Geology, Geophysics and Environment最新文献_第3页

Geochemistry indices and biotests as useful tools in the assessment of the degree of sediment contamination by metals 地球化学指数和生物试验是评价沉积物受金属污染程度的有用工具

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Geology, Geophysics and Environment Pub Date : 2023-02-24 DOI: 10.7494/geol.2023.49.1.5

Tomasz Koniarz, M. Tarnawski, A. Baran

{"title":"Geochemistry indices and biotests as useful tools in the assessment of the degree of sediment contamination by metals","authors":"Tomasz Koniarz, M. Tarnawski, A. Baran","doi":"10.7494/geol.2023.49.1.5","DOIUrl":"https://doi.org/10.7494/geol.2023.49.1.5","url":null,"abstract":"Ecological and geochemical indicators have been widely accepted as tools with the potential for rapid risk assessment of metal contamination of bottom sediments. In this study, we propose a selection of such indicators to characterize the potential ecological risks stemming from metal contamination of the bottom sediments of the Chechło reservoir (S Poland). The Chechło reservoir is located in an area formerly occupied by zinc and lead ore mining and processing industry. High amounts of metals, especially zinc (39.37–4772.00 mg/kg d.m.), cadmium (0.37–21.13 mg/kg d.m.) and lead (4.50–434.49 mg/kg d.m.) have been found in the bottom sediments. Both geochemical (CD – contamination degree) and ecological indices (mean PECQ) were indicative of bottom sediment contamination and their potential toxicity to living organisms. Most of the bottom sediment samples (71%) examined were toxic for Heterocypris incongruens, while only 9% of the samples were toxic to Sinapis alba. However, no significant correlations between the metal content and the response of the test organisms were observed. Correlation and principal component analyses (PCA) showed that silt and clay fractions were the key factors influencing the metal content in the sediments. Our study makes a contribution to building evidence of the need to integrate several indices for the assessment of environmental risks related to the presence of metals in bottom sediments rather than relying on a single one.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"14 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81381457","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

An updated earthquake catalog for Bangladesh: an attempt at a seismic risk evaluation 更新的孟加拉国地震目录:地震风险评估的尝试

IF 0.8

Geology, Geophysics and Environment Pub Date : 2023-02-20 DOI: 10.7494/geol.2023.49.1.37

Md Abdullah Salman, Md Saleh Shakeel Nomaan, Ayon Saha

{"title":"An updated earthquake catalog for Bangladesh: an attempt at a seismic risk evaluation","authors":"Md Abdullah Salman, Md Saleh Shakeel Nomaan, Ayon Saha","doi":"10.7494/geol.2023.49.1.37","DOIUrl":"https://doi.org/10.7494/geol.2023.49.1.37","url":null,"abstract":"A unique, consistent, and uniform earthquake catalog is crucial for assessing seismic hazards in any locality. This study aims at compiling and processing a better uniform earthquake catalog, using this catalog to identify the probable subduction zone, and assessing seismicity parameters for Bangladesh. The study area is bounded by the geographical limits 16–29°N and 86–96°E. It includes a sum of 48,342 events which are compiled as 1.0 to 8.5 magnitudes (MW) and time period from 1548 to 2020 yrs. Uniformization is made between the body, surface wave, and moment magnitude scales to unify the catalog in terms of MW. For seismic hazard assessment or prediction studies, this catalog comprises earthquake events from Bangladesh and adjoining regions. The assessed MC obtained is around 4.0–5.0, which leads to a, b value varying between 0.71–1.12 and an a value varying between 4.85–7.12. The findings show that the MC is lower at the border of the Chittagong-Sylhet through Hill tracts than the northern part of the area with an MC 4.5–5.0 and a, b value close to 1.00. The results indicate that the study area is a seismically highly active zone in the context of seismicity parameters. Finally, the compiled catalog, seismicity of the area and a probable deformation front are presented and are recommended for use in assessing seismic hazard analysis in Bangladesh.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"15 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76630451","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

