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PL
W artykule przedstawiono wyniki badań poziomu stężenia radonu w wybranych budynkach mieszkalnych zlokalizowanych na terenie ziemi rybnickiej. Do pomiarów, prowadzonych w kilku kampaniach w latach 2005-2010 stosowano pasywną metodę pomiarów, z wykorzystaniem detektorów śladowych cząstek alfa. Wykonano 122 pomiary w piwnicach i na parterach w 61 budynkach. Czas ekspozycji detektorów wynosił od 3 do 6 miesięcy. Zakres mierzonych stężeń radonu wynosił od 10 do 390 Bq/m³ na parterach oraz od 28 do 740 Bq/m³ w piwnicach. Średnie arytmetyczne mierzonych wartości wynosiły odpowiednio: 74 Bq/m³ na parterach oraz 128 Bq/m³ w piwnicach i były wyższe od wartości średnich obliczonych dla całej Polski, jak i dla Górnośląskiego Zagłębia Węglowego (GZW).
EN
This paper presents the results of studies on the level of radon concentration in selected residential buildings located in the area of the Rybnik region. A passive measurement method, using alpha particle trace detectors, was applied for measurements carried out in several campaigns between 2005-2010. A total of 122 measurements were carried out in the basements and ground floors of 61 buildings. The exposure time of the detectors ranged from 3 to 6 months. The range of measured radon concentrations was from 10 to 390 Bq/m³ on the ground floors and from 28 to 740 Bq/m³ in the basements. The arithmetic means of the measured values were respectively: 74 Bq/m³ on the ground floors and 128 Bq/m³ in the basements and were higher than the average values calculated for Poland as a whole, as well as for the Upper Silesian Coal Basin (GZW).
EN
Based on the ranking list of the top 2% of the world's most cited scientists, pub¬lished by the PLOS Biology journal in 2022, the authors of the article analysed the place of Earth Sciences among other fields of science and the position of Polish geologists on the list, determined based on a composite index taking into account popularity of scientific publica¬tions, resulting from the number of their citations. The analysis results allow geologists to pres¬ent Earth Sciences against other fields of science and to show the names of geologists from Polish research centres who are among the most frequently cited scientists in the world.
EN
Emil Lucjan Habdank Dunikowski - a graduate of the Lviv (Lwów), Munich and Vienna Universities, belongs to the circle of the Polish most significant scientists who specialized in Earth sciences and pursued their careers in the Lviv of the Austrian era. Sociable, diligent, and curious about the world, he devoted his time to discovering the mysteries of geology, actively developing Polish research in Galicia. While performing his research-related tasks in various parts of the globe (for example in North Africa, North America, Europe, and Russian Primorsky Krai), he satisfied his passion for travelling, delivering accurately made descriptions of broadly defined nature. In biographical contexts, the Lvovian scientist is seldom mentioned. Despite his undisputable scientific achievements and extensive travel experiences, there has yet to be a comprehensive biographical and bibliographical study dedicated to him. This article outlines his scientific profile and presents some unknown facts from Emil Dunikowski’s private life and career, based on the documents obtained from the State Archives of Lviv Oblast in Lviv (Ukraine).
EN
The primary function of the river dike system is to safeguard lives and property from flood hazards. However, due to aging infrastructure and various geological or anthropogenic factors, certain vulnerable sections of the dike system can emerge as the water level in the river increases. Flood maps are one tool that presents vital information for authorities and residents in the flood risk mitigation. This study's primary goal is to provide a flood map under the dike break condition using the estimated fracture size parameters from a geo-radar survey and the MIKE FLOOD model. This approach addresses the observed research gap by utilizing a survey database instead of relying on empirical models which are capable to produce the conservative estimates of the dike breach outflow. A case study is conducted on the Hoang Long River dike system in Ninh Binh Province, Vietnam.
EN
Song Hong basin is a very large basin with complicated onshore to offshore geological structure. The basin comprises the pre-Tertiary basement and Kainozoi sequences. This study focused on the evolution of submarine channel in Miocene sequence. The study interval is the major reservoir of the basin characterized as submarine channel complex and lower to Middle Miocene carbonates with the porosity of 15–25%. The channel is highly eroded into the substrate with c. 7 km wide and 20 km long, trending northwest-southeast. They are ‘U’ to ‘V’ shape, sub-parallel to deep faults which reactivated in the Early and Mid-Late Miocene. The channel deposit is characterized by cut and fill architecture and can be seen as high amplitude, bi-directional downlap. The channels are likely to be controlled by the two inverted phases in Late Oligocene and Middle-Late Miocene. The tectonic events are not only controls the flow directions but also modified the shape of the channels. The occurrence of well-developed submarine channel give a great hydrocarbon potential for the Song Hong basin.
