National Repository of Grey Literature 15 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
Valley evolution of the Biala Lądecka drainage network during late Cenozoic, Lower Silesia, Poland
Stemberk, Jakub ; Štěpančíková, Petra ; Tábořík, Petr ; Coubal, Miroslav
Biala Lądecka (Biala Kłodzka) river is located in Lower Silesia (Poland) and its valley separates Góry Złote Mts.\n(Rychlebské hory Mts.) on the NE from Góry Bialskie Mts. on the SW. We conducted geomorphic investigations on the Biala\nLądecka river basin, in order to determine if Quarternary tectonic activity at the Bělský fault (or near Marginal Sudetic fault) is\ncontributing to the river’s asymmetry. Our research was focused on analysis of selected landforms, DEM parameters,\nmorphometric indexes and their spatial distribution which could potentially indicate recent tectonic activity in the area. At\nselected places geophysical measures were used to discover proper location and structure of Bělský fault or presence of\nsuggested morpholineaments. Preliminary results suggest a Quaternary tectonic activity for the Bělský fault. Moreover we tried\nto clarify nowadays stress regime in study area based striae measurement on fault planes and precise monitoring of selected\nfaults using TM-71 device.
Late Quaternary activity of slow-slip intraplate Mariánské Lázně fault as revealed by trenching and shallow geophysical survey; Bohemian Massif (Czech Republic, central Europe)
Štěpančíková, Petra ; Fischer, T. ; Hartvich, Filip ; Tábořík, Petr ; Rockwell, T. ; Stemberk, Jakub ; Široký, J. ; Sana, Hamid
The NNW-SSE trending Mariánské Lázně Fault (MLF) zone is situated in the western part of the Bohemian Massif (Czech\nRepublic, central Europe) where it intersects NE-trending Cenozoic Eger rift. The northern segment of the MLF controls the\nmorphologically pronounced mountain front of Krušné hory Mts. and eastern limit of Cenozoic Cheb basin, which is famous for\nearthquake swarms (max. ML=4.6) and CO2 emanation. We performed 2D and 3D geophysical survey (electric resistivity\ntomography, ground penetration radar) and 3D trenching to look for large surface-rupturing prehistoric earthquake responsible\nfor pronounced moutain range front. Seven excavated and six hand-dug trenches revealed a complex geology and deformation\nat the study site probably as a result of right-lateral transpression during Late Quaternary. Two Holocene earthquakes 1150-590\nBC and 780-1000 AD were inferred from 14C dating of faulted Holocene colluvium with corresponding magnitudes Mw=6.7-7.0.\nThe latter one is the youngest documented surface-rupturing event in central Europe.\n
Morfological displays of valley's evolution in Králický Sněžník Mountains
Košíková, Karin ; Křížek, Marek (advisor) ; Štěpančíková, Petra (referee)
Valley as an area where records of former activity in upper and lower partsof the region have been deposited, is a valuable source of information suitable for research from which the evolution of the area and the surroundings can be understood. The core of the tesis were the measurments of longitudinal and cross profiles in the field focusing on recording the protrusions. Longitudinal profiles were displayed in the form of a normative graph and based on the characteristics of shape were, using the cluster analysis, dividend into four main classes. With regards to the classification into classes, the distribution of levels in longitudinal and cross profiles has been studied, in connection with tectonics condition of the area. To better understand the development of the Králický Sněžník Mountain, planation surfaces have been defined in altitudes 925-955, 980-995, 1070-1120 and 1210-1325 m.a.s.l.. All the findings have led to better understanding the relationship among levels in longitudinal and cross profiles, planation surfaces and the litological and tectonical conditions in area of interest. The places where the fault had not been expected were further studied and the presence and mutual relation of relief elements indicate the fault might run there. Keywords: valley, longitudinal profile, cross...
Planation surfaces in the Hrubý Jeseník Mts.
