Lithology and Mineral Resources最新文献

{"title":"Early Devonian (Emsian) Deposits in the Bolshaya Usa Section (Polar Urals): Lithology, Stratigraphy, and Isotopic Geochronology","authors":"A. N. Plotitsyn,&nbsp;A. V. Zhuravlev,&nbsp;I. D. Sobolev,&nbsp;O. V. Artyushkova,&nbsp;R. A. Khabibulina,&nbsp;E. V. Antropova,&nbsp;A. V. Kulikova,&nbsp;I. V. Vikentiev","doi":"10.1134/S002449022660016X","DOIUrl":"10.1134/S002449022660016X","url":null,"abstract":"<p>This article presents the results of a comprehensive lithological, biostratigraphic, and isotope geochronological study of the Emsian Bolshaya Usa River section on the western slope of the Polar Urals. The study aims to characterize the boundary between the Vuchvozh and Shervozh formations, and to clarify their stratigraphic range, to reconstruct the depositional settings, and to identify the sources of clastics for the formations studied. The detailed bed-by-bed description and analysis of the lithological and paleontological data enabled us to perform a lithological and stratigraphic subdivision of the section. The boundary between the Vuchvozh and Shervozh formations is marked by the appearance of a bed of fine-grained quartz sandstone and calcareous argillite. This siliciclastic unit has been proposed as a marker horizon. The deposition likely occurred in the lagoonal part of a carbonate platform in a back-reef setting. Biostratigraphic analysis of conodont, stromatoporoid, and tabulate associations from the Vuchvozh Formation indicates an Emsian age for the rocks, corresponding to the upper part of the Vyazovaya, Koyva, and the lower part of the Biya regional stages of the regional stratigraphic scheme of the western slope of the Urals (approximately corresponding to the <i>serotinus</i>–<i>patulus</i> conodont zones). U–Pb dating of detrital zircons from sandstones at the base of the Shervozh Formation revealed the predominance of Meso- and Paleoproterozoic ages (1–2 Ga), with a subordinate amount of Neoarchean-Paleoproterozoic and Neoproterozoic zircons. The distribution of detrital zircons indicates that the main sources of detrital material delivered to the passive Arct-Laurussia margin during the Emsian were the formations of the Sveconorwegian and Svecofennian domains of the Baltica, exposed as a result of the Caledonian orogeny. The dating results are consistent with existing paleogeographic models of the region.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 4","pages":"365 - 383"},"PeriodicalIF":0.7,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148365962","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}

{"title":"Some Features of the Lithogeochemistry of Surface Bottom Sediments in the Pechora River Delta","authors":"A. V. Maslov,&nbsp;D. P. Starodymova,&nbsp;N. A. Demidenko,&nbsp;A. M. Alabyan,&nbsp;E. E. Kuzmina,&nbsp;V. P. Shevchenko","doi":"10.1134/S0024490226600195","DOIUrl":"10.1134/S0024490226600195","url":null,"abstract":"<p>Some lithogeochemical features of surface bottom sediments (silty sands, silty pelites, and pelitic silts) in the Pechora River Delta are analyzed. It was found that their bulk chemical composition (calculated on the anhydrous basis) is similar to that of the Pechora River suspended matter. The previous assumption that the detrital material composing the surface bottom sediments are predominantly sourced from sedimentary and felsic igneous rocks of the Urals is confirmed. The preservation of a provenance signal from this distant provenance in the Pechora River Delta is probably associated with both the rather harsh climate in the drainage basin and the absence of any other clastic sources in the middle and lower reaches of the Pechora River. It is shown that the content of the overwhelming majority of trace elements in the studied samples is noticeably lower or comparable to that in the upper continental crust. Absolute concentrations of heavy metals in bottom sediments of the Pechora River and Bol’shaya Zemlya Tundra soils, sampled in different years using various methods, have a fairly high degree of convergence. The main carriers of both heavy metals and other trace elements in bottom sediments are feldspars, fine-grained/silty–clayey components, as well as iron oxides and hydroxides.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 4","pages":"333 - 344"},"PeriodicalIF":0.7,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148365918","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}