Glacial geomorphology and Pleistocene glacier reconstruction in the Demänovská Valley, Low Tatra Mountains, Slovakia 斯洛伐克下塔特拉山脉Demänovská山谷冰川地貌与更新世冰川重建

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Geology, Geophysics and Environment Pub Date : 2023-02-14 DOI: 10.7494/geol.2023.49.1.19

Agata Pyrda

{"title":"Glacial geomorphology and Pleistocene glacier reconstruction in the Demänovská Valley, Low Tatra Mountains, Slovakia","authors":"Agata Pyrda","doi":"10.7494/geol.2023.49.1.19","DOIUrl":"https://doi.org/10.7494/geol.2023.49.1.19","url":null,"abstract":"In the Western Carpathians, clear evidence of the Pleistocene glaciations only occurs in two mountain massifs – the Tatra and Low Tatra Mountains. The Low Tatra Mountains (2043 m a.s.l.), contrary to the higher and more strongly glaciated Tatra Mountains (2654 m a.s.l.), have previously been much less attractive for scientific research. Hence, in these mountains, both glacial landforms and chronology, together with a detailed reconstruction of glacier geometry and resulted equilibrium line altitude (ELA), are poorly documented. The aim of this paper is to characterize the glacial relief and reconstruction of geometry and ELA of the Zadná voda glacier in the Demänovská Valley system which belongs to the category of the largest Pleistocene glaciers on the northern slope of the Low Tatra Mountains. The mapping results show that a freshly shaped, massive terminal moraine of maximal ice extent (MIE, likely formed during the global Last Glacial Maximum – LGM) occurs 4.3 km distance down-valley from the glacial cirque backwalls. There is no evidence of deposits from older glaciations beyond the terminal moraine down the valley. The terminal zone of the MIE features a fresh morainic landscape with hummocky topography with kettle hollows and the only known morainic lake in the Low Tatra Mountains – Vrbické pleso. During the MIE, the Zadná voda glacier covered 7 km2 of the area and featured a mean thickness of 48 m. The ELA of this glacier was 1433 m, determined by the area-altitude balance ratio (AABR) 1.6 method, which is a similar value to the LGM ELA calculated in the Western Tatra Mountains. The recessional stages were only recognized in the cirques area, where one or two generations of debris-covered glaciers and rock glaciers mark the final deglaciation of the study area.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"337 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84100076","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

Land use/land cover changes in the period of 2015–2020 in AngYai Village, Sikhottabong District, Vientiane Capital, Lao PDR 老挝首都万象Sikhottabong区昂雅村2015-2020年土地利用/土地覆盖变化

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Geology, Geophysics and Environment Pub Date : 2022-11-09 DOI: 10.7494/geol.2022.48.3.279

B. Thien, Bounthavy Sosamphanh, Bounheuang Yachongtou, V. T. Phuong

引用次数: 3

Opoka – a mysterious carbonate-siliceous rock: an overview of general concepts 奥波卡-一种神秘的碳酸盐-硅质岩石:一般概念概述

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Geology, Geophysics and Environment Pub Date : 2022-11-07 DOI: 10.7494/geol.2022.48.3.257

Agata Jurkowska, Ewa Świerczewska‐Gładysz

{"title":"Opoka – a mysterious carbonate-siliceous rock: an overview of general concepts","authors":"Agata Jurkowska, Ewa Świerczewska‐Gładysz","doi":"10.7494/geol.2022.48.3.257","DOIUrl":"https://doi.org/10.7494/geol.2022.48.3.257","url":null,"abstract":"The opoka is a carbonate-siliceous marine sedimentary rock, forming a thick succession of Upper Cretaceous age in Poland and in other regions of Europe. This rock has been studied for over 150 years, but only the use of modern analytical techniques enables for the formulation of its mineralogical definition, which identifiesthe distinct features of opoka and allows it to be distinguished from other rocks (e.g. chalk, gaize). Parallel to the petrographic research on opoka, its palaeobathymetric interpretations, which were based on the palaeotectonic models of Danish-Polish Trough inversion has been revised. Depending on the model of palaeotectonic history, opoka has been interpreted as a deep-water or shallow facies, without detailed petrographic studies of its mineralogical composition. The paper presents various aspects of opoka, including history of the term, nomenclature, mineralogical composition, microtexture and palaeoecological significance of Cretaceous opoka. New data which permit precise definition of this rock term, and its mineralogical composition are discussed in the light of palaeoecological reconstructions, bathymetry and existing models of opoka distribution.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"24 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75982749","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: 1

