Central European Geology最新文献_第3页

New Late Cretaceous (Coniacian) sauropod tracks from Hvar Island, Croatia 克罗地亚赫瓦尔岛新发现的晚白垩世(Coniacian)蜥脚类恐龙足迹

Central European Geology Pub Date : 2020-08-27 DOI: 10.1556/24.2020.00001

Péter Solt, A. Szuromi-Korecz, A. Ősi

{"title":"New Late Cretaceous (Coniacian) sauropod tracks from Hvar Island, Croatia","authors":"Péter Solt, A. Szuromi-Korecz, A. Ősi","doi":"10.1556/24.2020.00001","DOIUrl":"https://doi.org/10.1556/24.2020.00001","url":null,"abstract":"In June 2017 a new sauropod trackway locality was discovered in the central part of the Adriatic–Dinaric Carbonate Platform (ADCP), on the island of Hvar (Croatia). The track site is situated on the northern shore of the western edge (Pelegrin) of the island in the upper Turonian – lower Coniacian limestone series. The track site contains altogether 13 footprints arranged in four possible trackways. The largest footprints have a diameter up to 80 cm. In some places the limestone surface is strongly karstified and the tracks are partly eroded, which has certainly modified the original shape and size of the footprints. Microfossil assemblage from the track-bearing beds suggest an early Coniacian age for the tracks. The new trackways on Hvar Island further strengthen the earlier hypothesis that sauropods were present in the western Tethyan archipelago during the late Cenomanian–late Campanian period. In addition, the new tracks, together with those from the Žukova Cove of Hvar, represent two, possibly slightly different stratigraphic horizons close to the Turonian–Coniacian boundary, and suggest that the occurrence of sauropods on the ADCP and possibly also on other parts of the Apulian microplate was not accidental, but rather periodical and more frequent than previously thought.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42490203","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: 2

Central European Geology Pub Date : 2020-06-09 DOI: 10.1556/24.2020.00002

M. Kardos, A. Clement

{"title":"Similarities among small watercourses based on multiparameter physico-chemical measurements","authors":"M. Kardos, A. Clement","doi":"10.1556/24.2020.00002","DOIUrl":"https://doi.org/10.1556/24.2020.00002","url":null,"abstract":"With the introduction of the Water Framework Directive, the relative importance of smaller waterways increased. This statement is particularly true for Hungary, where water-quality monitoring of most smaller rivers only began 12 years ago. Due to their large number, and the lack of historical data concerning their state, systematic monitoring is a challenge.In the current study, 101 creeks are characterized on the one hand by 13 physico-chemical quality parameters (pH, electric conductivity, chloride ion concentration, dissolved oxygen, oxygen saturation, biochemical oxygen demand, chemical oxygen demand, total organic carbon, ammonium nitrogen, total inorganic nitrogen, total nitrogen, orthophosphate and total phosphorus), on the other hand by their watershed's relief, land use, and point sources' pollution indicators. Euclidean distance between water bodies (henceforth WBs) is calculated according to normalized physico-chemical monitoring values. They are grouped into clusters using the hierarchical clustering method. Watershed characteristics are used to explain the clustering via linear discriminant analysis.The investigation revealed that the main driver of cluster group creation is related to human impact: diffuse agricultural and point-source pollution. The first of the three clusters involved water bodies with low or no human impact; the second cluster contained those with medium-level anthropogenic disturbance, while waters with high pollution values formed the third cluster. Mean distance between heavily polluted waters was 1.5 times higher than that between those showing no or low disturbance, meaning that pristine waters are more similar to one another than polluted ones. The current number of samples per river is twice as high in cluster 1 as in cluster 3, revealing that there is room for optimization of the monitoring system. This contribution uses Hungary as a case study.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41555230","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

On the use of nominally anhydrous minerals as phenocrysts in volcanic rocks: A review including a case study from the Carpathian–Pannonian Region 名义上无水矿物在火山岩中作为斑晶的应用:包括喀尔巴阡-潘诺尼亚地区的案例研究

Central European Geology Pub Date : 2019-02-27 DOI: 10.1556/24.62.2019.03

Z. Pálos, I. Kovács, D. Karátson, T. Biró, Judit Sándorné Kovács, É. Bertalan, Anikó Besnyi, G. Falus, T. Fancsik, M. Tribus, L. Aradi, C. Szabó, V. Wesztergom