Jablonská, Danica ; Křížek, Marek (advisor) ; Štěpančíková, Petra (referee)
Remnants of planation surfaces in Hrubý Jeseník were noted in many geomorphological studies made in the studied area. However, the levels of planation surfaces were never described. The present study deals with the determination of the levels of planation surfaces (the amount of levels) and its connection to neotectonics. The whole area was divided into three parts (Pradědská, Keprnická and Orlická part). Histograms of elevation frequency, the cumulative graph of the area of planation surfaces and the statistical test show six levels of planation surfaces. Six levels were determined in Pradědská and Orlická part and four levels in Keprnická part. The levels of planation were compared to similar areas in the Sudetes. These intervals have significant representation of the flat surfaces within. Six levels of planation surfaces were determined. The main periods of uplift were presented based on the intervals between the levels of planation surfaces. The minimum uplift in the central, most active part is estimated to be 450 m.
Morphostructural analysis of the Hřibovská hornatina
Stemberk, Jakub ; Štěpančíková, Petra (advisor) ; Roštínský, Pavel (referee)
Morphostructural analysis of the Hřibovská hornatina Mts. This work deals with morphostructure analyses of the Hřibovská hornatina Mts., part of the Rychlebské hory Mts. Northeastern border of the studied area is created by the mountain front slope controlled by the Sudetic Marginal fault, which is one of the most conspicuous tectonic structures in central Europe. This is the main reason why works were focused on the analyses of stream network parameters and spatial distribution of those selected landforms which could potentially indicate recent tectonic activity in the studied area. As a result, supposed courses of faults marked in morphology were suggested. Fault activity assessment was considered on changes in erosion intensity indicated in longitudinal and crosswise profiles of stream valleys. Based on the values of Stream-Length index the areas with recent tectonic activity were delimited. The final output of this work is the morphostructure map of the Hřibovská hornatina Mts. and the adjacent area. Key words: Morphostructural analysis, active tectonics, Sudetic Marginal Fault, Hřibovská hornatina Mts.
Morphological types of selected valleys in the High Sudetes
Košíková, Karin ; Křížek, Marek (advisor) ; Štěpančíková, Petra (referee)
Valley is a place, where the record about processes realizing upstream and downstream is deposited. It's valuable source of information about the evolution of landscape around. The Bachelor thesis is focused on creating the genetic classification of valleys, where the evolution and shape were described, then some characteristics useful for studying longitudinal profile were set also. Studies of metrics were performed in GIS. Main interest was attended to lengths, widths and shapes of valleys of Králický Sněžník mountains. Correlation matrix of parameters and dendrogram, which was used to delimit four clusters, were created. Through this Bachelor thesis, where more komplex analysis was used, good applicability of used metrics was shown. This method could be used in Králický Sněžník mountains and in future it could be aplicated in different localities also. Keywords: valley, genetic typology, longitudinal profile, Králický Sněžník mountains
Paleogeografická‚ paleoklimatologická a geochronologická rekonstrukce kontinentálního zalednění Česka
Česká geologická služba, Praha ; Růžička, Miloš ; Štěpančíková, Petra ; Franců, Eva ; Gába, Zdeněk ; Koubová, Magda ; Jankovská, Vlasta ; Lisá, Lenka ; Vídeňský, Aleš ; Braucher, Regis ; Hoare, Peter G. ; Hanáček, Martin ; Jarošová, Lenka ; Sikorová, Jana ; Tyráček, Jaroslav ; Janásková, Barbora ; Víšek, Josef ; Nývlt, Daniel
Ve zprávě jsou shrnuty výsledky projektu rozdělené podle jednotlivých dílčích projektů: Korelace ledovcových akumulací pomocí sedimentárně-petrologických metod, Paleogeografická rekonstrukce zalednění vybraných oblastí Česka a Geochronologické zařazení ledovcových akumulací a tvarů reliéfu Česka.
Neotectonic evolution of the drainage pattern of the NE part of the Rychlebské Mts. and adjacent area
Štěpančíková, Petra
The contribution deals with analysis of influence of neotectonics on river drainage of the NE part of the Rychlebské Mts. and adjacent area of the Žulovská Hilly Land.

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