Wyniki wyszukiwania - BazTech

1

Rozwój rynny Miazgi–Wolbórki (Polska środkowa) w świetle analizy jej wypełnienia

Rdzany Zbigniew, Frydrych Małgorzata, Szmidt Aleksander

Przegląd Geologiczny

|

2020

|

Vol. 68, nr 7

584--600

EN

The subject of the analysis was a tunnel valley, weakly outlined in the landscape, located in central Poland, between Łódź and the Pilica valley to the west of Tomaszów Mazowiecki. The Miazga and lower Wolbórka flow along this valley. It is a 45-kilometre-long landform, mostly buried, partially covered with fluvial, slope and aeolian sediments, developed on a substratum characterised by varied palaeorelief and lithology. Sediments, which fill the valley, have variable thickness (10-100 m) and a non-flattened bottom gradient line, which indicates the possibility of water flow under hydrostatic pressure in a tunnel valley. Several segments of the channel cut into the Quaternary background. The filling consists mostly of glaciofluvial shallow braided rivers with average to low flow energy. In sedimentological terms, the deposits show significant similarity to the material of glaciofluvial kames found in the Łódź region. The authors believe there is a link between the accumulation in the tunnel valley and a particular variety of areal deglaciation, which was responsible for the formation of the fairly unvarying glacial relief. In outcrops in Łaznowska Wola, including the ones located in a hill that had been previously interpreted as an esker, some intrusive diapiric structures were documented, which reached the land surface. Thesefolded and locally disjunctive disturbances provide evidence for deformational origin of the hill.

2

Gravity Data from the Teboursouk Area (“Diapirs Zone”, Northern Tunisia): Characterization of Deep Structures and Updated Tectonic Pattern

Hachani F., Balti H., Kadri A., Gasmi M.

Acta Geophysica

|

2016

|

Vol. 64, no. 2

379--397

EN

Located between eastern segments of the Atlas and Tell-Rif orogenic belts, the “Dome zone” of northern Tunisia is characterized by the juxtaposition of various structures that mainly controlled the long geodynamic history of this part of the south-Tethyan Margin. To better understand the organization and deep extension of these structures, gravity data from the Teboursouk key area are proposed. These data include the plotting of Bouguer anomaly map and related parameters such as vertical and horizontal gradients, upward continuation and Euler solution. Compared to geological and structural maps available, they allow the identification of new deep structures and greater precision regarding the characteristics and organization of known ones; consequently, an updated structural pattern is proposed.

3

Wpływ właściwości fizycznych i geometrii wysadu solnego na jego wypiętrzanie się

Kortas G.

Górnictwo i Geoinżynieria

|

2008

|

R. 32, z. 1

153-162

PL

Przygotowano model badawczy 3D do testowania ośrodka sprężysto-lepkiego reprezentującego wysad solny i otaczające go utwory. Metoda elementów skończonych została zastosowana do określania prędkości wypiętrzeń wysadu solnego. Przedmiotem testów był wpływ: różnic gęstości skał solnych i utworów otoczenia wysadu, gęstości czapy wysadu, lepkości skał solnych, wysokości wysadu oraz nachylenia skrzydeł wysadu na prędkość jego wypiętrzania. W pracy przedstawiono związki między prędkością wypiętrzania się wysadu a gęstością, podatnością na pełzanie B w prawie pełzania Nortona i geometrycznymi elementami wysadu. Związki te są zgodne z hipotezami o ruchu wysadów solnych. Praca stanowi wycinek studiów przeprowadzanych w ramach projektu badawczego na temat ruchu górotworu w otoczeniu wysadów solnych.

EN

Research model 3D had been carried out for testing elastic-viscous body as the representation of salt dome formation and formations in its surroundings. Finite element method was used for describe salt dome uplift rate. Influence of: density difference of salt dome and formation in dome surroundings, density of cap dome, viscosity of salt rock, high of salt dome, decline of salt dome wings on was the subject of research. The relations between dome uplift rate and density, flexibility on creep B in Norton creep law, geometric elements were shown as formulas in this paper. Consequences of these functions are compatible with geologic hypothesis about of salt dome uplift.

4

Glaciotectonic features in Lithuania

Aleksa P., Bitinas A.

Geological Quarterly

|

2000

|

Vol. 44, Nr 1

9-13

EN

Systematic investigations of glaciotectonic features in Lithuania started in 1994. The first glaciotectonic review map of Lithuania has been carried out as a constituent part of the glaciotectonic map of central Europe. Two groups of landforms linked with glaciotectonic structures (composite ridges and massifs, drumlins and flutings) have been distinguished. Distribution of the pre-Quaternary megablocks in the Quaternary deposits is presented also, and the number of megablocks composed of rocks of different age and lithology is directly proportional to their extension in the sub-Quaternary surface. The other more detailed investigations of glaciotectonic features in Lithuania are connected with regular geological mapping in scale of 1:50 000. Results of the first detailed studies of glaciotectonic features (folds, thrust faults, diapirs) investigated in two outcrops in southeastern Lithuania and in the Lithuanian maritime region are presented in the paper.