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Hydrogen sulphide (H2S) migration in groundwater of the Zechstein strata in the Legnica-Głogów Copper Basin and its vicinity, SW Poland 波兰西南部Legnica-Głogów铜盆地及其邻近地区Zechstein地层地下水中硫化氢(H2S)的迁移
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1709
Robert Duda, Elżbieta Bilkiewicz, Roman Becker
{"title":"Hydrogen sulphide (H2S) migration in groundwater of the Zechstein strata in the Legnica-Głogów Copper Basin and its vicinity, SW Poland","authors":"Robert Duda, Elżbieta Bilkiewicz, Roman Becker","doi":"10.7306/gq.1709","DOIUrl":"https://doi.org/10.7306/gq.1709","url":null,"abstract":"<p> </p><p> </p><p> </p><p>Hydrogen sulphide (H<sub>2</sub>S) occurs in groundwater in various lithostratigraphic units of the Zechstein Basin in the Legnica-Głogów Copper Basin (SW Poland). This region is located in the Fore-Sudetic Monocline within which, several tens of kilometres NE of the study area, at greater depths, natural gas fields with hydrogen sulphide (H<sub>2</sub>S) occur. The Main Dolomite (Ca2), in which H2S-containing natural gas has accumulated, is younger than the Zechstein Limestone (Ca1), which is actively mined. The Ca2 and Ca1 formations are separated by a thick anhydrite succession including a wedge-shaped salt body. Hydrochemical analyses of 18 groundwater samples taken from different horizons within the Zechstein strata showed spatial variability ofH<sub>2</sub>S and chloride concentrations. A conceptual model of groundwater flow with dissolved H2S in the Zechstein formations was developed. H<sub>2</sub>S migration is associated with groundwater flow between the Ca2 and Ca1 aquifers through fissures in the anhydrite strata that separate them. Hydraulic contact through fissures in the anhydrite layers is the result of long-term exploitation of the underground copper deposit. Groundwater flow between the layers is influenced by a large change in the piezometric pressure of the groundwater in the depression cone caused by mining drainage.</p>","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"8 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The importance of transboundary aquifer management between Poland and Ukraine for the protection of common water 波兰和乌克兰之间跨界含水层管理对保护共同水资源的重要性
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1703
Tatiana Solovey, Rafał Janica, Vasyl Harasymchuk, Małgorzata Przychodzka, Halyna Medvid, Liubov Yanush
{"title":"The importance of transboundary aquifer management between Poland and Ukraine for the protection of common water","authors":"Tatiana Solovey, Rafał Janica, Vasyl Harasymchuk, Małgorzata Przychodzka, Halyna Medvid, Liubov Yanush","doi":"10.7306/gq.1703","DOIUrl":"https://doi.org/10.7306/gq.1703","url":null,"abstract":"<p>Transboundary hydrogeological units between Poland and Ukraine within the Bug and San River basins are identified, based on harmonized geological and hydrogeological data used for development of a numerical simulation of groundwater flows across the state border. This numerical model shows that the cross-border exchange of groundwater in aquifers takes place in a limited area and the flow pattern can be disturbed by the groundwater exploitation. Abstraction at current levels slightly increases the transboundary groundwater flow from Poland to Ukraine and minimally reduces the flow in the opposite direction, though not reversing the direction of water flow at the border. The simulated drawdowns do not have a transboundary range, but negative effects on surface water resources are noticeable. Estimates show that groundwater runoff to rivers decreased and infiltration losses through the riverbed increased. The quantitative status of the transboundary aquifers has not deteriorated significantly under the current exploitation but in the light of ambitious maximum allowable values for water abstraction, and in the absence of joint resource management, this problem will arise in the near future. Joint management should focus on a broader legal consensus, improvement of institutional relations, and integration of monitoring and groundwater status assessment systems.</p>","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"48 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Record of Late Neogene seismites in turbidite deposits of the Tafna Basin (NW Algeria) 阿尔及利亚西北部塔夫纳盆地浊积岩中晚新近世震积岩记录
