Lithology and Mineral Resources最新文献

{"title":"Authigenic Biotite in Quaternary Sediments from the Contact Zone with a Thick Sill, Hole DSDP 485/485A, Gulf of California","authors":"B. A. Sakharov,&nbsp;V. B. Kurnosov","doi":"10.1134/S0024490225700348","DOIUrl":"10.1134/S0024490225700348","url":null,"abstract":"<p>Authigenic finely dispersed biotite was found in a single sample from Hole DSDP 485/485A, in the southern Gulf of California, south of the Tamayo Fracture Zone. The sample was taken from Quaternary terrigenous sediments that overlie and alternate with several massive basaltic sills of varying thicknesses. It is noteworthy that the biotite makes up practically entire sample. The formation of the biotite is related to the metasomatic transformation of terrigenous clay minerals at the base of the thickest basaltic sill (30.95 m) by hydrothermal fluids, which were mobilized owing to the emplacement of hot magma. The study of the structural, crystallochemical, and morphological features of the biotite from this sample revealed characteristics that are almost identical to those of authigenic biotite recently discovered in Pleistocene terrigenous sediments from the Central Hill in the Escanaba Trough in the southern Gorda Ridge (northeastern Pacific Ocean).</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"66 - 73"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336366","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":"Geochemical and Statistical Analysis of Terra Rossa Clay Minerals: a Case Study from Osmaniye Almanpinari Region, Türkiye","authors":"Cihan Yalçın,&nbsp;Pınar Kochan,&nbsp;Yusuf Uras","doi":"10.1134/S0024490225700312","DOIUrl":"10.1134/S0024490225700312","url":null,"abstract":"<p>This study examines the mineralogical composition, geochemical properties, and origin of the red clays from the Almanpınarı region (Osmaniye, Türkiye), which are akin to Mediterranean-type Terra Rossa soils. Mineralogical investigations, specifically X-ray diffraction (XRD), indicated that the predominant clay minerals are illite, kaolinite, and smectite. Geochemical data acquired by XRF and ICP-MS techniques suggest that these clays originate from the extensive chemical weathering of felsic parent rocks, as demonstrated by increased Al₂O₃, Fe₂O₃, and light rare earth element (LREE) concentrations. The samples demonstrate low CaO content and elevated SiO₂/Al₂O₃ ratios, indicating significant leaching and minimal carbonate impact. Statistical assessments, such as Principal Component Analysis (PCA) and correlation analyses, substantiate the genetic association between mineralogical characteristics and elemental distributions. The findings align with international research on Terra Rossa formations, indicating that the red clays in the Almanpınarı region are polygenetic, having originated from diverse climatic and tectonic conditions. This research presents a comprehensive geochemical and statistical analysis that enhances our understanding of the Terra Rossa clay formation processes and their environmental implications.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"94 - 113"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336364","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":"Facies and Hydroclimatic Reconstructions of Salt Formation Conditions in the Verkhnekamsk Deposit","authors":"T. A. Utkina,&nbsp;I. I. Chaikovskiy","doi":"10.1134/S0024490225700336","DOIUrl":"10.1134/S0024490225700336","url":null,"abstract":"<p>The study of salt varve structure in the Verkhnekamsk deposit revealed that the Verkhnekamsk halogenic basin was characterized in the Kungurian by stable hydroclimatic conditions during the entire salt precipitation period. The identified salt types suggest that salt was accumulated in the spring-summer only under deep hypolimnetic conditions at the basin bottom (drusy and drusy-and-sparry gray and white halitites, drusy and dendritic carnallitites). In the cooler autumn-winter period, salt was deposited at any basin depth (cumulative halite, sylvite, carnallite, polygranular crusts of carnallite). The median ratio of thicknesses of the bottom and cumulative salts indicates the predominance of summer precipitation over the winter variety, and their single change within the varve indicates a warm monomictic hydrodynamic setting of the Verkhnekamsk salt basin.