{"title":"Problematic Hydroidea of the Genus Fistulella in Rocks of the Saf’yanovo Massive Sulfide Copper–Zinc Deposit (Middle Urals)","authors":"E. I. Soroka,&nbsp;T. I. Stepanova,&nbsp;R. M. Ivanova,&nbsp;L. V. Leonova","doi":"10.1134/S0024490226600031","DOIUrl":"10.1134/S0024490226600031","url":null,"abstract":"<p>Problematic Hydroidea of the genus Fistulella were found in ore-bearing rocks of the Saf’yanovo massive sulfide copper–zinc deposit. The systematic position of this genus has not been determined. Fistulella, classified as problematic Hydroidea in (Shuysky, 1970), resemble the algae-type tubular organisms. They are reef builders and quite common in Paleozoic reefs of the northern Urals, where they form a type of biohermal limestones in association with algae, in particular, <i>Ikella vermicularis</i> (Shuysky, 1970). The ore-hosting sequence of the Saf’yanovo deposit includes the Silurian (Przhidolian) volcanic rocks. Attenuation of reef formation was noted at the Przhidolian stage in the northern Urals. Predominantly autotrophic communities of reef structures (small banks and bioherms) are replaced by heterotrophic communities (including problematic Hydroidea), characterizing the shoal conditions of the open sea. Findings of the remains of problematic organisms of the genus Fistulella at the Saf’yanov deposit are of great importance, because they suggest that the ore-hosting sequence in the deposit, along with volcanic rocks and sedimentary carbonaceous–siliceous rocks, also includes the remains of biohermal buildups and indicates a shallow sedimentation environment. The buildups were probably pre-ore structures, because the detected organism remains were replaced by carbonates of the magnesite–siderite series.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"325 - 331"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865610","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}

{"title":"Upper Riphean and Vendian Chemostratigraphy (S. Lato) of the Southern and Middle Urals","authors":"A. V. Maslov","doi":"10.1134/S0024490226600067","DOIUrl":"10.1134/S0024490226600067","url":null,"abstract":"<p>Modern techniques, approaches, and methods of chemostratigraphy (s. lato) are reviewed. Using clay rocks from Upper Riphean and Vendian (Neoproterozoic) sedimentary sequences of the Southern and Middle Urals (Karatau, Asha, Serebryanka, and Sylvitsa groups) as examples, the characteristics of changes in their bulk chemical composition and the possible relationship of these changes with subglobal events in the inner and outer shells of our planet are analyzed. The presented materials suggest that modern chemostrati-graphy (s. lato) represents a broader geological discipline than simply a section of stratigraphy that uses chemical element contents or stable isotope ratios and other elements in sedimentary rocks to subdivide and correlate sediments. Chemostratigraphy (s. lato) is a large-scale and multifaceted analysis of the chemical composition of sediments/sedimentary rocks, allowing the researcher to use numerical data to assess the main (paleogeodynamic, paleoclimatic, paleogeographic) patterns of their formation, as well as the contribution of various provenances to these processes.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"266 - 286"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865638","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}

{"title":"Mineralogical and Geochemical Peculiarities of Cupriferous Sandstones from the Bym Area of Upper Permian Sedimentary Rocks, Western Cis-Urals","authors":"N. R. Ayupova,&nbsp;E. V. Shepel,&nbsp;I. A. Blinov,&nbsp;S. A. Sadykov","doi":"10.1134/S0024490226600043","DOIUrl":"10.1134/S0024490226600043","url":null,"abstract":"<p>Cupriferous sandstones contain fragments of chloritized volcanic rocks, silicified volcanic glasses and carbonized plant relics, grains of feldspars (K-feldspar and plagioclase), quartz, clays, chlorite, calcite, and accessory epidote, zircon, apatite, barite, ilmenite, silver sulfide, ilmenite and chromite. The Cu-bearing minerals include chalcopyrite, bornite, nonstoichiometric minerals of the chalcocite-covellite series (djurleite, spionkopite, yarrowite, covellite), malachite and mottramite. Two pyrite varieties are identified: microcrystals replaced by Fe-oxyhydroxides and framboids replaced by copper sulfides. Cupriferous sandstones are characterized by varying contents of major oxides depending on the ratio of the amount of detrital material and carbonate cement in the rock. The marker trace elements of sandstones are Ba, Sr, and REE with high contents and Cr, Ni, Zn, As, Mo, Sb, Pb, U, Th, V, and Zr. The δ¹⁸O and δ¹³C values in calcite vary from +22.24 to +29.35‰ (SMOW) and from –5.34 to –18.0‰ (PDB), respectively. Based on the structural-textural and mineralogical-geochemical features, the studied sandstones can be classified as the coastal-marine deposits.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"309 - 324"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865639","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}