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1696
Mostapha Benzina, Małgorzata Pisarska-Jamroży, Hakim Hebib
{"title":"Record of Late Neogene seismites in turbidite deposits of the Tafna Basin (NW Algeria)","authors":"Mostapha Benzina, Małgorzata Pisarska-Jamroży, Hakim Hebib","doi":"10.7306/gq.1696","DOIUrl":"https://doi.org/10.7306/gq.1696","url":null,"abstract":"The wide variety of soft-sediment deformation structures (SSDS) developed within deposits of the same age may hinder the interpretation of their origin. Some types of SSDS may appear similar though have different trigger mechanisms, while others may result from a specific mechanism. Furthermore, the development of particular SSDS may be influenced by several synchronous or semi-synchronous factors. This study deals with the recognition of SSDS trigger mechanisms with respect to lithological and deformational features of the deposits concerned. Turbidite deposits of late Neogene age in the Hadjret El Gat area (Tafna Basin) contain different types of SSDS associated with (1) slope processes (e.g., slump folds) and induced overburden pressure, coupled with broken beds and overloading structures, and (2) liquefaction and fluidisation phenomena, leading to the development of load structures, ball-and-pillow structures, water-escape structures and syndepositional faults. These two mechanisms of SSDS formation in the study area are thought to result from seismically-induced triggers. Recognition of a vertically-repeated, sandwich-like arrangement of deformed and undeformed layers along with the SSDS features (\"trapped\" within beds) suggests that these internally-deformed beds are seismites, the first recognized in the Tafna Basin of NW Algeria. Large earthquakes may trigger seismic waves energetic enough to deform strata and induce the development of SSDS. This hypothesis is supported here by tectonic evidence, given deposition of the Tafna Basin strata in the convergence zone between Africa and Eurasia, active since the late Neogene.<br /><br />","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Does the multi-proxy Eemian record from the Słup site (central Poland) indicate a more humid climate at the beginning of the hornbeam phase? 来自Słup站点(波兰中部)的多代理Eemian记录是否表明在角束期开始时气候更加潮湿?
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1694
Kamil Kultys, Dorota Brzozowicz, Danuta Drzymulska, Marcin Szymanek, Joanna Mirosław-Grabowska, Irena Agnieszka Pidek, Marcin Żarski
{"title":"Does the multi-proxy Eemian record from the Słup site (central Poland) indicate a more humid climate at the beginning of the hornbeam phase?","authors":"Kamil Kultys, Dorota Brzozowicz, Danuta Drzymulska, Marcin Szymanek, Joanna Mirosław-Grabowska, Irena Agnieszka Pidek, Marcin Żarski","doi":"10.7306/gq.1694","DOIUrl":"https://doi.org/10.7306/gq.1694","url":null,"abstract":"<p><sup> A new site of Eemian organogenic deposits in S3up (central Poland) has revealed an intermittent record of several phases within this interglacial. Pollen based studies of the core S3-19, drilled at the littoral zone of the palaeolake, indicated the absence of the E2, E3, E6 and an incomplete record of the E4 and E5 zones of the typical pollen succession. Results of other proxies (plant macrofossils, Cladocera, molluscs, NPPs, isotopes) supported the conclusions derived from the pollen diagram regarding the high humidity and lake water level during the E4 (Corylus-Quercus-Tilia) phase and at the beginning of the E5 (Carpinus-Corylus-Alnus) phase, when the fossil lake was most extensive. Thus, the lack of a record of the E3 and E4 RPAZs was associated with water level lowering and a less humid climate. The results stand in agreement with several other Eemian records from central Poland. <br /><br /></sup></p>","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"8 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mineralogy and geochemistry of Cu-Ni±Co±Ag±Bi polymetallic ores from the Hintermühlergang vein in the Chełmiec deposit, Sudetes Mountains, Poland 波兰苏台德斯山脉Chełmiec矿床hinterm<s:1> hlergang脉Cu-Ni±Co±Ag±Bi多金属矿石的矿物学与地球化学
