Mineral resources of Chernivtsi region
In the ancient land of Bukovyna, hidden within the snow-covered embrace of the Carpathian Mountains, remarkable treasures of the unseen world are revealed — mineral resources that enrich and naturally shape this unique region. In this article, we will embark on a fascinating journey into the world of natural resources of the Chernivtsi region, exploring the wealth of its subsoil, which determines not only the economic development of the area but also influences the lives and well-being of its inhabitants.
Within the region, there are 158 mineral deposits, around 50 of which are currently being developed. The largest share in the structure of the region’s mineral resource base belongs to construction raw materials (80%), while 12% consists of groundwater resources, 5% of hydrocarbon resources, and the remaining 3% accounts for other mineral resources.
Oil
The Lopushnianske oil field is located in the Vyzhnytsia district of the Chernivtsi Oblast, between the villages of Lekechi, Lopushna, and Dolishnii Shepit. Spatially, the field is confined to the outer part of the Pre-Carpathian Foredeep. The Lopushnianska structure is an anticlinal fold disrupted by longitudinal faults and transverse strike-slip faults into separate blocks. Oil accumulations are concentrated within Jurassic, Cretaceous, and Paleogene deposits. The oil reserves of the field are estimated at 11.8 million tonnes, of which 3.1 million tonnes are recoverable, along with 1.9 billion m³ of natural gas dissolved in oil.
The Putyla, Fedkovychi, Dykhtynets, Rozhen, and Tarashany areas are considered promising for oil and gas exploration.
The Dykhtynets area is located on the border between the Ivano-Frankivsk Oblast (Verkhovyna district) and Chernivtsi Oblast (Vyzhnytsia district). The area of this site is 69 km². The Dykhtynets uplift is a large brachyanticline within the Bilche-Volytsia zone of the Pre-Carpathian Foredeep. The Dykhtynets structure is divided into separate blocks by transverse strike-slip faults. This area is situated within a promising oil-and-gas-bearing region with an estimated density of undiscovered hydrocarbon resources ranging from 30 to 50 thousand tonnes/km².
The Tarashany area is located within the Chernivtsi district of Chernivtsi Oblast. The Tarashany structure is an anticline slightly elongated in the northwestern direction. Cambrian deposits are considered prospective for oil and gas occurrence, with estimated prospective free gas resources of category C3 amounting to 1,100 million m³.
Gas
Natural gas within the region has been discovered at five fields: Chornohuzke, Slavytske, Krasnoilsk, and Sheremetivske.
The Chornohuzke field is located 2 km from the city of Vyzhnytsia. Tectonically, it lies within the southeastern part of the Bilche-Volytsia zone of the Pre-Carpathian Foredeep, in the Storozhynets block. By its structural type, the Chornohuzka structure is an anticline. The reservoirs of the Chornohuzke field are stratified, dome-shaped, and tectonically sealed. As of January 1, 2021, the balance reserves amounted to 33 million m³.
The Krasnoilsk field is located near the village of Krasnoilsk in the Chernivtsi district of Chernivtsi Oblast. Tectonically, the field is situated within the southwestern part of the Outer Zone of the Pre-Carpathian Foredeep, in front of the thrust front of the Inner Zone. As of January 1, 2021, the balance reserves amounted to 578 million m³.
Brown сoal
Brown coal deposits within the region are known near the village of Ispas. The thickness of the coal seams reaches 30 cm. Two brown coal seams have been identified within the village: the upper seam occurs at a depth of 23 m, while the lower seam lies at 31 m. Within the Flysch Zone of the Carpathians, coal deposits have also been discovered near the villages of Seliatyn and Serhii, as well as in the urban-type settlement of Putyla. The thickness of the seams ranges from 20 to 30 cm.
Bituminous shales
Bituminous shale deposits have been identified in the northeastern part of the Bukovynian Carpathians, in the upper reaches of the Cheremosh, Siret, Malyi Siret, and Siretel rivers. These deposits are associated with the Menilite Formation of Paleogene age, whose sedimentary sequence reaches a thickness of up to 1,500 m.
Gold
Placer gold occurrences in the region are associated with alluvial deposits in the valleys of the Dniester, Prut, Cheremosh, and Siret rivers and their tributaries. The distribution of gold in the placers is uneven, and only rarely does its concentration reach 1–2 g/m³. The thickness of the gold-bearing horizons generally does not exceed 10–20 cm. Gold grains typically range in size from 0.25 to 0.5 mm, occasionally exceeding 1 mm. Nuggets weighing up to 1 g are found rather rarely. In some occurrences, gold concentrations reach economically viable levels, confirming the potential for further exploration and prospecting for placer gold deposits in this region.
