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The tectonic setting of Albania, influenced by the collision with the Adria microplate, is divided into two structural domains: an external compressional zone and an internal extensional one. Two main fault systems characterize the region-the longitudinal system (NW-SE to NNW-SSE), consisting of thrust and reverse faults, and the transversal system (NE-SW), comprising strike-slip faults. The Lushnje-Elbasan transverse fault, oriented NNE, is associated with the Dumrea diapiric dome and the Elbasan Quaternary grabe...

Crystalline limestones - marbles, are historically one of the most important raw materials exploited in the area of the Bohemian-Moravian Highlands (Vysocina region). Their use is connected with the first construction of masonry buildings since the Middle Ages. Local marbles were first used as raw material for lime burning, then as building stone, decorative stones or as individual elements in building constructions. The most famous locations where these marbles were used include the Cistercian monastery in -dar n...

The Alasehir Graben hosts a thick sedimentary sequence of terrestrial clastics deposited from the Early Miocene to the present. Oil shales occur with thin- to medium-bedded sandstones, siltstones, and shales in the upper part of Alasehir Formation. This study evaluates depositional settings and paleoenvironmental conditions via inorganic geochemistry of oil shales. X-Ray Diffractometer results show the presence of quartz, clay, mica, feldspar, calcite, chlorite, pyrite, and ilmenite. Al2O3 shows strong positive co...

The Sredogriv low-grade metamorphic rocks belongs to the Montana unit of the Western Balkan Zone in northwestern Bulgaria. The low-grade rocks mainly consist of metamorphosed greenschist facies clastic-marly-tuffaceous precursors and minor basic to acidic, presumably olistostromic magmatic rock bodies. Here, we present whole-rock geochemistry of metabasic dyke-like bodies in the Sredogriv metamorphic rocks. Field observations revealed that the dyke-like bodies are intruded into the Sredogriv sedimentary succession...

The spatial and temporal relationship between petroleum and ore deposits has attracted the attention of scientists since the 1960s, when a connection was determined between oil-gas formation processes and ore-forming processes, which led to the formation of Pb-Zn Mississippi-type deposits, Carlin-type gold deposits, and stratiform copper deposits. These studies concluded that there is a paragenetic relationship between petroleum fluids and ore mineralization. To date, studies concerning the relationship between se...

The aim of this study is to conduct an in-depth analysis of data on the genesis of pegmatite deposits of the Kalba-Narym rare metal belt, features of rare metal mineralization. The research methodology includes the analysis of existing information on the study of geology and structural-tectonic conditions of the formation of rare metal deposits within the central part of the Kalba-Narym batholith. Field studies, sampling (more than 40 samples), and study of the mineralogical composition of pegmatites and host rock...

Miocene deposits are widespread in the Carpathian Foredeep in Poland (the northernmost part of Central Paratethys). The Poreba Zegoty XXV/25 borehole is located about 25 km on the west from Krak-w in the western part of the Carpathian Foredeep. The profile of Miocene deposits in this borehole includes the Klodnica and Skawina Formations. The Skawina Formation sediments are represented by grey and ash-gray claystones slightly brecciated in places. Micropalaeontological studies were conducted on the Skawina Formatio...

Investing in ensuring the quality and safety of movement on highways is not a one-time process. Institutions charged with ensuring quality crossing surfaces must constantly monitor and repair the highway network so that it remains in the best possible condition. Because the funds available to maintain the highway network are limited, it is essential that decisions taken to maintain and rehabilitate the highway network are spent justifying each intervention. Layer management systems at the network and project level...

The article considers the systematic errors of estimation of reserves and average contents of useful component in exploration of alluvial deposits of nesting, tape, etc. structures. The article identifies and evaluates the main components of systematic errors in the assessment of mineral content, useful and harmful components in alluvial deposits based on theoretical, experimental and generalized published works: insufficient density of the exploration network; error due to unrepresentative sample size. These erro...

This study examines the geomorphological and structural factors influencing the formation of coastal dunes along the Strandzha coastline of Bulgaria. Through the integration of GIS-based analyses, morphometric data, and geological profiles, the primary morphostructural units shaping coastal dynamics have been identified. These geological, morphostructural, and geomorphological conditions have provided the necessary prerequisites for dune formation. The research identifies a total of 17 dune systems along the Stran...

Hydrothermal processes, particularly hydrothermal eruptions, play a key role in forming epithermal gold-silver deposits. Such deposits, first described by White [1] and Lloyd [2], are found in both active and ancient hydrothermal systems [3]. These processes are linked to geothermal systems, volcanic activity, and fluid circulation, but their exact mechanisms and influence on metal concentration remain debated. This study examines the role of hydrothermal eruptions and key factors (temperature, boiling, chemical c...