. The forming of the Barremian-Albian (Shypot suite; Spas suite) and Oligocene (Menilite suite; Dusynska suite) organic-rich sediments in the Ukrainian Carpathians we associate with the phase of oceanic anoxic events OAE-1 and OAE-4 in the Carpathian segment of the Tethys, where anoxic reducing environments favoured to fossilization of huge amount of the dispersed organic matter. The structural-fabric features and composition of separate lithological types of silicites and diagenetic concretions of the Lower Cretaceous and Oligocene of the Ukrainian Carpathians show that their sedimentogenesis and diagenesis took place in conditions of strong oxygen deficit. The studied siliceous rocks can be considered as indicators of the anoxic events in the Carpathian segment of Tethys ocean. It is shown, that alcaline-reducting environments which was the most favourable for the diagenetic transformation of sedimentary organic matter in to petroleum hydrocarbons, prevailed in the organic-rich deposits of Oligocene age.

Full Text

Keywords

sedimentogenesis, diagenesis, silica, carbonate, sulfides, organic matter, mineralogical-geochemical facies, Cretaceous-Paleocene flysch, Ukrainian Carpathians.

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