Subjects -> MINES AND MINING INDUSTRY (Total: 82 journals)
Showing 1 - 42 of 42 Journals sorted alphabetically
American Mineralogist     Hybrid Journal   (Followers: 16)
Applied Earth Science : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 4)
Archives of Mining Sciences     Open Access   (Followers: 3)
AusiMM Bulletin     Full-text available via subscription   (Followers: 1)
BHM Berg- und Hüttenmännische Monatshefte     Hybrid Journal   (Followers: 2)
Canadian Mineralogist     Full-text available via subscription   (Followers: 7)
CIM Journal     Hybrid Journal   (Followers: 1)
Clay Minerals     Hybrid Journal   (Followers: 9)
Clays and Clay Minerals     Hybrid Journal   (Followers: 5)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Contributions to Mineralogy and Petrology     Hybrid Journal   (Followers: 14)
Environmental Geochemistry and Health     Hybrid Journal   (Followers: 3)
European Journal of Mineralogy     Hybrid Journal   (Followers: 14)
Exploration and Mining Geology     Full-text available via subscription   (Followers: 3)
Extractive Industries and Society     Hybrid Journal   (Followers: 2)
Gems & Gemology     Full-text available via subscription   (Followers: 2)
Geology of Ore Deposits     Hybrid Journal   (Followers: 5)
Geomaterials     Open Access   (Followers: 3)
Geotechnical and Geological Engineering     Hybrid Journal   (Followers: 9)
Ghana Mining Journal     Full-text available via subscription   (Followers: 3)
Gold Bulletin     Hybrid Journal   (Followers: 2)
Inside Mining     Full-text available via subscription  
International Journal of Coal Geology     Hybrid Journal   (Followers: 4)
International Journal of Coal Preparation and Utilization     Hybrid Journal   (Followers: 2)
International Journal of Coal Science & Technology     Open Access   (Followers: 1)
International Journal of Hospitality & Tourism Administration     Hybrid Journal   (Followers: 16)
International Journal of Mineral Processing     Hybrid Journal   (Followers: 8)
International Journal of Minerals, Metallurgy, and Materials     Hybrid Journal   (Followers: 12)
International Journal of Mining and Geo-Engineering     Open Access   (Followers: 4)
International Journal of Mining and Mineral Engineering     Hybrid Journal   (Followers: 8)
International Journal of Mining Engineering and Mineral Processing     Open Access   (Followers: 6)
International Journal of Mining Science and Technology     Open Access   (Followers: 4)
International Journal of Mining, Reclamation and Environment     Hybrid Journal   (Followers: 6)
International Journal of Rock Mechanics and Mining Sciences     Hybrid Journal   (Followers: 9)
Journal of Analytical and Numerical Methods in Mining Engineering     Open Access   (Followers: 1)
Journal of Applied Geophysics     Hybrid Journal   (Followers: 18)
Journal of Central South University     Hybrid Journal   (Followers: 1)
Journal of China Coal Society     Open Access  
Journal of China University of Mining and Technology     Full-text available via subscription   (Followers: 1)
Journal of Convention & Event Tourism     Hybrid Journal   (Followers: 6)
Journal of Geology and Mining Research     Open Access   (Followers: 10)
Journal of Human Resources in Hospitality & Tourism     Hybrid Journal   (Followers: 9)
Journal of Materials Research and Technology     Open Access   (Followers: 2)
Journal of Metamorphic Geology     Hybrid Journal   (Followers: 17)
Journal of Mining Institute     Open Access  
Journal of Mining Science     Hybrid Journal   (Followers: 5)
Journal of Quality Assurance in Hospitality & Tourism     Hybrid Journal   (Followers: 6)
Journal of Sustainable Mining     Open Access   (Followers: 3)
Journal of the Southern African Institute of Mining and Metallurgy     Open Access   (Followers: 6)
Lithology and Mineral Resources     Hybrid Journal   (Followers: 4)
Lithos     Hybrid Journal   (Followers: 11)
Mine Water and the Environment     Hybrid Journal   (Followers: 6)
Mineral Economics     Hybrid Journal   (Followers: 2)
Mineral Processing and Extractive Metallurgy : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 14)
Mineral Processing and Extractive Metallurgy Review     Hybrid Journal   (Followers: 5)
Mineralium Deposita     Hybrid Journal   (Followers: 4)
Mineralogia     Open Access   (Followers: 2)
Mineralogical Magazine     Hybrid Journal   (Followers: 1)
Mineralogy and Petrology     Hybrid Journal   (Followers: 5)
Minerals     Open Access   (Followers: 2)
Minerals & Energy - Raw Materials Report     Hybrid Journal   (Followers: 1)
Minerals Engineering     Hybrid Journal   (Followers: 14)
Mining Engineering     Full-text available via subscription   (Followers: 7)
Mining Journal     Full-text available via subscription   (Followers: 4)
Mining Report     Hybrid Journal   (Followers: 3)
Mining Technology : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 4)
Mining, Metallurgy & Exploration     Hybrid Journal  
Natural Resources & Engineering     Hybrid Journal  
Natural Resources Research     Hybrid Journal   (Followers: 5)
Neues Jahrbuch für Mineralogie - Abhandlungen     Full-text available via subscription   (Followers: 1)
Physics and Chemistry of Minerals     Hybrid Journal   (Followers: 4)
Podzemni Radovi     Open Access  
Rangeland Journal     Hybrid Journal   (Followers: 4)
Réalités industrielles     Full-text available via subscription  
Rem : Revista Escola de Minas     Open Access  
Resources Policy     Hybrid Journal   (Followers: 4)
Reviews in Mineralogy and Geochemistry     Hybrid Journal   (Followers: 5)
Revista del Instituto de Investigación de la Facultad de Ingeniería Geológica, Minera, Metalurgica y Geográfica     Open Access  
Rock Mechanics and Rock Engineering     Hybrid Journal   (Followers: 9)
Rocks & Minerals     Hybrid Journal   (Followers: 5)
Rudarsko-geološko-naftni Zbornik     Open Access  
Transactions of Nonferrous Metals Society of China     Hybrid Journal   (Followers: 9)
Similar Journals
Journal Cover
Lithology and Mineral Resources
Journal Prestige (SJR): 0.664
Citation Impact (citeScore): 1
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1608-3229 - ISSN (Online) 0024-4902
Published by Springer-Verlag Homepage  [2653 journals]
  • Architecture of the Southern Marginal Zone of the Upper
           Jurassic–Valanginian Carbonate Platform of the Northeastern Caucasus
           (Dagestan, Shakhdag Massif)
    • Abstract: The structure of the southern marginal zone of the Upper Jurassic–Valanginian carbonate platform, Northeastern Caucasus, is considered with the Dagestan sector of the Shakhdag Massif as example. The massif consists of several large genetically diverse sedimentary complexes: (1) Upper Jurassic basal complex represented by the shallow-water terrigenous and carbonate sediments, which were formed under unstable sedimentation conditions; (2) reef complex ascribed to the barrier reef system; and (3) sedimentary sequence with the typical clinoform structure and the southwestward dip, toward the Dibrar trough. The formation of the marginal zone of the carbonate platform was mainly determined by (1) climatic conditions (transition from the humid climate in the Early and Middle Jurassic to the arid climate in the Late Jurassic) and (2) differences in the tectonic evolution of different structural-facies zones (weak subsidence of the Northeastern Caucasus, where carbonate platform was formed, and intense subsidence to the south in the flysch trough area). The formation of the internal structure of the Shakhdag Massif was mainly defined by the eustatic sea-level fluctuations.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060032
       