An evaluation of organic matter dispersed in the Menilite Formation in Silesian Nappe (Polish Outer Carpathians): an optical microscopic approach 西里西亚推覆体(波兰外喀尔巴阡山脉)Menilite组中分散的有机质评价:光学显微方法

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Geology, Geophysics and Environment Pub Date : 2022-10-28 DOI: 10.7494/geol.2022.48.3.243

M. Waliczek, G. Machowski, M. Solecki, M. Stefaniuk

{"title":"An evaluation of organic matter dispersed in the Menilite Formation in Silesian Nappe (Polish Outer Carpathians): an optical microscopic approach","authors":"M. Waliczek, G. Machowski, M. Solecki, M. Stefaniuk","doi":"10.7494/geol.2022.48.3.243","DOIUrl":"https://doi.org/10.7494/geol.2022.48.3.243","url":null,"abstract":"In this study, optical microscopic analyses were applied to evaluate the thermal maturity, characteristics of solid bitumen, and other organic matter finely dispersed in Oligocene shales of the Menilite Formation in the Iwonicz-Zdrój–Rudawka Rymanowska Fold (IRF) and Bóbrka–Rogi Fold (BRF) of the Central Carpathian Synclinorium of the Silesian Nappe, Outer Carpathians, Poland. The investigation was carried out at two-unit depths of the shallow and deeper D-1 sections (430 m – IRF and 4,300 m – BRF) and outcrop samples (BRF). The mean random huminite reflectance values indicate immature conditions with respect to hydrocarbon generation in samples from the D-1 shallow section (VRo≈0.40%) and in the outcrop samples (VRo=0.36%). The degree of thermal maturity of the organic matter from a depth of about 4,300 m – BRF based on random vitrinite (VRo≈0.80%) and solid bitumen (BRo≈0.65%) reflectance measurements is associated with the “oil window” for petroleum generation. The organic components dispersed in the examined Menilite Formation samples are typical for hydrocarbon-prone organic matter, suggesting the dominant kerogen type II. The potential precursor maceral for solid bitumen occurring in the examined samples from the deeper D-1 sections is largely the alginite maceral.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"6 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80685887","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: 1

The application of the 2D/3D electrical resistivity tomography (ERT) method in investigating the carbonate karst of the Zakrzówek Horst 二维/三维电阻率层析成像(ERT)方法在Zakrzówek Horst碳酸盐岩岩溶研究中的应用

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Geology, Geophysics and Environment Pub Date : 2022-10-28 DOI: 10.7494/geol.2022.48.3.319

Bernadetta Pasierb

引用次数: 0

An examination of the glaciomarginal fan of the Odranian glaciation at the Mokrzeszów site, Sudetic Foreland, SW Poland 波兰西南部苏台德前兰Mokrzeszów地点对奥德良期冰川边缘扇的考察

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Geology, Geophysics and Environment Pub Date : 2022-10-24 DOI: 10.7494/geol.2022.48.3.287