Building stone
Sandstones extracted in the Putyla, Vyzhnytsia, and Storozhynets districts can be used as building stone. These sandstones were formed during the Cretaceous period, and their thickness reaches 500–600 m.
Tripoli
Tripoli deposits have been explored within the territory of Chernivtsi Oblast. They are located in the extreme northeastern part of the region, in the Dniester River valley. However, the thickness of the productive layer is relatively small and rarely exceeds 3 m.
Marble
A deposit of marbleized limestones suitable for use as facing stone has been explored in the urban-type settlement of Krasnoilsk. Structurally, the deposit is confined to the Boryslav-Pokuttya nappe of the Pre-Carpathian Foredeep. It is composed of coarse- and fine-block conglomerate-breccias of Triassic–Jurassic marbleized limestones with admixtures of green metamorphic rocks of Upper Paleozoic age, which occur at the base of the Oligocene Polyanytsia Formation in the form of a lens-shaped body. The thickness of the productive layer is 25.4 m. As of 01.01.2020, reserves were estimated at 414 thousand m³ in category C1 and 35 thousand m³ in category C2.
Limestone
Limestone deposits are associated with Paleozoic, Mesozoic, and Neogene sediments. The main reserves are concentrated within the Zastavna, Kelmentsi, and Sokyriany districts. Total reserves in categories A+B+C1 are estimated at 160 million tonnes. Deposits of the Vymozke and Babynske fields are used for the production of construction lime, while the Novoselytske and Viknianske deposits are used as agrochemical raw materials. Limestones from the Voronovetske, Komarivske, Skytske, and other deposits are utilized as building stone.
The Novoselytske limestone deposit (Eastern and Western sections) is located 1 km west of the village of Novoselytsia in the Dnistrovskyi district of Chernivtsi Oblast. Structurally, the deposit lies on the southwestern margin of the Podillian Plateau. The mineral resource is represented by Lower Sarmatian reef limestones overlain by Neogene clays, loess-like Quaternary loams, and a soil-vegetation layer. The average thickness of the limestone strata is 33 m in the Western section and 19 m in the Eastern section. As of 01.01.2021, limestone reserves in categories B+C1 amounted to 2,672.1 thousand tonnes.
The Komarivske limestone deposit is located 1.5 km east of the village of Komariv in the Dnistrovskyi district of Chernivtsi Oblast. The mineral resource is represented by Lower Sarmatian limestones. The thickness of the productive layer ranges from 3 to 39 m, averaging 15 m. The productive strata are underlain by lithothamnium limestones and overlain by fractured recrystallized limestones, clays, loams, sands, and a soil-vegetation layer. The deposit is комплексний and is exploited for the production of rubble stone and dimension stone. Remaining reserves as of 01.01.2019 amounted to: “dimension stone” in categories A+B+C1 — 16,525 thousand m³, and “building stone” in categories B+C1 — 5,316 thousand m³.
Gypsum
Gypsum deposits within the region are associated with the so-called Skytsko-Mamalyhivskyi gypsum district. The thickness of gypsum layers varies from 10–15 m to 35–40 m. Gypsum is extracted from the Verenchanske, Mamalyhivske, Darabanivske, Skytske, Stalineshtske, and Chornopotitske deposits. Total reserves as of 01.01.2017 in categories A+B+C1 amounted to approximately 60 million tonnes.
Clay and loam
Clay and loam deposits are used for the production of bricks, roofing tiles, and ceramic products. These deposits are associated with Neogene and Quaternary sediments. The thickness of the deposits is considerable, although usually only the upper layers are exploited. The average thickness of the clay layers ranges from 0.5 to 2 m. Among the largest deposits are Storozhynetske, Chornohuzivske, Ispaske, Berehometske, Vashkivske, and Myhivske.