EN
The Song Hien Rift basin, located in northeast Vietnam, has been identified as an important region for gold deposits, including the Pac Lang deposit. Several methods like petrographic observations, elemental analyses, and geochemical elements and vertical zoning models of primary halo have been used to describe geological characteristic of this deposit. The investigation focused on examining the geological events that occurred both before and after the formation of the ore. The use of ICP-MS analysis and element concentration contrast enabled an effective assessment of the relative degrees of denudation that occurred at the Pac Lang deposit. The findings of this study were consistent with prior research on ore deposit geology, geochemical primary-halo, and examination of geochemical indicator zoning patterns for gold ore bodies. The study's application of singularity analysis for evaluating the degree of denudation provides important geological information that can aid in data interpretation. The results of the study can also have significant reference value in furthering our understanding of the post-ore deformation of deposits and in the investigation of unknown orebodies in northeast Vietnam. There indicate that, the research's findings suggest that the use of singularity analysis to evaluate the degree of denudation is a valuable tool for exploring potential gold deposits and enhancing our knowledge of gold deposit geology in northeast Vietnam. Overall, this study contributes to the existing body of knowledge on gold deposits in the Song Hien Rift basin and can serve as a useful reference for future research in the area.
EN
The generally east-west trending Salt Range, located in northern Pakistan, is a part of the foreland zone of the Himalayan Fold and Thrust Belt (HFTB). The 5,000–1,000 m thick Precambrian to Pleistocene sedimentary archives of the Salt Range provide an excellent opportunity for the reconstruction of sedimentation style, palaeoclimatic conditions, and tectonic history of the northwestern margin of the Indian Plate. The Precambrian evaporites of the Salt Range Formation are the oldest rocks in the area and represent the westward extension of the Precambrian evaporitic belt that includes the Hormuz Salt Basin (Iran) and Ara Salt (Arabian Plate). A highly weathered igneous body “Khewrite” occurs in the upper part of the formation and can be correlated with the volcanic record during the Ediacaran-Cambrian transition in the Arabian Plate. The clastic-dominated Lower Cambrian succession in the area is directly overlain by the Permian Tobra Formation and with a gentle angular unconformity. The poorly sorted conglomerates of the Tobra Formation indicate deposition during the Permo-Carboniferous glaciation and the irregular distribution of the Tobra and Dandot formations in the area supports their deposition during the syn-rifting phase of the Neo-Tethys opening. The overlying Upper Permian and Mesozoic strata indicate deposition on the northwestern passive margin of the Indian Plate facing the southern margin of the Neo-Tethys. This represents the drift sequence with multiple phases of passive margin rejuvenation during the Mesozoic. The drift sequence is unconformably overlain by the Paleocene Hangu Formation. Karst bauxites mark this contact and hint at exhumation and exposure in the distal part of the underthrusting plate margin. The Hangu Formation grades upward through the Lockhart Limestone into black shales of the Patala Formation supporting deepening and the possible establishment of a trench setting in the area. The presence of thick evaporites of the Bahadar Khel Salt and Jatta Gypsum in the western part of the area (Kohat Plateau) indicates a restricted lagoonal setting during the closure of the Neo-Tethys during the Eocene. The absence of the Oligocene strata hints at the uplift and exhumation of the area during the Himalayan Orogeny. The Neogene strata of the area consist of fluvial-continental detritus and represent molasse sedimentation. Thermal history modelling based on Apatite Fission Tract (AFT) data indicates three major cooling (uplift) episodes separated by two burial phases in the area. The first cooling event (ca. 520 Ma) coincides with the emplacement of the Mansehra Granite just north of the area (ca. 516 Ma) and supports exhumation correlatable with the Pan-African Orogeny. This was followed by the first burial phase (ca. 500–370 Ma) that supports Late Cambrian–Devonian sedimentation in the area. The second cooling event (ca. 300–280 Ma) coincides with the initial rifting and exhumation associated with the Neo-Tethys opening. Therefore, it appears that the Late Cambrian–Devonian strata were deposited in the Salt Range but were subsequently eroded during the exhumation induced by the Neo-Tethys opening during Permo-Carboniferous. This was followed by Neo-Tethyan passive margin deposition throughout the Mesozoic. An additional cooling episode is observable at around ca. 60 Ma and is supported by the presence of karst bauxites at the base of the Hangu Formation. Provenance analysis of the Paleocene strata suggests that detritus for the Hangu Formation was supplied from the south (Indian Plate). The overlying Patala Formation indicates the onset of sediment supply from the north and hence the uplift of the Himalayan Orogen. The overlying Kuldana Formation supports detritus supply only from the north verifying the Neo-Tethys closure by the end of Eocene. Thus the Paleogene strata represent syn-collisional deposition of the Neo-Tethys in the Salt Range. The second burial event (ca. 20–6 Ma) occurred during the Neogene in response to molasse sedimentation in the foreland of the uplifting Himalayan Orogen that was followed by the final cooling and uplift event (ca. 4 Ma) along the Salt Range Thrust. Thus the stratigraphic successions of the Salt Range provide key information regarding the reconstruction of the northwestern Neo-Tethyan margin of the Indian Plate which can help in the understanding of Neo-Tethyan tectonics in regional and global context.
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