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"74 - 86"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336365","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":"Formation of Placers at the Expense of Cretaceous Auriferous Conglomerates (Aldan–Stanovoi Shield)","authors":"E. E. Loskutov,&nbsp;Z. S. Nikiforova,&nbsp;A. I. Zhuravlev,&nbsp;A. I. Ivanov","doi":"10.1134/S0024490225700361","DOIUrl":"10.1134/S0024490225700361","url":null,"abstract":"<p>The results of the study of mineralogical and geochemical features of native gold from placer alluvial sediments in the Yurskii Creek (right tributary of the Gonam River) and Lower Cretaceous conglomerates are presented. It was revealed that Cretaceous conglomerates and the productive layer of the alluvial placer are composed of clastic material with similar petrographic composition (leucogranites, granite-gneisses, metagabbro, diaphthorized sericite–chlorite–epidote–quartz shales, and quartzites. Gold from Cretaceous alluvial sediments and conglomerates has the same typomorphic features and is characterized mainly by flaky and platy forms 0.1‒0.25 mm in size. In some places, large gold particles, characterized by shagreen surface and indentation imprints of minerals of the host sediments (often with through holes), were also observed. The fineness of gold varies widely from 720 to 1000‰. Inclusion minerals, such as pyrite, chalcopyrite, galena, and difficultly identified aluminosilicates were found in the native gold from conglomerates. A similar set of inclusion minerals was also found in native gold from alluvial sediments of the Yurskii Creek. Commonality of the mineralogical and geochemical features of placer gold from alluvium and conglomerates, as well as similarity of the petrographic composition of clastic material in the conglomerates and alluvial productive horizon suggest that the Yurskii Creek placer was formed at the expense of gold from the Cretaceous conglomerates. The obtained data will provide a more correct choice of the prospecting method and determination of the criteria of regional gold placer localization in the future.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"40 - 49"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336805","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":"Fossil Resins from Cretaceous Sediments of the Taimyr Peninsula: Molecular Composition and Thermal Properties","authors":"O. V. Martirosyan,&nbsp;M. A. Bogdasarov","doi":"10.1134/S002449022570035X","DOIUrl":"10.1134/S002449022570035X","url":null,"abstract":"<p>For the first time, transformation of the molecular composition (based on infrared spectroscopy data) and thermal properties of fossil resins from the Taymyr Peninsula over geological time (from Albian to Santonian) were studied. This is important for understanding the processes of their formation and alteration. Fossil resins of this region are mainly brittle varieties (retinites). However, gedanite can also occur together with them. It was established for the first time that, in addition to the previously known finds of gedanite in the Hetian and Dolgan formations, gedanite can also occur in the Ognev and Begichev formations, suggesting a more wide distribution of gedanite in northern Eurasia than previously thought and pointing to general formation conditions of this resin type. It is shown that their molecular composition and thermal behavior change with time, but not significantly. Mechanisms of these alterations are different for gedanite and retinite.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"50 - 65"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336806","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":"Average Chemical Composition of Sandy and Clayey Rocks in Large Different Age Structural Zones of Continents on Various Discriminant Diagrams","authors":"A. V. Maslov","doi":"10.1134/S0024490225700385","DOIUrl":"10.1134/S0024490225700385","url":null,"abstract":"<p>Based on the volume-weighted average chemical compositions of sandy and clayey rocks of platforms, geosynclines/mobile zones, and orogenic zones published in 1990 by A.B. Ronov and coauthors, the distribution of their data points on discriminant diagrams is considered. They provide insight into rock complexes eroded in paleocatchments and paleogeodynamic settings of the accumulation of sedimentary sequences. It is shown that the change in the bulk chemical composition of sandstones from platforms to orogenic zones in the Late Precambrian, Paleozoic, and Mesozoic–Cenozoic has its own specifics. For example, in the K₂O/Na₂O–SiO₂/Al₂O₃ diagram, the chemical composition of the Upper Precambrian sandstones in the specified series changes toward a decrease in the values of both parameters. Accordingly, their data points “shift” from the field of passive continental margins (PM) to the field of active continental margins (ACM). Data points of