Moscow University Geology Bulletin最新文献

Crystal-Chemical Indicators of Specification of Oxocentered Tetrahedra in Divalent Lead Minerals 二价铅矿物中氧化中心四面体规格的晶体化学指标

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700194

A. D. Podobrazhnykh, T. A. Eremina, E. I. Marchenko, N. N. Eremin

引用次数: 0

A Unique Find of the Ammonite Kamerunoceras (Acanthoceratidae, Ammonoidea) from the Turonian (Upper Cretaceous) of the South–Western Crimea 克里米亚西南部图伦纪（上白垩世）鲑形石 Kamerunoceras（Acanthoceratidae，鲑形目）的独特发现

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700212

E. Yu. Baraboshkin, P. A. Fokin

引用次数: 0

Geochemical and Sanitary–Chemical Characteristics of Water Springs of Bogorodsky and Losino-Petrovsky Districts of Moscow Oblast 莫斯科州博格罗茨基区和洛西诺-彼得罗夫斯基区泉水的地球化学和卫生化学特征

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700285

D. S. Gusarova, D. A. Yablonskaya, O. A. Lipatnikova, T. N. Lubkova, O. R. Filatova

{"title":"Geochemical and Sanitary–Chemical Characteristics of Water Springs of Bogorodsky and Losino-Petrovsky Districts of Moscow Oblast","authors":"D. S. Gusarova, D. A. Yablonskaya, O. A. Lipatnikova, T. N. Lubkova, O. R. Filatova","doi":"10.3103/s0145875224700285","DOIUrl":"https://doi.org/10.3103/s0145875224700285","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article focuses on the results of water parameters (COD, pH, electrical conductivity) and the contents of major ions (Ca<sup>2+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup>, K<sup>+</sup>, <span>({text{NH}}_{4}^{ + })</span>, <span>({text{HCO}}_{3}^{ - })</span>, Cl<sup>–</sup>, <span>({text{SO}}_{4}^{{2 - }})</span>, <span>({text{NO}}_{3}^{ - })</span>) and trace elements (Co, Ni, Cu, Zn, Cd, Pb, Sr, Ba, Mn) for 12 springs in the Bogorodsky and Losino-Petrovsky districts of Moscow oblast. The waters are slightly acidic to near-neutral (pH 5.5–7.5) with the mineralization ranging from 0.07 to 0.5 g/L, the total hardness is 0.63–5.7 mg-eq/L, the water composition is variable. Spring waters are divided into four groups: Cl–SO<sub>4</sub>–HCO<sub>3</sub>–(Mg)–Ca, (SO<sub>4</sub>)–HCO<sub>3</sub>–Cl–Na–Ca; (Cl)–HCO<sub>3</sub>–Ca, and mixed. Based on the thermodynamic calculation using the Visual-MINTEQ program, it was found that the predominant dissolved species of Ba, Sr, Mn, Zn, Cd, Ni, and Co in the waters of the surveyed springs are free ions. For Cu and Pb, the factors for the formation of migration species are the predominant anions of water, as well as the presence of organic matter in water. The COD values and nitrogen compound in the waters of individual springs indicate that the formation of the spring water composition is resulted from the infiltration of atmospheric precipitation through the modern sediments subject to anthropogenic loading. The values of other sanitary–chemical indicators (mineralization, pH, total hardness, chlorides, sulfates, magnesium, sodium, manganese), the content of regulated trace elements are lower than their maximum permissible concentrations in drinking water.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Devonian Forests on Earth: Appearance, Composition of Plants, Types of Forest Ecosystems, and Their Distribution 地球上最早的泥盆纪森林：外观、植物组成、森林生态系统类型及其分布

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700236

A. L. Jurina

{"title":"First Devonian Forests on Earth: Appearance, Composition of Plants, Types of Forest Ecosystems, and Their Distribution","authors":"A. L. Jurina","doi":"10.3103/s0145875224700236","DOIUrl":"https://doi.org/10.3103/s0145875224700236","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article considers the appearance, composition, types, and distribution of the first Devonian fossil forests on Earth, finds of which are extremely rare. There are five known localities: three in the Middle Devonian (Middle Eifelian locality Lindlar in Germany; two Upper Givetian localities Cairo and Gilboa in the USA), and two in the Upper Devonian (Lower Frasnian locality Munindalen on Svalbard in Norway and the Upper Famennian locality Xinhang in China). The terms <i>fossil forest</i>, <i>forests community</i>, and <i>a type of fossil forest</i>, not mentioned by previous researchers, are proposed, and a detailed plan for their description is recommended (formulations are presented only for remains in the status in situ). The stratigraphic sequence of the first forests in the Eifelian–Late Devonian of the Earth’s history, taking into account recently published data, is presented. Two types of forests have been identified with indication of the dominant genera in each type: the cladoxylopsid type, common in the Middle Devonian, and the lycopodiophyte type, typical of the Upper Devonian. A key role of cladoxylopsid ferns in the creation of original arboreal forests due to advantages in the organization of their conducting system is shown.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monographic Paleontological Collections as an Important Source of Information in Paleontological Research 作为古生物学研究重要信息来源的古生物学专集

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700248

N. I. Krupina, A. A. Prisyazhnaya

引用次数: 0

The Formation Conditions of the Evenki Formation in the Lower Reaches of the Podkamennaya Tunguska River, Siberian Platform 西伯利亚地台波德卡缅纳亚通古斯卡河下游埃文基地层的形成条件