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1708
Kacper Muszyński, Jaroslav Pršek, Sławomir Mederski, Aneta Drzymała
{"title":"Mineralogy and geochemistry of Cu-Ni±Co±Ag±Bi polymetallic ores from the Hintermühlergang vein in the Chełmiec deposit, Sudetes Mountains, Poland","authors":"Kacper Muszyński, Jaroslav Pršek, Sławomir Mederski, Aneta Drzymała","doi":"10.7306/gq.1708","DOIUrl":"https://doi.org/10.7306/gq.1708","url":null,"abstract":"Chełmiec is a hydrothermal vein-type carbonate-sulphide deposit in the Kaczawa Mountains, where polymetallic Cu-Ni±Co±Ag±Bi mineralization occurs. Samples, collected from an old dump of the Hintermühlergang vein, were studied by reflected light microscopy and electron microprobe. Two mineral parageneses, Ni-Co±Bi and Cu-Zn-Pb±Sb±Ag, associated with two stages of precipitation, were discovered in samples from the Chełmiec deposit. The first stage is associated with quartz, and is represented by pyrite, arsenopyrite, gersdorffite, cobaltite, bismuth minerals (native Bi, bismuthinite, and matildite), pyrrhotite, marcasite and chalcopyrite. The second stage associated with siderite and quartz is represented by sulphides (sphalerite, chalcopyrite, galena, pyrite), tetrahedrite group minerals [tetrahedrite-(Fe), tetrahedrite-(Zn), tennantite-(Zn), and argentotetrahedrite-(Fe)], gersdorffite and bournonite. Two generations of sulpharsenides were discovered in the samples studied. The first is represented by massive gersdorffite-cobaltite aggregates, the second generation occurs as tiny zoned gersdorffite crystals. Sulpharsenides are characterized locally by presence of high amounts of As (up to 1.55 <em>apfu</em>). Silver in the Chełmiec ores is hosted mainly in tetrahedrite group minerals [from 0.07 to 2.07 <em>apfu</em> in tetrahedrite – (Zn) and -(Fe), and from 4.37 to 4.90 <em>apfu</em> in argentotetrahedrite-(Fe)], less in matildite. In the Sudetes, the presence of massive sulpharsenides is rare, whereas freibergite is much more common.<br /><br />","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"4 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extent of the Odranian Glaciation in the Silesian-Kraków Upland Silesian-Kraków高地奥德良冰川作用范围
IF 1 4区 地球科学
Geological Quarterly Pub Date : 2023-11-27 DOI: 10.7306/gq.1700
Małgorzata Nita, Jerzy Nita, Viacheslav Andreychouk, Urszula Myga-Piątek
{"title":"Extent of the Odranian Glaciation in the Silesian-Kraków Upland","authors":"Małgorzata Nita, Jerzy Nita, Viacheslav Andreychouk, Urszula Myga-Piątek","doi":"10.7306/gq.1700","DOIUrl":"https://doi.org/10.7306/gq.1700","url":null,"abstract":"<span lang=\"EN\">The scarcity of Scandinavian rock fragments in glaciogenic deposits and lack of well-preserved glacial accumulation forms make it difficult to determine the maximum extent of the Odranian ice sheet in the area of the Częstochowa Upland, the Woźniki-Wieluń Upland and the Silesian Upland. While the glaciogenic deposits only contain a small admixture of Scandinavian rocks, they have been enriched with local flints and gravels that are undoubtedly related to glacial transport. The distribution of flint debris suggests that within these areas, the Odranian ice sheet reached farther south than previously assumed. This question has been analysed again on the basis of archival materials, new publications and the results of field research (studies of the distribution of flints, the Połomia gravels, siderite clasts and roches moutonnées. The use of methods based on 3D visualizations via digital terrain models (DTMs) has proven very useful. Moreover, the use of computer methods (GIS) in conjunction with field surveys made it possible to delineate the Odranian Glaciation boundary more precisely in the study area. The study indicated the important role of local material for inferring the maximum extent of Pleistocene glaciations. This is particularly important in areas where typical forms of glacial accumulation have not been preserved.