Paleozoic and Mesozoic–Cenozoic sandstones from platform areas to geosynclinal areas demonstrate the same trend, but later the trend becomes opposite. The position of data points of sandstones of similar but different age tectonic structures also varies notably in the diagrams. In the same K₂O/Na₂O–SiO₂/Al₂O₃ diagram, data points of platform sandstones correspond almost exclusively to the PM field, while those of sandstones from orogenic areas do not go beyond the ASM field. The data point of Late Proterozoic geosynclinal sandstones is also located in the PM field, while the data point of similar Mesozoic–Cenozoic sandstones is in the field of mature island-arc systems (A1). In the absence of cardinal variations in the style of geodynamics of the Late Precambrian and Phanerozoic, all this may be a consequence of changes over time, first of all, in the composition of provenances, the intensification of orogeny, and variations in other factors (local included) that controlled the accumulation of sedimentary sequences over the past ~1.8 Ga.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"61 1","pages":"1 - 15"},"PeriodicalIF":0.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336808","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":"Provenance of Surface Sediments from Some Sedimentary Basins in the Western South China Sea: Evidence from Trace Elements Analysis","authors":"Nguyen Hoang,&nbsp;Le Duc Luong,&nbsp;Ryuichi Shinjo,&nbsp;R. B. Shakirov,&nbsp;N. S. Syrbu,&nbsp;N. S. Lee","doi":"10.1134/S0024490225700245","DOIUrl":"10.1134/S0024490225700245","url":null,"abstract":"<p>This study presents the distribution and provenance of surface sediments from the Red River basin, Phu Khanh basin, and Southwest Sub-basin in the South China Sea. Thirty-eight surface sediment samples classified as clay, mud, and silt were analyzed for rare earth elements and yttrium (REY). The mean ΣREY concentrations in sediments are 220.4, 238.5, and 264.8 ppm for the Red River basin, Phu Khanh basin, and Southwest sub-basin. Light rare earth elements (LREE) constitute the majority of the ΣREE. The chondrite-normalized REE pattern suggested that all surface sediments appear to originate from the continental sources. The Red River in the north and the Mekong River in the south primarily contribute sedimentary materials in these basins.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"754 - 768"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493340","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":"Genetic Types of Ore-Bearing Sediments in the Northern Near-Equatorial Zone of the Mid-Atlantic Ridge","authors":"I. F. Gablina,&nbsp;A. D. Lyutkevich","doi":"10.1134/S0024490225700300","DOIUrl":"10.1134/S0024490225700300","url":null,"abstract":"<p>The study of bottom sediments in hydrothermal fields of the Russian Atlantic Exploration area revealed two genetic types of metalliferous and ore-bearing sediments formed under the influence of different processes. Type 1 was formed due to the precipitation of ore minerals from the hydrothermal plume; type 2, under the influence of diffuse hydrothermal flows entering the sediments from substrate rocks. These genetic types of ore-bearing and metalliferous sediments formed in different conditions are marked by distinctive features: distribution pattern in the section and over the area, mineral and geochemical composition, and textural and structural features.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"635 - 653"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493344","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":"U–Th–Pb Isotopic Dating of Detrital Zircons and Garnet and Tourmaline Indicators from Molassic Deposits of the Belorechenskaya Formation (Western Cis-Caucasia): Geological Implications","authors":"S. Yu. Kolodyazhny,&nbsp;N. B. Kuznetsov,&nbsp;E. I. Makhinya,&nbsp;A. V. Chefranova,&nbsp;T. V. Romanyuk,&nbsp;E. A. Shalaeva,&nbsp;A. S. Novikova,&nbsp;I. V. Latysheva,&nbsp;A. V. Drazdova,&nbsp;A. S. Dubenskiy,&nbsp;V. S. Sheshukov,&nbsp;K. I. Dantsova,&nbsp;G. E. Parfenov","doi":"10.1134/S0024490225700270","DOIUrl":"10.1134/S0024490225700270","url":null,"abstract":"<p>In order to determine the provenance areas of Cenozoic sedimentary basins in the Western Cis-Caucasia and to reconstruct the paleotectonic and paleogeographic environments of orogenic molasse formation in these basins, the sands and sandstones from Quaternary sequences corresponding to two stratigraphic levels were studied: (1) the lower part of the Belorechenskaya Fm section (Gelasian) (sample MK-29) and (2) sequences forming a series of adjacent