The Storozhynetske‑2 clay deposit is located on the northern outskirts of the city of Storozhynets in Chernivtsi Oblast. The deposit consists of two sections, No. 2 and No. 3. The geological section includes clays of the lower subformation of the Miocene Dashava Formation and Quaternary overburden rocks. The total thickness of the productive layer ranges from 5.5 to 37 m, with an average thickness of 12 m. As of 01.01.2020, the reserves of the Storozhynetske deposit were approved by the State Commission of Ukraine on Mineral Resources (SCMR) under Protocol No. 5017 dated 23.01.2020 in the amount of 964 thousand m³ (categories A+B+C1).
Sand
Sand extracted within the region is associated with Neogene and Anthropogene sediments. The average thickness of sand deposits is 3–5 m, while the maximum thickness does not exceed 15 m.
Gravel-pebble material
Deposits of gravel and pebble material are associated with the riverbeds of the Dniester and Prut rivers, as well as their tributaries, where they form spits, shoals, and islands. The thickness of these deposits usually ranges from 3 to 5 m. The gravel and pebble material consists of fragments of various rock types, including quartz sandstones, limestones, flints, argillites, and siltstones, mixed with sandy and clayey material. Among the deposits currently being developed are the Nepolokivske, Luzhanske, Vashkivetske, Vyzhnytske, Chornohuzke, Spaske, and Maidanske deposits, among others.
Groundwater
Within the region, chloride-sodium, bicarbonate-sodium-magnesium-calcium, hydrogen sulfide chloride-sodium, and bromine chloride-calcium groundwater types occur. For centralized water supply, 9 freshwater groundwater deposits are currently exploited in the region. The Chernivtsi deposit is associated with an aquifer in Holocene and Neopleistocene alluvial sediments. Groundwater reserves have been approved for seven water intake facilities located on both banks of the Prut River. On the left bank, these include Luzhany, Lenkivtsi‑1, Mahala, Rohizna, Ocheret, and Lenkivtsi I‑Novosillia; on the right bank – Bila; another intake facility is located on Berehovyi Island.
The aquifer of the Vashkivtsi deposit is associated with modern Quaternary sediments. The waters are fresh, of complex chemical composition, dominated by bicarbonate and calcium ions, with mineralization ranging from 0.2 to 0.7 g/L. The Vyzhnytsia deposit is located on the right bank of the Cheremosh River, west of the town of Vyzhnytsia. The aquifer is associated with modern Quaternary alluvial deposits. The waters are fresh, of complex chemical composition, dominated by bicarbonate and calcium ions, with mineralization ranging from 0.3 to 0.45 g/L.
The Novoselytsia deposit is located in the town of Novoselytsia. The aquifer is associated with Upper Quaternary alluvial deposits. The waters are sulfate-bicarbonate sodium-calcium type, with total mineralization of 1.7–1.9 g/L. The Novodnistrovsk deposit is situated on the southeastern outskirts of the city of Novodnistrovsk. The aquifers of the deposit are represented by an Upper Proterozoic aquifer complex and a Quaternary alluvial aquifer. The exploited aquifer complex belongs to the Upper Proterozoic deposits. The waters are confined, fresh, bicarbonate-calcium type, with mineralization of 0.4–0.6 g/L.
The Sokyriany deposit is located within the city of Sokyriany. The aquifer is associated with Lower Sarmatian deposits. The waters are fresh and slightly mineralized, with mineralization ranging from 0.9 to 1.7 g/L, of bicarbonate-calcium composition.
The Kelmentsi deposit is located in the urban-type settlement of Kelmentsi. The waters are of bicarbonate-sulfate calcium-sodium composition, with total mineralization up to 0.87 g/L. The Kitsman deposit is located north of the urban-type settlement of Luzhany. The aquifer is associated with Upper Neopleistocene gravel-pebble deposits. The waters are unconfined, bicarbonate-calcium type, with mineralization of 0.4–0.6 g/L.
The Storozhynets deposit is located within the city of Storozhynets. The aquifer is associated with Upper Quaternary gravel-pebble deposits. The waters are fresh, sulfate-bicarbonate-calcium type, with mineralization of 0.4–0.6 g/L. The Vadul-Siret deposit is located near the village of Kamiana. The aquifer is associated with Upper Neopleistocene alluvial deposits. The waters are predominantly bicarbonate-calcium type, and less commonly sulfate-bicarbonate magnesium-calcium type.
Mineral waters
Thirty mineral water deposits are currently exploited within the region.
