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An unknown Ni-Al hydrosilicate 一种未知的Ni-Al水硅酸盐
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.6
Z. Maksimović
{"title":"An unknown Ni-Al hydrosilicate","authors":"Z. Maksimović","doi":"10.1556/AGEOL.46.2003.3.6","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.6","url":null,"abstract":"An \"unknown Ni-Al hydrosilicate\" was found in the karstic nickel deposits in the localities Ba and Takovo in Serbia, and Aghios Ioannis in Greece. It occurs in fine-grained bluish-green and green aggregates with takovite and hydrated halloysite. It is an epigenetic product in the karstic nickel deposit. X-ray powder diffraction (XRPD) data are indexed with a monoclinic unit cell, a = 8.524 (4), b = 7.490 (3), c = 24.214 (6) A, b = 104.55 (6)°, V = 1545.9 A3. The thermal study has shown a characteristic dehydroxylation effect at 450 °C, which distinguishes this mineral from takovite and halloysite. The infra-red technique is very sensitive for the detection of the \"unknown Ni-Al hydrosilicate\": an absorption band between 1250 cm-1 and 1270 cm-1 is very characteristic for this mineral. From chemical analyses of the admixture of this mineral and hydrated halloysite in different proportions from the Aghios Ioannis deposit in Greece, after removal of impurities, the calculated formula is close to Ni2.00 Al2.00...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133265146","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
Integrated Palynology of the Upper Cretaceous in Crimea, Ukraine 乌克兰克里米亚地区上白垩统综合孢粉学
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.4.2
Á. Siegl-Farkas
{"title":"Integrated Palynology of the Upper Cretaceous in Crimea, Ukraine","authors":"Á. Siegl-Farkas","doi":"10.1556/AGEOL.46.2003.4.2","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.4.2","url":null,"abstract":"The author provides new data for the paleontological and stratigraphic understanding of the Upper Cretaceous formations of the Crimean Peninsula. Within the classic Bakhchisaray region 24 samples from six sections (Cenomanian-Maastrichtian) were studied. About 130 palynomorphs have been identified, 11 associations (spore-pollen and dinoflagellate) were differentiated and correlated with nannozones, foram zones and macropaleontological zones. The study confirms that during the Senonian the Crimean Peninsula belonged to the northern nearshore-neritic region of the Tethys and on land to the boreal Normapolles Phytogeographic Province.","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387021","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
Peculiar hydrothermal caves in Budapest, Hungary 匈牙利布达佩斯奇特的热液洞穴
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.4.5
S. Leél-Őssy, G. Surányi
{"title":"Peculiar hydrothermal caves in Budapest, Hungary","authors":"S. Leél-Őssy, G. Surányi","doi":"10.1556/AGEOL.46.2003.4.5","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.4.5","url":null,"abstract":"In the capital of Hungary, Budapest, which Ottokar Kadic`´ called 'the capital of the caves', beneath the Rozsadomb (Rose Hill) district of the city, many thermal-karstic caves were discovered based on the lucky coincidence of geologic-hydrologic-speleological fundamentals. At present more than a hundred caves and cave indications are known in this 5-6 km2 area. The hills are made up of Triassic and Eocene carbonate sequences. Five caves are km-size. The corridors are sometimes longer than 100 m, and their walls are often adorned by spherical niches. The total length of the caves exceeds 35 km at present. The galleries of these caves are situated in the Eocene Szepvolgy Limestone. Some galleries and most of the cave indications can be found in the Eocene Buda Marl. The lowest galleries of some caves extend into the Triassic carbonate sequences. Although many paleokarstic cavities and caverns exist in the area the age of the largest caves - according to the preliminary results of investigations still in pr...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130510061","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: 23
On the role of remote magmatic source and intrabasinal redeposition in the genesis of the Toarvian Úrkút Manganese ore, Hungary 远源岩浆源与基底内再沉积在匈牙利托尔维亚区Úrkút锰矿成因中的作用
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.4.1
Z. Lantos, I. Vető, M. Földvári, P. Kovács-Pálffy