terraces (Upper Neopleistocene) on the southwestern outskirts of the Maikop town (sample MK-30). U‒Th‒Pb isotope dating and morphological study of detrital zircons (<b>dZr</b>), as well as mineralogical analysis of garnet and tourmaline grains extracted from the heavy fraction of the samples have been performed. Density probability curves (DPC) characterizing the distribution of <b>dZr</b> ages from the studied samples were obtained. Together with previously published similar data on the Eopleistocene sands from the middle part of the Belorechenskaya Fm (sample K23-073) and the Holocene sands of the modern alluvium of the Belaya River (sample K22-032), this made it possible to obtain a summary characteristics for four successive stratigraphic levels of Quaternary deposits, demonstrating a temporal change in the provenance signal in the orogenic molasse of the Western Cis-Caucasia. The studied complex of clastic rocks participating in the Quaternary orogenic molasse contains well-defined signs of the “southern” (Caucasian) provenance signal presented in the sets of U‒Pb isotope ages of <b>dZr</b> grains. In the case under consideration, the “southern” signal is represented by peculiar components associated with the erosion of: (1) Lower and Middle Jurassic volcanogenic-sedimentary, volcanogenic, subvolcanic, and intrusive rocks of the Cimmerian structural level (Cimmerian provenance signal); (2) Early Paleozoic and Late Neoproterozoic igneous and metamorphic formations of the Cadomian complex (Cadomian provenance signal) as a part of the Hercynian basement. A tendency of a gradual decrease in the intensity of the Cimmerian and increase in the intensity of the Hercynian provenance signals in the stratigraphic units of the Quaternary sequence from the lower to the upper levels of the section has been established. This tendency characterizes a successive deepening of the erosion level of the Greater Caucasus orogen. In the beginning, at the early stages of the formation of the western segment of the orogen in Gelasian, erosion spanned rock complexes mainly of the Cimmerian structural stage. Later, starting from the Eopleistocene and up to the present time, the main source of detrital material became the exposed complexes of the Hercynian basement.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"704 - 724"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493341","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":"Formation Conditions of the Lower Meotian Oolitic Carbonates (Cape Kazantip, Crimea)","authors":"A. I. Antoshkina,&nbsp;L. V. Leonova,&nbsp;V. P. Lyutoev,&nbsp;Yu. S. Simakova","doi":"10.1134/S0024490225700294","DOIUrl":"10.1134/S0024490225700294","url":null,"abstract":"<p>The genesis of oolitic carbonates among the lower Meotian sulfate–carbonate–clayey deposits in the Cape Kazantip sections was investigated. Laboratory studies were conducted using several analytical techniques, such as carbonate chemical analysis, optical polarization microscopy with the computer support for photography and scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), isotopy, gas chromatography (GC), electron paramagnetic resonance (EPR), infrared (IR) spectroscopy, and X-ray diffractometry (XRD). The obtained results show that the chemical composition of oolitic carbonates is characterized by the constant presence of dolomite (11.93‒40.98%) and clayey (2.42‒19.40%) components, as well as the isotopically heaviest values of carbonate carbon (2.74‒5.40‰). These indicate the formation of oolites in saline water of an extremely shallow coastal lagoon. Gypsum is present in oolite cores and as cement in the oolitic carbonates and conglogravelites. Gypsification of sediments, which occurred at the stage of oolite formation during a sharp sea level fall, could be associated with the participation of sulfate ions from meteoric waters in the removal of sediments into the meteoric-vadose zone, possibly, together with the gas-fluid seepage. The occurrence of bottom gas-fluid seeps is corroborated by the detection of mineralized extracellular polymeric substance (EPS) in oolites, as well as the presence of bacterially induced halite, barite, and high-Mn kutnohorite of the dolomite group. Carbonate minerals in oolites are represented by low- and high-Mg calcites and Ca-dolomite. Distribution of the latter variety indicates the possibly primary sedimentary genesis of dolomite microcrystals in the oolite structure.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"654 - 676"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493403","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}