{"title":"On the use of nominally anhydrous minerals as phenocrysts in volcanic rocks: A review including a case study from the Carpathian–Pannonian Region","authors":"Z. Pálos, I. Kovács, D. Karátson, T. Biró, Judit Sándorné Kovács, É. Bertalan, Anikó Besnyi, G. Falus, T. Fancsik, M. Tribus, L. Aradi, C. Szabó, V. Wesztergom","doi":"10.1556/24.62.2019.03","DOIUrl":"https://doi.org/10.1556/24.62.2019.03","url":null,"abstract":"The past decade has seen a great number of studies dealing with magmatic water contents and how these could be retrieved by the nominally anhydrous minerals’ (NAMs) trace structural hydroxyl (water) contents. Constraints have been made to magmatic hygrometry with clinopyroxene and plagioclase. Although results suggest that the method is more flexible and reliable than melt inclusion studies, they also indicate that the trace hydroxyl contents could still be overprinted by syn- and post-eruptive processes. Clinopyroxenes can hold more structural hydroxyl than plagioclases. A comprehensive review is presented with the inclusion of all published results so far to compile the available pieces of information. As a case study, micro-FTIR measurements are made of a representative set of plagioclase phenocrysts from the Börzsöny Mts. (Carpathian–Pannonian Region). The samples were selected to represent the progress of the volcanic activity in time and space, considering the petrologic and geochemical evolution of volcanic products in well-defined volcanostratigraphic positions. The syn- and post-eruptive cooling rate seems to have the greatest effect on water retention. This means that the systematic investigation of water in volcanic phenocrysts can contribute to distinguish the slowly and rapidly cooling parts of the volcanostratigraphic units.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.62.2019.03","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44635044","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

Relationship between river bank stability and hydrological processes using in situ measurement data 利用现场测量数据研究河岸稳定性与水文过程的关系

Central European Geology Pub Date : 2019-02-11 DOI: 10.1556/24.62.2019.01

G. Mentes

{"title":"Relationship between river bank stability and hydrological processes using in situ measurement data","authors":"G. Mentes","doi":"10.1556/24.62.2019.01","DOIUrl":"https://doi.org/10.1556/24.62.2019.01","url":null,"abstract":"Many river banks throughout the world are prone to landslides; therefore, serious efforts are made to develop landslide early warning systems. This study presents a method by which the stability changes of the river banks can be continuously monitored; necessary measures can be taken in time to reduce the damage. The method was tested in Dunaszekcső (Hungary), where the high loess bank of the River Danube has been intensively moving since 2007. The tilts of the high bank were measured by two borehole tiltmeters. The connection between tilt values and the river- and groundwater-level variations was investigated by multivariable and moving window regression analyses on the basis of a 6-year-long observation from 2011 to 2016. The results show that increasing regression coefficients mean decreasing stability of the high river bank, so the developed method can be used for continuous supervision of the high bank stability. The method is also suitable for studying the causes of motion processes. Investigations showed clearly that the effect of groundwater table variations is two orders of magnitude higher than the water-level variations of the River Danube. In addition to the erosion of the river, various small tilts of the stable and unstable parts also contribute to the arising of new cracks in the stable part, decreasing its width.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.62.2019.01","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47378758","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: 3

A preliminary chronological study to understand the construction phases of a Late Copper–Early Bronze Age kurgan (kunhalom) 了解铜时代晚期-青铜时代早期库尔干（kunhalom）建造阶段的初步时间研究

Central European Geology Pub Date : 2019-01-24 DOI: 10.1556/24.61.2018.11

G. Szilágyi, K. Náfrádi, P. Sümegi

{"title":"A preliminary chronological study to understand the construction phases of a Late Copper–Early Bronze Age kurgan (kunhalom)","authors":"G. Szilágyi, K. Náfrádi, P. Sümegi","doi":"10.1556/24.61.2018.11","DOIUrl":"https://doi.org/10.1556/24.61.2018.11","url":null,"abstract":"The aim of this study is to identify the milestones of landscape evolution around the Ecse Mound (Karcag-Kunmadaras, Hortobágy National Park, Hungary) in the Holocene period by sedimentological and malacological analysis of strata underneath and within the body of the kurgan concerned, including that of the same characteristics of the artificially piled layers. An undisturbed core drilling was carried out and the sedimentological properties of both the mound and of the substrate baserock were revealed, analysis of which has been supported by three radiocarbon (AMS) measurements. The baserock formation during the last phase of the Ice Age, Middle and Upper Pleniglacial, and Late Glacial phases was followed by soil development in the Holocene, while the mound was constructed in two phases at the end of the Copper Age by the communities of the Pit Grave (Yamna or Ochre Grave) Culture. By publishing these preliminary data, it is also intended to draw attention to the need of focused research efforts by standardized methodology in kurgan research, in order to make the results of different studies consistent and comparable.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.61.2018.11","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47999677","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: 2

Smectite appearance in the footwall of the Úrkút manganese ore deposit, Bakony Mts., Hungary 匈牙利Bakony Mts. Úrkút锰矿床下盘蒙脱石外观