{"title":"On the role of remote magmatic source and intrabasinal redeposition in the genesis of the Toarvian Úrkút Manganese ore, Hungary","authors":"Z. Lantos, I. Vető, M. Földvári, P. Kovács-Pálffy","doi":"10.1556/AGEOL.46.2003.4.1","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.4.1","url":null,"abstract":"","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116127901","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
Lower Miocene lakes of the Balkan Land 巴尔干地区中新世晚期的湖泊
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.4
N. Krstić, Ljubinko Savić, G. Jovanović, E. Bodor
{"title":"Lower Miocene lakes of the Balkan Land","authors":"N. Krstić, Ljubinko Savić, G. Jovanović, E. Bodor","doi":"10.1556/AGEOL.46.2003.3.4","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.4","url":null,"abstract":"The sea existing till the end of Oligocene was dotted with many islands in what is today the Balkan Peninsula area. At the very beginning of the Miocene this region became dry land, the Balkan Land, which was covered through time by lake systems of variable extent. During the Lower Miocene a succession of three lake systems spread not only over the Balkan Peninsula (comprising ex-Yugoslavia, NE Macedonia, SW and SE Bulgaria, and central Greece) but also over the northern parts of the Central and some of the Western Paratethys. Lacustrine environment ended shortly after the beginning of the Middle Miocene, when waters of the epicontinental Paratethys Sea covered the Balkan Land from the north. In this paper we do not consider any of the Upper Miocene and Pliocene lakes.","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130027514","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: 45
Monazite Th-U-total Pb ages of "bostonite" and granite in the Mecsek and Velence Hills Mecsek和Velence山“波士顿石”和花岗岩的独居石th - u -总Pb年龄
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.2
G. Pantó, G. Nagy
{"title":"Monazite Th-U-total Pb ages of \"bostonite\" and granite in the Mecsek and Velence Hills","authors":"G. Pantó, G. Nagy","doi":"10.1556/AGEOL.46.2003.3.2","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.2","url":null,"abstract":"The age determination method based on microprobe measurements of the Th, U and Pb contents of monazite, and used since the nineties, was applied to Hungarian igneous rocks: the so-called \"bostonite\" and the granitoids of the Velence Hills and Mecsek Mountains. Measurement results were evaluated by two different methods that produced similar ages; for the sake of precaution the obtained values were mostly accepted by the greater uncertainty domain calculated by linear regression. The age of 117±13 Ma for the \"bostonite\" proves that this rock is a member of the Lower Cretaceous igneous series. The age of 210±18 Ma obtained for the Nadap granite in the Velence Hills agrees with published data while that of 255±17 Ma obtained for the Kismoragy microgranite in the Mecsek Mountains is younger than previously known.","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114393326","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
Late Quaternary geohistory of Sárrét Basin, based on studies on core Sárrét-2, Hungary 基于匈牙利Sárrét-2岩心研究的Sárrét盆地晚第四纪地史
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.4.4
T. Cserny, P. Sümegi
{"title":"Late Quaternary geohistory of Sárrét Basin, based on studies on core Sárrét-2, Hungary","authors":"T. Cserny, P. Sümegi","doi":"10.1556/AGEOL.46.2003.4.4","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.4.4","url":null,"abstract":"The Sarret marshland is situated along the northeastern foothills of the Bakony Mountains, along a NE-SW-trending neotectonic zone. Investigation of the marshland and the reconstruction of its evolution are especially interesting to compare to the present and the expected future stage of Lakes Balaton and Velence. Based on the sedimentological characteristics of the core sequence and the geochemical, physical, and mineralogical composition of the layers, three sedimentological cycles could be separated. The three cycles represent the most important evolutionary phases of lake formation: flourishing and progressive aging. First, a nutrient-poor, open-water lake existed, where clastic sediments (sand and silty clay) were deposited. During the second phase, phytoplankton-produced autogenic lime mud was deposited in the progressively more eutrophic water. Peat accumulation during the third stage indicates the marsh phase of the lake.The results suggest that the studied sequence developed from Late Glacial to ...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115417755","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