{"title":"Zonation of Pleistocene Sedimentation in the Atlantic Ocean","authors":"M. A. Levitan,&nbsp;L. G. Domaratskaya,&nbsp;A. V. Koltsova","doi":"10.1134/S0024490226600080","DOIUrl":"10.1134/S0024490226600080","url":null,"abstract":"<p>Based on the data from DSDP, ODP, and IODP Legs, several schematic maps of the CaCO₃, Al₂O₃, and SiO₂ distribution in Pleistocene sediments of the Atlantic Ocean have been compiled. Their analysis made it possible to reveal the manifestation of sedimentation zonation types, such as circum-continental, latitudinal, vertical, and tectonomagmatic. Specific features of the similarity and dissimilarity with analogous zonation types described for the Recent epoch are compared. It is concluded that Recent zonation in the Atlantic Ocean is inherited from the Pleistocene epoch.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"235 - 250"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865608","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}

{"title":"Lithofacies Characteristics of the Fedorovka Chromite Placer Cluster in the Southwestern Cis-Urals (Bashkiria)","authors":"A. V. Lalomov,&nbsp;A. V. Grigorieva,&nbsp;Yu. N. Ivanova,&nbsp;A. A. Bochneva","doi":"10.1134/S0024490226600079","DOIUrl":"10.1134/S0024490226600079","url":null,"abstract":"<p>The structure of the Fedorovka chromite-bearing placer cluster, located in the East European Platform adjacent to the Southern Urals, is divided into two facies-stratigraphic complexes of the Middle Permian Biarmian stage: the lower complex, represented by beach and shallow-water sediments of a marine or lacustrine basin, belongs to the Kazanian stage; and the upper alluvial complex, to the late Kazanian (according to other sources, early Urzhumian) stage. The main placer chromite deposits are confined to the beach and shallow water complex (Sabantui placer occurrence), where sedimentation conditions were most favorable for the concentration of heavy minerals. The low-chromite alluvial deposits can serve as a transition zone or intermediate host for basin sediments located to the west. Chemically, Cr-spinels are typical for ophiolite massifs. The nearest massifs (Kraka group) are approximately 200 km away from the Fedorovka cluster. Placer occurrences exhibit features of proximal transport, which can be explained by the overthrust nature of ultramafic massifs and the possibility of more westward ophiolite allochthon migration from the ophiolite suture zone toward the East European Platform during the Permian orogeny. The industrial potential of the Fedorovka placer cluster requires further study. Similar deposits can be discovered within the coastal zone of the Biarmian Basin, located west of folded structures of the Southern Urals.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"251 - 265"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865611","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}