</span>","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"25 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Element transfer at the soil-plant interface and accumulation strategies of vegetation overgrowing mining waste dumps in the Upper Silesia area (Poland) 上西里西亚地区(波兰)采矿废料堆积场植被土壤-植物界面元素迁移及积累策略
4区 地球科学
Geological Quarterly Pub Date : 2023-11-13 DOI: 10.7306/gq.1710
Łukasz KRUSZEWSKI, Monika KISIEL, Marta WOJEWÓDKA-PRZYBYŁ, Jacek STIENSS
{"title":"Element transfer at the soil-plant interface and accumulation strategies of vegetation overgrowing mining waste dumps in the Upper Silesia area (Poland)","authors":"Łukasz KRUSZEWSKI, Monika KISIEL, Marta WOJEWÓDKA-PRZYBYŁ, Jacek STIENSS","doi":"10.7306/gq.1710","DOIUrl":"https://doi.org/10.7306/gq.1710","url":null,"abstract":"We describe new data constraining patterns of interaction of soils and vegetation in post-coal-mining and post-smelting waste heaps of Upper Silesia. Mosses show the highest levels of many elements. We use 3 standard bioconcentration indices to show directions of transfer of both trace and major elements (53 in soils, 37 in plants) in particular plant organs. Solanum nigrum around organic- and S-rich fumaroles of the “Ruda” heap (Zabrze) shows 36 indices with values ≥2 (31-element basis) suggesting the largest hyperaccumulation potential (HP), especially of Cd, Mo, Sr, Zn, Mn and Au; also Hg, U, Al, Ti, Fe, Cu, Au and few others. Verbascum (4 specimens) shows HP for Tl, Sb, Cd and Sr. It is the major scavenger of V, Cr, Co, Ni, Ga, As, Hg, P and Bi, and occasionally of B, Hg, Au and Te. Crepis mollis shows evident affinity for W and Au, and Solidago gigantea for Ag. Anomalies of W are also present in mosses (2 specimens) and a grass, and of Au in one moss, Tussilago farfara and Eupatorium cannabinum . Most elements are transferred to leaves, with the partial exception of Cd and Tl. Variable behaviour is found for Cd, Tl, Cu, Se, Sr, Mo; Cu, Zn, B and W.","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"7 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136283976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Late Devonian–Early Carboniferous foraminifera of the Upper Silesian Block (Kraków Region, Southern Poland) 上西里西亚地块晚泥盆世-早石炭世有孔虫(Kraków波兰南部地区)
4区 地球科学
Geological Quarterly Pub Date : 2023-10-25 DOI: 10.7306/gq.1706
Stanisław SZCZUREK
{"title":"Late Devonian–Early Carboniferous foraminifera of the Upper Silesian Block (Kraków Region, Southern Poland)","authors":"Stanisław SZCZUREK","doi":"10.7306/gq.1706","DOIUrl":"https://doi.org/10.7306/gq.1706","url":null,"abstract":"","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"78 5-6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135218578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geotectonic setting of Permian polymetallic deposits in the Polish Basin 波兰盆地二叠系多金属矿床的大地构造背景
4区 地球科学
Geological Quarterly Pub Date : 2023-10-19 DOI: 10.7306/gq.1704
Paweł H. KARNKOWSKI, Anna POSZYTEK, Katarzyna DELURA, Anna CZARNECKA-SKWAREK, Krzysztof CZURYŁOWICZ