  • Postglacial Deposits of the Dal’nyaya Taiga Group: Early Vendian in the
           Ura Uplift, Siberia. Communication 2. Ura and Kalancha Formations and
           History of the Basin
    • Abstract: The paper presents the facies characteristics and sequence-stratigraphic reconstructions of the Lower Vendian postglacial deposits of the Dal’nyaya Taiga Group (Ura Uplift, Patom basin, Siberia). The section is divided into two sequences: the first sequence corresponds to the Barakun Formation; the second sequence, to the Ura and Kalancha formations. Together, they make up a continuous transgressive-regressive succession, with its significant part formed in a deep-water zone of the low-angle (about 1°) homoclinal carbonate–terrigenous and clayey–carbonate ramps. The upper sequence boundary passing along the top of deposits in the Kalancha carbonate platform corresponds to the stratigraphic hiatus at the Zhuya Group base. The fine-grained siliciclastic material, which makes up as much as 50 vol % of the Ura sediments, has an eolian origin. Probably, high activity of eolian processes promoted by a moderately cold arid or semiarid climate at that time was one of the reasons for high bioproductivity in the paleobasin. The consequent large-scale burial of organic matter could foster the reactivation of methanogenic processes. The lithological features of sediments were responsible for their thixotropic state that provoked the slumping of sedimentary masses during high seismic activity.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060081
       