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700224

S. I. Merenkova, A. Yu. Puzik, I. V. Afonin, A. A. Medvedkov, E. S. Rabtsevich, R. R. Gabdullin, V. V. Pugach

{"title":"The Formation Conditions of the Evenki Formation in the Lower Reaches of the Podkamennaya Tunguska River, Siberian Platform","authors":"S. I. Merenkova, A. Yu. Puzik, I. V. Afonin, A. A. Medvedkov, E. S. Rabtsevich, R. R. Gabdullin, V. V. Pugach","doi":"10.3103/s0145875224700224","DOIUrl":"https://doi.org/10.3103/s0145875224700224","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The Evenki Formation of the Siberian Platform has been studied on the right bank of the Podkamennaya Tunguska River near the Sulomai settlement (Evenki municipal district of Krasnoyarsk krai). The structures and textures of the composing sediments are described. The main petrogenic oxides have been identified and the normative mineral composition has been determined following this identification. The increase of terrigenous components in the strata indicates periods of enhanced erosion in the provenance area (the Yenisei Ridge). In turn, the increased contribution of feldspars in the middle part of the section shows an intensification of physical weathering in arid conditions. The principal hypotheses of the origin of the Evenki Formation and other recent and ancient tidal flat and sabkha facies are outlined. We suggest that the studied facies of the Evenki Formation accumulated mostly under intertidal and, possibly in part, under lower supratidal conditions, which alternated depending on eustatic fluctuations in the basin. A conceptual model of the genesis of the Evenki Formation on the Siberian Platform has been developed.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forms of Salt Rises as Indicators of Interaction of Geodynamic Systems 作为地球动力系统相互作用指标的盐上升形式

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700200

D. S. Zykov, A. V. Poleshchuk, A. O. Agibalov, S. Yu. Kolodyazhny, E. A. Manuilova

引用次数: 0

Structure of the Quaternary Sheet in Petrozavodsk Bay of Lake Onega According to Seismoacoustics 根据地震声学分析奥涅加湖彼得罗扎沃茨克湾的第四纪地壳结构

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700315

A. K. Mirinets, A. E. Rybalko, M. I. Aleshin, D. A. Subetto

引用次数: 0

Structural-Facies Typification of Sections of the Bazhenov High-Carbon Formation of the West Siberian Basin 西西伯利亚盆地巴热诺夫高碳层剖面的构造-岩相类型划分

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700261

I. Ya. Bogatyreva, Yu. A. Kotochkova, N. S. Balushkina, O. V. Khotylev, M. M. Fomina, N. A. Tyurina, B. I. Yablonovskiy, G. A. Kalmykov

{"title":"Structural-Facies Typification of Sections of the Bazhenov High-Carbon Formation of the West Siberian Basin","authors":"I. Ya. Bogatyreva, Yu. A. Kotochkova, N. S. Balushkina, O. V. Khotylev, M. M. Fomina, N. A. Tyurina, B. I. Yablonovskiy, G. A. Kalmykov","doi":"10.3103/s0145875224700261","DOIUrl":"https://doi.org/10.3103/s0145875224700261","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The Bazhenov high-carbon formation is a set of marine pelitomorphic deposits enriched in organic matter, which accumulated under conditions of subsidence of the bottom of the sedimentary basin, which was not compensated by sediments. The formation contains hydrocarbons in its entire volume and is a promising source for expanding the hydrocarbon resource base. This article presents a set of the results of core studies and interpretation of well logging and seismic survey data for structural and facies typification of sections of the Bazhenov high-carbon formation throughout the area of its distribution. A multi-faceted approach to studying rocks has made it possible to divide the West Siberian basin into 13 structural-facies zones, each of which has its own structural features of the Bazhenov high-carbon formation section, including the total thickness, the presence of lithological and geophysical members and lithophysical types of rocks in the members, and the total concentration of organic carbon. In the future, this typification of sections will make it possible to simplify the modeling of the properties of Bazhenov high-carbon formation and the prediction of the most prospective areas.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sedimentation Environments of the Lower Cretaceous Deposits of the North Caspian 北里海下白垩统矿床的沉积环境

IF 0.4

Moscow University Geology Bulletin Pub Date : 2024-07-17 DOI: 10.3103/s0145875224700273

V. V. Churkina, Yu. A. Kotochkova, G. A. Kalmykov

{"title":"Sedimentation Environments of the Lower Cretaceous Deposits of the North Caspian","authors":"V. V. Churkina, Yu. A. Kotochkova, G. A. Kalmykov","doi":"10.3103/s0145875224700273","DOIUrl":"https://doi.org/10.3103/s0145875224700273","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article describes the sedimentation environments of Lower Cretaceous (Aptian–Albian) terrigenous deposits in the North Caspian. These rocks are oil and gas reservoirs and are characterized by an uneven distribution of the pelitic and silty fractions, which leads to a high content of residual water, low permeability, and poor consistency of the filtration-capacity properties with each other. A detailed lithological and facies analysis of the rocks was carried out for correct interpretation of geophysical data. The following marine environments predominated in the studied area in the Early Cretaceous: coastal, shallow marine, relatively shallow shelf with active hydrodynamics; relatively deep-water shelf with low hydrodynamics. The sections show a change from shallow to deeper facies and vice versa, which allows us to conclude periodic fluctuations in sea level. The results of lithological analysis clearly indicate the predominance of shallow marine and coastal sediments in the Aptian and deeper, shelf sediments in the Albian. Thus, we can suggest a sea transgression at the end of the Early Cretaceous and detect signs of it in the sections of Aptian–Albian deposits in the North Caspian.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0