D. Krzyszkowski, Lucyna Wachecka-Kotkowska, J. Skurzyński

{"title":"An examination of the glaciomarginal fan of the Odranian glaciation at the Mokrzeszów site, Sudetic Foreland, SW Poland","authors":"D. Krzyszkowski, Lucyna Wachecka-Kotkowska, J. Skurzyński","doi":"10.7494/geol.2022.48.3.287","DOIUrl":"https://doi.org/10.7494/geol.2022.48.3.287","url":null,"abstract":"The article presents the results of research from the Mokrzeszów site in the Sudetic Foreland. Lithopetrographic and sedimentological analyses of sediments from the Middle Polish Glaciations (Early Saalian, Odranian, MIS6) in this area indicate the overrepresentation (90–95%) of large Scandinavian erratics. The deposits, representing a repetitive sequence of Gp-Gms-Sp-Sh/Sr(Dmm) lithofacies, accumulated during at least two episodes of glacial outburst floods and six sedimentary cycles. High-energy flows are estimated for the Gms and Gp facies at about 5 m∙s−1 and low-energy flows indicate 0.8 m∙s−1 for the Sp/Sh/Sr facies, to the lack of flow (Fm). The sedimentary sequences confirm the existence of a fan, which may have originated as a subaqueous steep coarse-grained fan in glacial-flow-lake-outburst floods that formed between the ice sheet front and the morphotectonic edge of the Sudetic Marginal Fault line and within the Roztoka-Mokrzeszów Graben, or as an aerial, piedmont fan on the Sudetic Marginal Fault edge. The sediments show discontinuous deformations – gently sloping faults and fractures from glacioisostatic stresses. The fault activity is probably related to the reactivation of the faults due to ice loading during or after the older Saalian glaciation.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73054261","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

Mineralogical characteristics of the heterolithic formations from the Carpathian Foredeep Miocene sediments, south-eastern Poland 波兰东南部喀尔巴阡前深中新世沉积物异石器时代地层矿物学特征

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Geology, Geophysics and Environment Pub Date : 2022-09-26 DOI: 10.7494/geol.2022.48.3.219

A. Przelaskowska, Urszula Zagórska, A. Urbaniec, G. Łykowska, J. Klaja, J. Grela, Katarzyna Kędracka

{"title":"Mineralogical characteristics of the heterolithic formations from the Carpathian Foredeep Miocene sediments, south-eastern Poland","authors":"A. Przelaskowska, Urszula Zagórska, A. Urbaniec, G. Łykowska, J. Klaja, J. Grela, Katarzyna Kędracka","doi":"10.7494/geol.2022.48.3.219","DOIUrl":"https://doi.org/10.7494/geol.2022.48.3.219","url":null,"abstract":"Heterolithic complexes from the Carpathian Foredeep are a subject of growing attention as many natural gas accumulations of industrial importance have been discovered in such formations during the last decades. The aim of the presented work was to determine lithotypes of different lithology and mineralogical composition in the heterolithic sequences. Individual lithotypes were distinguished of macroscopic observations of cores, X-ray diffraction analysis (XRD) and X-ray fluorescence method (XRF). Preliminary distinction of the lithotypes was based on macroscopic observations of the core samples. Correlation plots between the contents of particular minerals (XRD analyses) and corresponding elements (XRF analyses) were used for verification of the lithotypes distinguished on the basis of macroscopic observations. Swelling properties of the investigated rocks were determined using the cation exchange capacity (CEC) values. The following lithotypes were identified: medium- to fine-grained sandstones, fine- to very fine-grained sandstones, clayey sandstones, sand-dominated heteroliths, heteroliths with equal proportions of sandstones and mudstones, mud-dominated heteroliths, mudstones, clayey shales. Such division provides a basis for precise petrophysical characterization of the analyzed profiles, that is assignment of particular petrophysical parameters values to individual lithotypes. More reliable petrophysical parameters in the geophysical interpretation of heterolithic sequences allow for a more precise determination of zones characterized by good reservoir parameters.","PeriodicalId":12724,"journal":{"name":"Geology, Geophysics and Environment","volume":"27 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78406512","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

ReMo3D – an open-source Python package for 2D and 3D simulation of normal and lateral resistivity logs ReMo3D -一个开源的Python包，用于正常和横向电阻率测井的2D和3D模拟

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Geology, Geophysics and Environment Pub Date : 2022-06-29 DOI: 10.7494/geol.2022.48.2.195

Michał Wilkosz

引用次数: 0