  • Thermobaric Depth Settings of Sedimentary Rock Basins and Their Fluid
           Dynamics: Communication 1. Zonation of the Stratispheric Structure and
           Constraints of Anomalous High and Superhigh Fluid Pressures
    • Abstract: The paper addresses zonation of the stratisphere: thermobaric conditions in its deep zones with anomalous high (AHP) and superhigh (SHP) fluid pressures, as well as main types of fluid-dynamic setting in the upper zone. Mechanisms of the clay dehydration and processes of oil-and-gas formation governing the development of superhigh fluid pressures in the lower zone of rock formation are also discussed.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060044
       
  • Isotope Compositions (δ 13 C, δ 18 O) of Manganese Carbonates of the
           Porozhinsk Deposit (Yenisei Ridge, Krasnoyarsk Region)
    • Abstract: New carbon and oxygen isotope data are reported on carbonate ores and host dolomites (upper Pod”emsk subformation) of the Porozhinsk manganese deposit. Manganese carbonates filling the karst depression of the Porozhinsk area are characterized by low δ13C (–14.6…–9.5‰, PDB) and δ18O (18.8…22.1‰, SMOW). These data indicate that the carbonate formation was contributed by the isotopically light carbon, which was released during the decomposition of organic matter, while waters of the ore-precipitating solutions were presumably of meteoric origin. Host dolomites (Porozhinsk and Mokhovoi areas) are characterized by the heavier carbon (–1.9…2.0‰) and oxygen (23.3…27.7‰) isotope compositions, which are presumably typical of carbonate sediments of the Late Neoproterozoic sea basin.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060056
       
  • Variability in Contents of the Major Ore Components of Ferromanganese
           Formations in the Lakes–Seas–Oceans Series
    • Abstract: Based on statistical methods, the available literature data were processed to analyze regularities in the distribution of five ore elements (Fe, Mn, Cu, Co, Ni) in ferromanganese nodules and crusts in an idealized lakes–seas–oceans profile. Application of the cluster analysis confirmed the regularities revealed by calculations of the mean contents of these elements and unraveled some additional features of their distribution.
      PubDate: 2018-11-01
      DOI: 10.1134/S002449021806007X
       
  • Glauconite Sand from the Terrace of the Patagonian Continental Slope,
           Southwestern Atlantic
    • Abstract: This brief communication describes the first finding of glauconite sand alternating with calcareous foraminiferal–coccolithic ooze on the Piedra Buena contourite terrace of the Patagonian continental slope at a depth of 2327 m. It is suggested that the fine-sand glauconite grains were supplied from the shelf during glaciations, rewashed and sorted by alongslope (contour) currents of the Circumpolar Antarctic waters with the formation of sandy glauconite contourites.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060068
       
  • Specific Features of Sulfide Ores in the Pobeda Hydrothermal Cluster,
           Mid-Atlantic Rise 17°07′–17°08′ N
    • Abstract: Based on materials obtained in Cruise 37 of the R/V Professor Logatchev (2014‒2015), the paper discusses formation conditions, morphology, isotope age, and mineral and chemical composition of sulfide ores in the Pobeda-1 (17°08.7′ N MAR) and Pobeda-2 (17°07.45′ N MAR) hydrothermal ore fields (Pobeda ore cluster) discovered in blocks 37 and 39 confined to the Russian exploration area. Morphogenetic types of ores are defined and their formation conditions are examined.
      PubDate: 2018-11-01
      DOI: 10.1134/S0024490218060020
       