The Malyneshne deposit is located in the Malyneshnyi tract of Vyzhnytsia District. The mineral waters are associated with Neogene Menilite Formation deposits. The waters are bicarbonate sodium-calcium type, with mineralization of 0.6–0.7 g/L. The content of organic substances ranges from 10 to 12 mg/L. The water belongs to the medicinal table-water type known as “Naftusia”. The Ust-Putyla deposit is located south of the village of Ust-Putyla. The aquifer is associated with Paleogene Maniava Formation deposits. The waters are fresh, neutral, bicarbonate-chloride calcium-sodium type, with mineralization of 0.25–0.5 g/L. The water is used as a natural table water under the trade name “Karpatska Dzherelna”.
The Porkulyn deposit is situated on the eastern outskirts of the village of Porkulyn. The aquifer is confined to Paleogene Krosno deposits. The waters are sulfate-bicarbonate sodium-magnesium-calcium type, with mineralization of 0.4–0.8 g/L. The water is recommended for industrial bottling under the name “Rosa Karpat”. The Budenetske‑I deposit is located in the village of Budenets. The water is bicarbonate-sodium type, with mineralization of 0.7–0.9 g/L. It is recommended for industrial bottling under the name “Budenetska”. The Budenetske deposit (well No. 3 MW) is located on the western outskirts of the village of Budenets. The waters are table bicarbonate-sodium type, with mineralization of 0.7–1.3 g/L. The “Bukovynska” table water bottling plant is based on the use of water from this deposit.
The Dolynske deposit is located on the outskirts of the village of Tovtry. The aquifer is associated with deposits of the Opillia Horizon of the Lower Neogene. The waters are slightly saline, bicarbonate-sulfate magnesium-calcium type, with mineralization of 1.9–2.1 g/L. The water is recommended for industrial bottling under the name “Dolina”. The Mamornytske deposit is located on the outskirts of the village of Radhospivka. The aquifer is associated with deposits of the Vovchynets strata of the Lower Sarmatian. The water is bicarbonate calcium-magnesium-sodium and calcium-sodium-magnesium type, with mineralization of 0.8–1.2 g/L. It is recommended for industrial bottling under the name “Mamornytska”. The Shylivtsi deposit is located on the outskirts of the village of Shylivtsi. The aquifer is associated with Neogene deposits. The spring water is clean, transparent, bicarbonate-calcium type, with mineralization of 0.4–0.7 g/L. The water is recommended for industrial bottling under the name “Shylivchanka”.
The Kytroske deposit is located within the Kytrosy tract, west of the village of Oselivka. The aquifer is associated with deposits of the Albian Stage. The water is clear, odorless, cold, and has a slightly saline taste. It is bicarbonate-sulfate magnesium-sodium-calcium type, with mineralization of 1.0–1.4 g/L and slightly alkaline properties. The water is recommended for industrial bottling under the name “Kytroska”. The Zelenetske deposit is located in the village of Zelena. The aquifer is confined, with a pressure head of 16 m. The waters are sulfate-bicarbonate sodium type, with mineralization of 1.0–1.1 g/L. The water is recommended for industrial bottling under the name “Zelenchanka”. The Myhivchanske deposit is situated on the outskirts of the village of Myhove. The exploited aquifer belongs to the Lower Sarmatian deposits. The waters are unconfined. According to composition, they are bicarbonate magnesium-calcium and sodium-magnesium-calcium type, with mineralization ranging from 0.2 to 0.8 g/L. The water is recommended for industrial bottling.
The Brusnytske deposit is located in the village of Brusnytsia. Two types of mineral waters occur at the deposit. Sulfide waters of the Cenomanian Stage of the Upper Cretaceous may be used for external therapeutic applications. Low-mineralized bicarbonate-chloride sodium waters without specific components occur in the Kosiv deposits of the Neogene. The Chernivtsi deposit is situated in the eastern part of the city of Chernivtsi. The aquifer is associated with fine-grained sands of the Upper Badenian substage. The waters are low-mineralized, with mineralization ranging from 1.3 to 1.7 g/L. According to composition, they are bicarbonate-calcium waters without specific components. They are classified as medicinal table waters under the name “Chernivchanka”.
The Khreshchatynske deposit is located near the monastery in the village of Khreshchatyk. The deposit represents a stratified spring outlet, with springs located approximately 50 m apart from each other. Water from these springs is used for the water supply of the village of Khreshchatyk, the monastery, and for bottling table water. The water has low mineralization of 0.5–0.8 g/L. It is recommended for industrial bottling under the name “Khreshchatyk”. The Kelmenetske deposit is located in the urban-type settlement of Kelmentsi. The aquifer is associated with Upper Cretaceous deposits. The water is bicarbonate-sulfate chloride calcium-sodium type, with mineralization ranging from 1.2 to 2.2 g/L. It is classified as a medicinal table water under the name “Kelmenetska”.
