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Central European Geology
Authors:
Máté Zsigmond Leskó
,
Richárd Zoltán Papp
,
Ferenc Kristály
,
József Pálfy
, and
Norbert Zajzon

(“long trench” near the village of Lókút), a stratigraphic key section in the Bakony Mts. ( Konda, 1970 ), which is located close to the Eplény manganese ore deposit. We investigated the occurrence of clay minerals within the Pliensbachian strata, with a

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Thermoanalytical (TA) analysis is not at all a frequently used method for studying travertine. Therefore the application of two TA techniques is presented for characterization of the Buda-Vár-hegy (Castle Hill), Budakalász and Szomód-Les-hegy Quaternary travertine occurrences in this paper. TA data give comparable results with those of oxygen and carbon stable isotope compositions and offer a new way to estimate the temperature of carbonate precipitation.

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Abstract

The geologic key section at the northwestern margin of the village of Bódvalenke represents the stratotype of the Triassic Bódvalenke Limestone Formation and can be considered as the type section of the Bódva Unit of the Rudabánya Hills. The age of the exposed part of the formation in the type section ranges from the Late Anisian (Gondolella constricta cornuta partial range zone) to the early Late Carnian (Gondolella polygnathiformis interval zone). Its typical variety consists of purplish red to pinkish, strongly chertified, thinly-bedded micritic limestone, with frequent intercalations of mmthick purplish red shale layers and whitish-gray coquina beds. These beds are made up of tiny shells of Posydonia-like juvenile bivalves, often showing gradation. This deep water facies represents the transition between Hallstatt Limestone and red radiolarite. This facies type occurs from Oman via southern Turkey throughout the western ophiolite belt of the Hellenides-Dinarides until the Zagorje region in NW Croatia. Its northernmost, displaced occurrence is known in the Rudabánya Hills, NE Hungary, from where the type section is described and illustrated herein.

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The seasonal frequency of noctilucent clouds has been discussed on the basis of visual data from the Northern Hemisphere. It is shown that there is a strong dependence on the atmospheric constitution at the mesospheric level and the seasonal transition in the mesopause. Before spring transition and after autumn transition of the mesosphere at the 80 km level no NLC are observed on the Northern Hemisphere.  Conversely we can conclude the same distribution for the Southern Hemisphere and the strong relation between transition periods and occurrence of NLC.

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. Vesasalo , A. 1959 : On the petalite occurrences of Tammela, SW-Finland. – Geological Survey of Finland, Bulletin 31 , pp. 59 – 74 . Wik , H. , H. Laxström , T

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The correlations between seismic activities and tidal periodicities are investigated at three seismic zones: Vrancea (Romania), Bucaramanga (Colombia) and Hindu Kush (Afganistan). The epicenter of earthquake nests distribution is characterized by intermediate-depth. In this paper, we study the influences of the principal lunar and solar semidiurnal tidal components M2 and S2 on seismic activities. The tidal phase is determined by HiCum stacking method according to the earthquake occurrence time and location. The stacking function could be shifted in time and space domain which provides the possibility to evaluate the seismic activities and tidal periodicities at both. The tidal phase distribution was tested by two independent methods Schuster and Permutation. The null hypothesis between seismic activities and selected tidal periodicities is rejected when the statistical p -values obtained by the two tests reach less than 5% level. As a result of the shift stacking function in time axis, a systematic temporal pattern related to the decrease of the p -values seems to be preceding occurrence of the larger earthquakes. A “tidal tomography” map is obtained when stacking function is shifted in 3D geometry following the epicenters distribution.

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-apatite deposit of Mishdovan, east central Iran. An alkali rhyolite hosted Kiruna-type occurrence in the infra Cambrian Bafq metallotect . – PhD thesis, Univ. of Heidelberg , Geowiss. Abhandl., 37 , 248 p

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., Geomech. Abstr. , 15 , pp. 89 – 97 . Janvier-Badosa , S. , K. Beck , X. Brunetaud , M. Al-Mukhtar 2014 : The occurrence of gypsum in the scaling of stones at the Castle

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Tatra Mts., Poland . – CBGA XVI Congress , Vienna, Abstracts , p. 290 . Kozur , H. , R. Mock 1987 : Remarks to the occurrence of “Germanic Triassic” in the Mecsek Mts

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