  • Ferromanganese Crusts in the Central Basin, Sea of Japan
    • Abstract: The paper presents a comparative analysis of ferromanganese crusts and concretions (FMC) recovered during the dredging of 14 seamounts in the Central Basin, Sea of Japan. The major rock-forming elements in FMC are Mn, Fe, and Si. In terms of the Mn content, the studied 53 samples are divided into four groups: (1) less than 10% (given than concentrations of 2–8% are lacking); (2) 10‒25%; (3) 25‒42%; and (4) 42‒63%. The (Mn + Fe)/Si ratio increases from group 1 to group 4, and average value in them is 1.6, 2.5, 6.7, and 70.7, respectively. Taking Fe/Si and Mn/Si values into consideration, concretions of these groups belong to the following varieties: (1) ferrosiliceous; (2) mangano-ferrosiliceous; (3) siliceous-ferromanganese, and (4) manganiferous. The highest concentration of nonferrous metals is observed in FMC of groups 2 and 3. Their concentration is slightly lower in group 4 and very low in group 1. The internal structure of FMC in these groups is variable, suggesting their different formation settings. Crusts of group 1 were formed during the precipitation of Mn from a hydrothermal plume on the older ferrosiliceous crusts. Crusts of groups 2 and 3 were likely formed by the diffuse percolation of Mn-bearing hydrothermal solutions along fractures and weakened zones in volcanic rocks, with their subsequent cementation by manganiferous hydroxides from sedimentary or volcaniclastic deposits on seamounts. Crusts of group 4 were formed at sites of the hydrothermal solution discharge on the seafloor. FMC of different groups are recovered during the dredging of most volcanic seamounts in the Central Basin (Sea of Japan). Since the dredging is accomplished at a depth interval of a few hundreds of meters, the detection of concretions of a certain type is governed by the distance to the nearest hydrothermal source.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050024
       
  • Postglacial Deposits of the Dal’nyaya Taiga Group: Early Vendian in the
           Ura Uplift, Siberia. Communication 1. Barakun Formation
    • Abstract: Analysis of modern paleontological, isotope-geochemical, and paleotectonic data on Vendian rocks in the Patom Basin (Siberia) is presented. The paper discusses depositional settings and features of the specifics of sedimentogenesis of the Barakun carbonate–terrigenous formation, which matches the lower strata of postglacial deposits of the Dal’nyaya Taiga Group. It is shown that formation of the transgressive Barakun Formation was governed by relatively deep-water (below the storm wave base) distal settings of a low-angle (about 1°) homoclinal ramp. Its formation was related to a more intense sagging of the northeastern part of the Ura Uplift. The formation of breccias and intrusions was fostered by high seismic activity of the paleobasin recorded in plastic deformations along with liquefaction and fluidization of sedimentary beds. The constant seismic destabilization of bottom beds provoked small but frequent landslides without the formation of turbidite flows. The continuous dislocation of sediments toward the depocenter actively governed specifics of the ramp architecture. The unusual behavior of sediments during their long-term thixotropic residence could be related to a high content of organic matter, processes of methanogenesis and, probably, dissemination of gas hydrate compounds.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050073
       
  • Basal Moraines: Communication 2. Identification and Some Concepts of Their
           Genetic Interpretation
    • Abstract: Common basal moraines display diverse glaciodynamic structures inherited from the parental moraine-containing ice. Since these glacial diamictons are marked by instable structure and composition, they can resemble sediments of another origin and their identification is a difficult task. We cannot make substantiated genetic conclusions based on certain lithological properties typical of glacial diamictons. Only a set of specific features can provide sufficiently reliable determination of their glacial nature. Other methodical approaches applied in different regions, the Barents Sea included, for the identification of glacial diamictons based on the highly superficial analysis of some (usually secondary) features lead to a biased genetic interpretation of moraines.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050036
       
