Results 141 to 150 of about 1,395 (184)

Paleostress field reconstruction in the Oslo region

Marine and Petroleum Geology, 2010
Abstract The geodynamic history of a region is archived in its geologic record which, in turn, may reflect deformation patterns that causally can be related to certain configurations of paleostresses. In the Oslo Region, the exposed geological record ranges from Precambrian high-grade metamorphic rocks through Cambro-Silurian sedimentary rocks to ...
Aline Saintot, Michael Heeremans, Judith Sippel   +2 more
exaly   +4 more sources

Compiling and correlating paleostress fields across Central Europe - A paleostress chart for northern Bavaria and adjacent areas

2021
<p>Detailed knowledge on the temporal and spatial distribution of faults and fractures not only reveals the geodynamic and tectonic evolution of the lithosphere. It is also of increasing importance with regard to economic, social, and environmental challenges such as nuclear waste disposal, gas storage, geothermal energy, natural hazards,
Florian Duschl, Tobias Stephan, Saskia Köhler, Daniel Köhn, Harald Stollhofen, Michael Drews   +5 more
openaire   +1 more source

Microfracturing, paleostress and the growth of faults

Journal of Structural Geology, 1994
Abstract We have analyzed the microfractures in samples taken near one thrust fault and five normal faults of known displacement to test the dependence of microfracture density and distribution on fault slip. We have also recorded the orientation of microfractures as a function of distance from the associated fault surface.
Mark H. Anders, David V. Wiltschko
openaire   +1 more source

Paleostress reconstruction of the southeast Ukrainian Outer Carpathians

International Geology Review, 2021
The paleostress analysis of the southeast part of the Ukrainian Outer Carpathians (UOC) was carried out with the separation and stress inversion TR method (TRM).
Ihor Bubniak, Markos D. Tranos, Andrew Bubniak   +2 more
openaire   +1 more source

Finite-element modelling of Tertiary paleostress fields in the eastern part of the Tajo Basin (central Spain) [PDF]

Tectonophysics, 1998
Three subsequent Tertiary paleostress fields that are deduced from fault-slip data for the eastern part of the Tajo Basin are analyzed by finite-element studies. The modelling results show that maximum horizontal stresses (SHmax) are mainly controlled by
Sierd Cloetingh, Alfonso Muñoz-Martín, Gerardo de Vicente   +2 more
exaly   +2 more sources

Bedding tilt test for paleostress analysis

Journal of Structural Geology, 2005
It is difficult to apply stress inversion to fault-slip data obtained from highly tilted sedimentary layers, especially in areas where criteria for fault sorting are not available at outcrops. This paper shows that a bedding tilt test similar to that used in paleomagnetism allows paleostresses to be inferred.
Atsushi Yamaji, Satoshi Tomita, Makoto Otsubo   +2 more
openaire   +1 more source

Brittle tectonic evolution and paleostress field reconstruction in the southwestern part of the Fennoscandian Shield, Forsmark, Sweden

Tectonics, 2011
Six hundred fault slip data have provided robust paleostress fields within an approximately 35 km3 volume of Paleoproterozoic (1.9 Ga) rocks in the southwestern Fennoscandian Shield, Forsmark, Sweden.
Giulio Viola
exaly   +2 more sources

Paleostresses associated with faults of large offset

Journal of Structural Geology, 1991
Abstract In order to test empirically the limitations of paleostress analysis, we used Etchecopar's computer program to compute the orientations and relative magnitudes of paleostress principal values in two southern Appalachian (U.S.A) thrust zones from minor fault and slickenside attitudes.
Steven Wojtal, Jonathan Pershing
openaire   +1 more source

Paleostress determination in a rock by a fractographic method

Journal of Structural Geology, 1988
Abstract A fractographic technique, hitherto used in ceramics for the evaluation of fracture stress, is adapted here to calculate fracture paleostresses in rocks. An example from a granite in East Sinai is analyzed. The results obtained for the ranges of local paleofracture stress, the severest flaw size and the initial stress intensity factor agree ...
Dov Bahat, A. Rabinovitch
openaire   +1 more source

Gulf of Aqaba Paleostresses status and rifting events

GEO 2008, 2008
Natural fractures and faults are the primary pathways for hydrocarbon migration along with production in many reservoirs. In addition, critically stressed faults (pre-existing faults active in the present stress field) can systematically control permeability, and hence high fluid flow.
Abdelwahab Noufal, M. Dia Mahmoud
openaire   +1 more source