Magmatic garnet in deformed aplite dykes from the Mórágy granitoid, SE-Transdanubia, Hungary 匈牙利东多瑙河Mórágy花岗岩类中变形镁辉岩岩脉中的岩浆石榴石
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.1
E. Király, K. Török
{"title":"Magmatic garnet in deformed aplite dykes from the Mórágy granitoid, SE-Transdanubia, Hungary","authors":"E. Király, K. Török","doi":"10.1556/AGEOL.46.2003.3.1","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.1","url":null,"abstract":"This paper is devoted to the description of spessartine-almandine garnet (Sps: 39.8-60.2%; Alm: 29.1-56.76%; Grs <7%, Prp <3.6%, Adr <5%) from aplitic dyke rocks of the Moragy granitoid near Erdosmecske and Aranyos valley. The aplitic dyke rocks contain K-feldspar, plagioclase, quartz, (myrmekite), ±garnet, ±biotite, chlorite or secondary muscovite, ±ore minerals, ±calcite, ±apatite and ±epidote. Two different zoning types in garnet were detected by electron microprobe. Zoning type I means either Mn enrichment at the expense of Fe towards the rim or towards the core or plateau garnet profiles. Zoning type II displays Ca enrichment at the rim of garnet. A high proportion of Sps component in garnet and the character of zoning type I are considered as typical magmatic features.  The pressure-temperature estimation for aplite formation arises from experimental investigations of Green (1977) in agreement with the hypothetical approach of liquidus relationships by Abott and Clarke (1979) giving a minimum temper...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131819610","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
Test results and empirical formulas of rock mechanical parameters of rhyolitic tuff samples from Eger's cellars Eger窖藏流纹岩凝灰岩样品力学参数试验结果及经验公式
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.5
B. Kleb, B. Vásárhelyi
{"title":"Test results and empirical formulas of rock mechanical parameters of rhyolitic tuff samples from Eger's cellars","authors":"B. Kleb, B. Vásárhelyi","doi":"10.1556/AGEOL.46.2003.3.5","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.5","url":null,"abstract":"Recently, due to population increase in urban areas, underground excavations increasingly influenced the development of cities, parallel with traffic organization. One of the best examples is Eger in North Hungary: several kilometer-long wine-cellars were dug over the centuries beneath the city, which influences further construction; sometimes they present a danger due to the increased weight of surface vehicles as well. Therefore, nowadays the prediction of the stability of these cellars is a question of utmost importance here. The goal of this paper is to statistically analyze the results of strength investigations of the excavated rocks, in order to predict their strength (both compressive and tensile) and Young's modulus. The results of 19 sample blocks are statistically analyzed here in different petrophysical states (air-dry, semi-saturated and fully saturated). The relationships between the different petrophysical constants are also determined and analyzed in this paper. On the basis of these corre...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124135118","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: 32
The Šahy Antiform and its role in the tectonics and paleogeography of the Hungarian Paleogene Basin and the Novohrad/Nógrad Basin (Southern Slovakia and Northern Hungary) Šahy构造体及其在匈牙利古近系盆地和Novohrad/Nógrad盆地(斯洛伐克南部和匈牙利北部)构造和古地理中的作用
Acta Geologica Hungarica Pub Date : 2003-12-01 DOI: 10.1556/AGEOL.46.2003.3.3
D. Vass
{"title":"The Šahy Antiform and its role in the tectonics and paleogeography of the Hungarian Paleogene Basin and the Novohrad/Nógrad Basin (Southern Slovakia and Northern Hungary)","authors":"D. Vass","doi":"10.1556/AGEOL.46.2003.3.3","DOIUrl":"https://doi.org/10.1556/AGEOL.46.2003.3.3","url":null,"abstract":"","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117016219","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
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