  • Mercury in the Sedimentary Cover and Basalts of the Basement in the Recent
           Hydrothermal Activity Area, Middle Valley, Juan de Fuca Ridge
    • Abstract: The content and distribution of mercury in Holocene–Upper Pleistocene turbidites, hemipelagic sediments intercalating therein, as well as basement basalts are studied. Samples of sediments were taken from the core of Holes 858A, 858B, 858C, 858D, and 858F. Basalt samples were taken from Holes 858F and 858G drilled during Leg 139 ODP in the Middle Valley (Juan de Fuca Ridge) in the Dead Dog hydrothermal field with a high heat flow (4–20 W/m2) and numerous vents with temperature ranging from 234 to 276°C. Samples of sediments and basalts with the background Hg content were taken from the core of Holes 855A, 855C, and 855D are located beyond the hydrothermal system in the base of the fault scarp on the eastern Middle Valley. In rocks, the content of Hg and its occurrence form were determined by the atomic absorption spectrometry with thermal atomization method; the chemical composition, by the XFA and ICP-MS methods. Sections of the sedimentary cover and basalt basement are marked by an alternation of “layer cake” type units with low and high contents of Hg. Mercury occurs in rocks in the physically adsorbed and mineral forms. The Hg concentration in some parts of the sedimentary section is anomalously high: up to 9696 ppb in Hole 858B and 7260 ppb in Hole 858C. In metalliferous sediments, the Hg content is 3130 ppb. Its maximum content (up to 23200 ppb) is recorded in basalts.
      PubDate: 2018-09-01
      DOI: 10.1134/S002449021805005X
       
  • Isotope-Geochemical Features and Genesis of Gases in the East Carpathian
           Region
    • Abstract: The paper presents data on the composition of a gas phase of underground fluids in the East Carpathian region, including 3He/4He, 40Ar/36Ar, and 4He/20Ne ratios. The argon isotope composition of these gases was used to estimate the fractions of atmospheric Aratm and radiogenic 40Arrad formed in the rocks, N2/Aratm ratio, and to reveal the admixture of nonatmogenic (“excess”) nitrogen in most samples. The CO2 content in gases positively correlates with the fraction of mantle component in fluid helium. At the same time, the CO2 content shows a negative correlation with the total helium (and light 3He enriching mantle derivatives), thus excluding the simultaneous influx of CO2 and helium from a common mantle source in the fluids. A wide spectrum of 3He/4He = R in gases of the region spanning three orders of magnitude confirms the concept of mixing of the crustal and mantle components in the helium. However, even gases with similar R values show a wide scatter of He concentrations. This is mainly caused by the additional influx of other gases: CH4 formed during OM transformation or CO2 released during the thermal metamorphism of carbonate sequences. Correlation of the CH4/3He ratio and the helium isotope composition in the Carpathian gases indicates the crustal origin of hydrocarbons, which formed economic gas pools in the Ciscarpathian Trough and the adjacent part of the Folded Carpathians. Lateral chemical and isotope variations revealed in the underground fluids are related to the tectonic zoning of the region. The helium isotope variations are also consistent with the geodynamic setting of the region (thinning of the crust and lithosphere towards the Pannonian Basin, growth of the background conductive heat flow and corresponding ascent of isotherms). In combination with geothermal data, they reflect specifics of the mantle heat-and-mass flow discharge.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050085
       
  • Lithological and Geochemical Characteristics of the Paleocene/Eocene
           Sediments corresponding to the PETM Biospheric Event in the Eastern Crimea
           (Nasypnoe Section)
    • Abstract: The paper reports lithological and geochemical data on the stratigraphic interval corresponding to the Paleocene/Eocene Thermal Maximum (PETM) event in the Paleogene section of Eastern Crimea (Nasypnoe section). The section is located on the western continuation of the sublatitudinal profile consisting of 15 PETM sections spanning the area from Crimea to Tajikistan (over 2500 km). It is shown that PETM sediments have the negative δ13C and δ18O isotope excursions and are enriched in kaolinite, which is typical of most sections of this interval around the world. At the same time, the extremely low content of organic matter (OM) in sediments of the Nasypnoe section makes them sharply different from the highly carbonaceous rocks of the PETM interval in Central and Eastern Caucasus, and Central Asian regions. This is correlated with the low contents of many chemical elements in the studied rocks, and their extremely high contents in the highly carbonaceous rocks of the easterly sections. Thus, Eastern Crimea in the end of the Paleocene‒beginning of the Eocene was occupied by the low-bioproductive marine paleobasin, whereas the coeval paleobasin in Central Asia was characterized by extremely high bioproductivity owing to the presence of significant amount of phosphorus.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050048
       