The Novoselytske deposit is located on the western outskirts of the town of Novoselytsia. The aquifer is confined to Quaternary alluvial deposits. The waters are unconfined, bicarbonate-sulfate calcium type, with mineralization of 0.7–1.2 g/L. The water is recommended for industrial bottling under the name “Novoselytska”. The Valia-Kuzmynske deposit is located on the eastern outskirts of the village of Valia Kuzmyn. The aquifer is associated with Upper Badenian deposits. The waters are pressurized, bicarbonate-sodium type, with mineralization of 1.3–1.7 g/L. These waters are classified as medicinal table waters under the name “Valia Kuzmynska” and are recommended for the treatment of chronic gastritis. The Babynske deposit is located in the village of Babyn. The aquifer complex is associated with Lower–Middle Badenian deposits. The water is fresh, bicarbonate-sulfate calcium type, with mineralization of 0.7–1.1 g/L.
The Vyzhenske deposit is located on the outskirts of the village of Velyka Vyzhenka. The aquifer is associated with the Menilite Formation of the Paleogene. The waters are bicarbonate type, with mineralization of 0.5 g/L. These waters are classified as medicinal table waters and are recommended for industrial bottling under the name “Diana”. The Drachynetske deposit is located on the outskirts of the village of Drachyntsi. The aquifer is confined to Lower Neogene Kosiv deposits. The waters are pressurized, sulfate-bicarbonate sodium-calcium type, with mineralization of 1.16 g/L. They are classified as table mineral waters and recommended for industrial bottling under the name “Drachynetska”. The Luzhanske deposit is located northeast of the Luzhany Experimental Plant. The aquifer is found in Upper Quaternary alluvial deposits. The waters are fresh, with mineralization of 0.5–0.6 g/L. They are classified as table mineral waters and recommended for industrial bottling under the name “Luzhanska”.
The Nepolokivske deposit is located northeast of the Nepolokivtsi railway station. The exploited aquifer lies in Middle Quaternary alluvial deposits. The waters are fresh, bicarbonate-calcium type, with total mineralization of 0.7 g/L. They are recommended for industrial bottling under the name “Nepolokivska”. The Bukovyna deposit of fresh and table groundwater is located on the territory of the “Rosy Bukovyny” plant on the outskirts of Chernivtsi. The water intake consists of two wells exploiting the Upper Pleistocene alluvial aquifer. The waters are chloride-sulfate-bicarbonate sodium-calcium type, with mineralization of 0.79 g/L (well 1) and 0.96 g/L (well 2). Water from well 2 is classified as table water and recommended for industrial bottling under the name “Bukovynka”.
The Ispas deposit is located in the western part of the village of Ispas. The aquifer is confined to Middle Pleistocene alluvial deposits of the fourth above-floodplain terrace of the Cheremosh River. The spring water is bicarbonate-calcium type, with mineralization of 0.6 g/L. The waters are classified as table mineral waters and are recommended for industrial bottling. The Cheremosh deposit is located southeast of the village of Dovhopillia. The aquifer is of Paleogene age. According to its chemical composition, the water is sulfate-bicarbonate magnesium-calcium type, with mineralization up to 1.0 g/L. The waters are classified as table mineral waters and are recommended for industrial bottling under the name “Cheremoshska”.
The Velykokuchurivske deposit is located on the eastern outskirts of the village of Velykyi Kuchuriv. The groundwater is chloride-bicarbonate sodium type, with total dissolved solids of 2.1–2.5 g/L. The waters can be used for industrial bottling as medicinal table water under the name “Velykokuchurivska”. The Biskivske deposit is located on the outskirts of the village of Ust-Putyla. The aquifer is associated with Lower Paleogene deposits of the Yamnenska Formation. The horizon is weakly confined. According to chemical composition, the groundwater is bicarbonate-calcium type.
The Chernivtsi region possesses a significant amount of mineral resources, which are essential for its development. It is important to take into account environmental considerations and the long-term impact on the environment when using these resources. The preservation of ecological balance and sustainable development should remain priorities for the region.