Central European Geology Pub Date : 2019-01-24 DOI: 10.1556/24.62.2019.02

M. Leskó, Richárd Zoltán Papp, Boglárka A. Topa, F. Kristály, T. Vígh, N. Zajzon

{"title":"Smectite appearance in the footwall of the Úrkút manganese ore deposit, Bakony Mts., Hungary","authors":"M. Leskó, Richárd Zoltán Papp, Boglárka A. Topa, F. Kristály, T. Vígh, N. Zajzon","doi":"10.1556/24.62.2019.02","DOIUrl":"https://doi.org/10.1556/24.62.2019.02","url":null,"abstract":"The Úrkút manganese ore deposit (Transdanubian Range, Hungary) is one of the largest manganese accumulations to be formed during the Toarcian Oceanic Anoxic Event. In the past 60 years, the area was investigated intensively. The core storage facility of the manganese mine had more than 20,000 sample pieces. Most of these samples have never been investigated. During this study, which is the first widespread clay mineral study in the footwall of the Úrkút manganese ore deposit, we investigated 40 samples from seven boreholes (footwall rocks, black/gray shales below and above the first ore bed, and manganese carbonate ores). Although previous studies assumed that smectite is associated only with the ore beds, our research revealed its appearance in the footwall (Pliensbachian) as well. Simultaneously, tripoli (the local name of completely bleached chert) can also be found in the footwall. Based on the investigated samples, a sharp geochemical difference was detected between Pliensbachian and Toarcian sediments. In this paper, we try to trace the relationship between the smectite content of the footwall and the ore bed and compare these results with the observed geochemical changes. Based on the new data, we assume that the ore accumulation was caused by a flow system (upwelling-controlled ore formation).","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.62.2019.02","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46651169","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

Analysis of shock metamorphic processes in the Zagami meteorite 扎加米陨石的激波变质过程分析

Central European Geology Pub Date : 2019-01-24 DOI: 10.1556/24.61.2018.12

I. Gyollai, Á. Kereszturi, E. Chatzitheodoridis

{"title":"Analysis of shock metamorphic processes in the Zagami meteorite","authors":"I. Gyollai, Á. Kereszturi, E. Chatzitheodoridis","doi":"10.1556/24.61.2018.12","DOIUrl":"https://doi.org/10.1556/24.61.2018.12","url":null,"abstract":"The study of shock-metamorphic features of the Zagami meteorite revealed pseudotachylite-like melt veins with inhomogeneous chemistry and schlieren structure of silica-glass and alkali feldspar melt glass. The feldspar occurs as diaplectic glass in the interstitial area indicating short-time (few seconds) quenching of shock pressure during the impact event, with post-shock annealing. At several locations, apatite needles were identified, which are formed by fluids (cold water with dissolved ions) after the crystallization of cumulate magmatic minerals. Phosphates also could form in impact melts due to circulation of fluids after the impact event. The other signature for the high shock temperature is the presence of Ca–Ti-rich pyroxenes and titanomagnetite, which indicate temperature above 1,200 °C. The formation of silica-rich melt in interstitial area has two scenarios: (a) fractional melting of the Martian crust or (b) formation by pseudotachylite-like impact melting. According to textural observations (schlieren pattern), we propose an impact origin of the large amount of silica-rich melt in this meteorite. Pseudotachylite-like textures were mentioned earlier in terrestrial impact craters; however, we first propose them to form in a Martian meteorite based on their similarity of texture with terrestrial pseudotachylites.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.61.2018.12","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49027905","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: 5

Monitoring urban greenness evolution using multitemporal Landsat imagery in the city of Erbil (Iraq) 利用多时相Landsat影像监测伊拉克埃尔比勒城市绿化演变

Central European Geology Pub Date : 2018-07-19 DOI: 10.1556/24.61.2018.10

S. Hussein

引用次数: 2

Image processing for fractal geometry-based discrete fracture network modeling input data: A methodological approach 基于分形几何的离散裂缝网络建模输入数据的图像处理:方法学方法

Central European Geology Pub Date : 2018-07-16 DOI: 10.1556/24.61.2018.09

Dorottya Kovács, G. Dabi, B. Vásárhelyi

引用次数: 3

Combined study of mineral deposits and deep geothermal for energy production or urban heating – Comparison between the Portuguese (Neves-Corvo) and the Hungarian (Recsk) case studies 用于能源生产或城市供暖的矿床和深层地热的联合研究——葡萄牙（Neves Corvo）和匈牙利（Recsk）案例研究的比较

Central European Geology Pub Date : 2018-06-01 DOI: 10.1556/24.61.2018.07

József Sas, Máté Osvald, E. Ramalho, J. Matos

引用次数: 2