  • Devonian Reef Formation in the Caspian Basin Framing
    • Abstract: The Devonian reef formation in the Caspian Basin framing is related to two different formations. The Middle Devonian reefs are confined to an autochthonous terrigenous‒carbonate sequence of the Eifelian–lower Frasnian interval marked by the appearance of isolated domal reefs. The middle–upper Frasnian reefs are related to the carbonate formation and represented by two types: (i) asymmetric reefs on walls of the deep-water bays opening toward the Caspian microcean-bay; and (ii) solitary, relatively symmetric (in transverse section) reefs within these bays. The reef formation was characterized by prominent cyclic pattern. The framework reef formation ended before the terminal Frasnian, i.e., before the Kellwasser Event, with which the biotic crisis and faunal mass extinction was related.
      PubDate: 2018-09-01
      DOI: 10.1134/S0024490218050061
       
  • Problem of the Application of Mathematical Methods in Geology
    • Abstract: The most characteristic errors in the application of mathematical-statistic and modeling methods encountered periodically during the peer reviewing of geological scientific journals are analyzed, and recommendations for their elimination are given. Problems of the determination of relative errors in the simplified mathematical models are discussed. Necessity of calculating parameters of the background value and eliminating its influence on computation of the “useful signal” is shown. A graphic method for determining the minimum anomalous content is also proposed for discussion and testing. Characteristic errors and necessity for maintaining constraints of the application of correlation analysis are demonstrated.
      PubDate: 2018-07-01
      DOI: 10.1134/S002449021804003X
       
  • Upper Jurassic Rock Depositional Settings in the Baidar Valley and
           Evolution of the Crimean Carbonate Platform
    • Abstract: The paper presents results of the lithological study of Upper Jurassic limestones, flyschoids and limestone breccias on the southern side of the Baidar Valley in the Crimean Mountains. Study of the microfacies revealed that the limestones are represented by deposits on lagoons, platform edge shoals, reefs, and forereef aprons on the carbonate platform slope. Flyschoids include deposits in the distributive turbidite channels and hemipelagic sediments in the deep-water part of the basin. Limestone breccias were formed by gravitation flows on the carbonate platform toe-of-slope and slope. The presence of gravitation deposits in the Upper Jurassic carbonate complexes of the Crimean Mountains can testify to the primary clinoform structure of this sedimentary sequence. Comparison of the obtained sedimentological data made it possible to reconstruct the facies model of the Crimean carbonate platform and main episodes of its formation. Development of the carbonate shelf was related to two transgressive-regressive cycles. A dome-shaped reef was formed away from the coast at the initial (Oxfordian) stage. The carbonate platform was formed at the early Kimmeridgian lowstand stage when sediments were deposited in the internal part of the platform adjacent to land. In the late Kimmeridgian and early Tithonian, configuration of the carbonate platform profile resembled a distally steepened ramp, and its active progradation and shelf expansion took place in the course of transgression. Regression in the late Tithonian–early Berriasian led to regressive transformation of the ramp into platform with a flattened shallow-water shelf. Tectonic deformations at the Jurassic/Cretaceous transition promoted the formation of megabreccias on the carbonate platform foreslope. The tectonically reworked rock sequence of the “extinct” carbonate platform was overlapped transgressively by the upper Berriasian or lower Valanginian, relatively deep-water deposits of the Cretaceous platform cover.
      PubDate: 2018-07-01
      DOI: 10.1134/S0024490218040065
       