{"title":"The C–O Isotope Geochemistry and Chemostratigraphic Correlation of Ordovician Deposits of the Lisino-10 Borehole Section, Northwestern Russian Plate","authors":"A. V. Zaitsev,&nbsp;B. G. Pokrovsky,&nbsp;G. S. Iskül,&nbsp;V. L. Kosorukov,&nbsp;E. P. Miklyaeva","doi":"10.1134/S0024490226600055","DOIUrl":"10.1134/S0024490226600055","url":null,"abstract":"<p>The borehole “Lisino-10” was drilled on the Izhora Upland, approximately 90 km southwest of St. Petersburg. This study presents the first continuous carbon and oxygen isotope curves obtained from Ordovician carbonate rocks (Latorp–Rakvere regional stages) in the northwestern part of the Russian Plate. Despite relatively small deviations in δ¹³C values (from –2.5‰ to 1.8‰), two positive carbon isotope excursions are clearly identified in the borehole section: (1) the MDICE (Middle Darriwilian Isotopic Carbon Excursion), with a peak δ¹³C value of 1.0‰ in the Loobu Formation, and (2) the GICE (Guttenberg Isotopic Carbon Excursion) at the Sandbian–Katian boundary, with a peak δ¹³C value of 1.8‰ at the boundary between the Vruda and Izvara formations. In addition to these positive excursions, two negative carbon isotope events are also recognized: (1) the BDNICE (Basal Dapingian Negative Isotopic Carbon Excursion), with a minimum δ¹³C value of –2.5‰ in the lower part of the Volkhov Formation, and (2) the LSNICE (Lower Sandbian Negative Isotopic Carbon Excursion), with a minimum δ¹³C value of –1.0‰ in the upper part of the Viivikonna Formation. These results enable carbon-isotope chemostratigraphic correlation of the Lisino-10 section with other regional sections and establish it as a reference section for the Ordovician paleobasin of the Russian Plate.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 3","pages":"287 - 308"},"PeriodicalIF":0.9,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147865612","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}

{"title":"Mineralogical and Geochemical Features and Multistage Formation Model of the Verkhneashutskoe Karst Bauxite Deposit (Kazakhstan)","authors":"N. M. Boeva,&nbsp;D. V. Sivkov","doi":"10.1134/S0024490225700452","DOIUrl":"10.1134/S0024490225700452","url":null,"abstract":"<p>This paper presents the results of a comprehensive mineralogical and geochemical study of karst bauxites in the Verkhneashutskoe deposit (Amangeldy district, Kazakhstan). Modern analytical methods (X-ray fluorescence analysis, scanning electron microscopy with energy-dispersive spectroscopy, synchronous thermal analysis, and infrared spectroscopy) were used to investigate the material composition, textural and structural features, and formation conditions of ores. The GIS modeling established the fundamental role of the karst paleorelief as the main ore-controlling factor. The influence of organic matter (lignites) on the Fe redistribution and the formation of high-quality bauxites and refractory clays were revealed. The presence of biogenic forms of gibbsite and hematite is shown. A model for the multistage formation of the deposit is proposed, integrating the processes of lateritic weathering, karst formation, sedimentation, and diagenetic transformation of the sediment.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 2","pages":"127 - 139"},"PeriodicalIF":0.9,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559884","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}

{"title":"History of Late Holocene Shoreline Changes in the Northern Plain from Bach Dang Estuary to Day River Mouth, Velocity and Causes of Coastal Accretion-Erosion","authors":"Tran Nghi,&nbsp;Trinh Hoai Thu,&nbsp;Renat Shakirov,&nbsp;Natalia Sokolova,&nbsp;Nadezhda Syrbu,&nbsp;Tran Thi Thuy Huong,&nbsp;Le Dinh Nam,&nbsp;Tran Van Phong,&nbsp;Tran Thị Thanh Nhan,&nbsp;Dinh Xuan Thanh,&nbsp;Nguyen Van Tuan,&nbsp;Nguyen Hong Quan","doi":"10.1134/S0024490225700415","DOIUrl":"10.1134/S0024490225700415","url":null,"abstract":"<p>The period from 1 ka BP to the present, the changes of the Northern plain coastline are extremely complex under the impact of nature and human activities; it can be divided into 3 periods: (1) Period from 1 ka BP to 1787: formation of highstand deltaic sandy mud facies complex (M_samHST<span>({text{Q}}_{2}^{3})</span>). The Nam Dinh area is still accreted more strongly than Thai Binh and Ninh Binh. On the contrary, the Bach Dang estuary area was strongly estuaryizated; (2) The period from 1787 to 1960: due to the great flood that broke the Red River dike in 1787, the Red River was filled up and narrowed, to change its flow to the tributary on the Thai Binh side, flowing into the Ba Lat river mouth and the Red River in Nam Dinh turned into the smaller So River; (3) The period from 1960 to present: the Hai Hau coastline began to erode strongly at an average rate of 25 m/year. Meanwhile, the rate of sedimentary accretion at the Day River mouth increased dramatically by 100 m/year.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 2","pages":"195 - 210"},"PeriodicalIF":0.9,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559591","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}