{"title":"Geotectonic setting of Permian polymetallic deposits in the Polish Basin","authors":"Paweł H. KARNKOWSKI, Anna POSZYTEK, Katarzyna DELURA, Anna CZARNECKA-SKWAREK, Krzysztof CZURYŁOWICZ","doi":"10.7306/gq.1704","DOIUrl":"https://doi.org/10.7306/gq.1704","url":null,"abstract":"The Polish Basin is located between the Precambrian East-European Platform and the Cadomian Bohemian and Małopolska massifs. The basement of this Permian-Mesozoic basin comprises mainly Variscides and epi-Caledonian Paleozoic rocks. In the proximal (NE) part of the basin, the Mid-Polish Trough is distinguished. In the distal (SW) part, the thickness of the Permian-Mesozoic succession is much smaller than in the Polish Trough. Palaeorift zones were active from the Permian to the end of the Jurassic in the distal part of this basin. The Kupferschiefer mineral system indicates a palaeorift zone and smaller hot spots as sources of supply of metalliferous brines. The relatively small thickness of the Rotliegend sandstones and their good permeability and porosity properties created very favourable routes for the migration of metal-bearing brines. The entire Kupferschiefer polymetallic reservoir is regionally sealed by anhydrites and salts of the Werra cyclothem. This was inclined constantly from Permian times onwards to the north, favouring the migration of polymetallic brines from rift zones to geochemical reservoir traps. Mineral system analysis of the polymetallic Kupferschiefer deposits shows that the geotectonic setting of this zone relates only to the distal part of the Polish asymmetric rift basin.","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135730076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a non-perennial to ephemeral fluvial system in continental fault-bounded basin – an example from the early Permian Krajanów Formation of the Intra-Sudetic Basin (NE Bohemian Massif) 陆相断界盆地非多年生到短暂性河流体系的发育——以早二叠世Krajanów苏德海内盆地(东波希米亚地块)的形成为例
4区 地球科学
Geological Quarterly Pub Date : 2023-10-10 DOI: 10.7306/gq.1701
Aleksander KOWALSKI, Magdalena FURCA
{"title":"Development of a non-perennial to ephemeral fluvial system in continental fault-bounded basin – an example from the early Permian Krajanów Formation of the Intra-Sudetic Basin (NE Bohemian Massif)","authors":"Aleksander KOWALSKI, Magdalena FURCA","doi":"10.7306/gq.1701","DOIUrl":"https://doi.org/10.7306/gq.1701","url":null,"abstract":"Non-perennial to ephemeral fluvial systems dominated by seasonal discharge fluctuations and episodic rapid flood-flow events are typical of arid to semi-arid climatic conditions. Dryland fluvial systems have been described from many ancient and modern, predominantly tectonically-controlled sedimentary basins across the globe. This study provides detailed sedimentological analysis and palaeoenvironmental interpretation of the lowermost part of the early Permian (?Asselian) Krajanów Formation exposed within the continental, fault-bounded Intra-Sudetic Basin (ISB), located on the NE periphery of Bohemian Massif. High-resolution sedimentological logging and facies analysis indicate that the early Permian fluvial system in this area was dominated by ephemeral fluvial processes influenced strongly by a semi-arid to arid climate. Rapid (?catastrophic) flood events led to episodic sedimentation of vertically and laterally amalgamated fluvial channel infills, with abundant upper flow regime structures as well as poorly channelized, laterally extensive sheet-like bodies of sandstone. The overbank deposits are poorly preserved due to frequent lateral shifting of the channels. Soft-sediment deformation structures formed due to events of river bank collapse as well as debris flow facies point to high-energy, waning flows. It is concluded that deposition occurred on broad, terminal-type alluvial fans, probably in their proximal- to medial segments within a distributive fluvial system of the Permian Intra-Sudetic Basin. Petrographic composition and measured palaeocurrent directions show that the sediment was sourced from the neighbouring massifs – the Sowie Mts. Massif to the east, the Bardo Structure and a hypothetical Southern Massif to the south/south-east.","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136295579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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