  • Basal Moraines: Communication 1. Essential Lithological Features
    • Abstract: The facies complex of basal moraines with glaciodynamic structures (common basal moraines) dominates among deposits of the given genetic type. These moraines represent glacial diamictons of diverse structure and lithology. Some of their features are also typical of sediments of other genetic types. Therefore, a comprehensive study of glacial diamictons and their occurrence mode on the glacial bed (unconsolidated or consolidated) within large outcrops is methodically correct. Only such studies can unravel the wide range of specific features typical of common basal moraines.
      PubDate: 2018-07-01
      DOI: 10.1134/S0024490218040028
       
  • Phosphides in Volcanic Seamount Basalts in the Sea of Japan
    • Abstract: Electron microprobe data on phosphide grains detected for the first time in basalts from volcanic edifices in the Sea of Japan are presented. The find of phosphides can testify to the endogenic source of phosphorus and, consequently, volcanogenic hydrothermal origin of phosphorites in the Sea of Japan.
      PubDate: 2018-07-01
      DOI: 10.1134/S0024490218040077
       
  • Hazard of Submarine Slides West of the Spitsbergen Archipelago
    • Abstract: The paper presents description of the relief, open fracture system, and submarine slides west of the Spitsbergen Archipelago in the Vestnesa Ridge area based on the data collected during cruises of the R/V Akademik Nikolaj Strakhov. Data pertaining to seismicity, as well as gas flares, chimneys, and holes are given based on the published sources. Analysis of the full information suggests the development of conditions favorable for large submarine landslides west of the Spitsbergen Archipelago.
      PubDate: 2018-07-01
      DOI: 10.1134/S0024490218040041
       
  • C, О, S, and Sr Isotope Geochemistry and Chemostratigraphy of Ordovician
           Sediments in the Moyero River Section, Northern Siberian Platform
    • Abstract: The 87Sr/86Sr ratio in gypsum and limestones of the Ordovician section of the Moyero River decreases from the bottom upward from 0.7091‒0.7095 in the Irbukli Formation (Nyaian Regional Stage, ~Lower Ordovician Tremadocian Stage) to 0.7080 in the upper part of the Dzherom Formation (Dolborian Regional Stage, ~Upper Ordovician Katian Stage), which is well consistent with biostratigraphic subdivision of the section and existing concept concerning the strontium isotope evolution of the World Ocean. The most characteristic feature of the carbon isotope curve is decrease of δ13С values in carbonates from weakly positive values (0.5…1.1‰) in the Irbukli Formation (Nyaian Regional Stage) to sharply negative values (–5.4...–5.8‰) in the middle part of the Kochakan Formation (top of the Kimaian Regional Stage, ~end of the Dapingian–base of the Darriwilian Stage). Increase of δ18О from 20‒22‰ to 26‒28‰, the negative correlation of δ13С and δ18О, and decrease of δ34S in gypsum from 30‒32‰ to 22‒24‰ in this interval indicate that the 13С depletion of carbonates was not related to the sulfate reduction and oxidation of organic matter during diagenesis and that the negative δ13С excursion was of primary nature. The presence of negative δ13С anomalies at this stratigraphic level in Ordovician sections of the South and North America (Buggish et al., 2003; Edwards and Saltzman, 2014; McLaughlin et al., 2016) indicates the global or subglobal distribution of this event, which was possibly related to the emergence of the oldest ground vegetation. Against the general decrease of δ13С, the lower part of the section reveals three low-amplitude (1‒2‰) positive excursions, the position of which in general confirms the existing correlation scheme of the Moyero River section with the international scale. The upper part of the section is characterized by the alternation of low-δ13С intervals (from–2 to–3‰) and brief positive excursions with amplitude of 0.5‒1.3‰. The positive δ13С excursion terminating the Ordovician section of the Moyero River correlates with the δ13С excursion in the middle Katian Stage, while the δ13С excursion in the lower part of the Baksian Regional Stage correlates with the excursion marking the Katian–Sandbian boundary.
      PubDate: 2018-07-01
      DOI: 10.1134/S0024490218040053
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 3.235.25.169
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-