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Paleostress analysis of Cenozoic faulting in the Kraishte area, SW Bulgaria

Journal of Structural Geology, 2011
Abstract Paleostress calculations from fault planes in Paleogene sediments and in the underlying basement were used to determine the orientation and the chronology of the principal stresses during the Cenozoic tectonic evolution of the Kraishte area (southwest Bulgaria). The results show that middle Eocene–early Oligocene WSW–ENE extension led to the
Alexandre Kounov, Jean-Pierre Burg
exaly   +3 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   +2 more
openaire   +1 more source

Mechanical analysis of fault slip data: Implications for paleostress analysis

Journal of Structural Geology, 2011
Abstract Stress inversions are a useful and popular tool for structural geologist and seismologist alike. These methods were first introduced by Wallace (1951) and Bott (1959) and subsequent studies continue to be based on their assumptions: the remote stress tensor is spatially uniform for the rock mass containing the faults and temporally ...
J.O. Kaven, F. Maerten, D.D. Pollard
openaire   +1 more source

Paleostress analysis of heterogeneous fault-slip data: The Gauss method

Journal of Structural Geology, 2007
We describe the Gauss method for reconstructing paleostress tensors from heterogeneous fault-slip data. We define compatibility measure and compatibility function, which verify the compatibility of a given stress tensor with observed fault-slip data. In order to constrain inversion results to mechanically acceptable solutions, we additionally consider ...
Jure Žalohar, Marko Vrabec
openaire   +1 more source

Brittle tectonics and paleostress analysis of the Strzegom – Sobótka granite massif

2023
The Strzegom – Sobótka Massif has been subject of brittle tectonics studies for more than a century. Due to an ongoing extensive mining activity, numerous good exposures occur in a relatively small area, especially in the western part of the massif.
Mariusz Fiałkiewicz   +4 more
openaire   +1 more source

Paleostress analysis from sheared dike sets

Geological Society of America Bulletin, 1989
It is a frequently reported feature of basement terranes that dikes intruded late in the deformation sequence become sheared parallel to the dike margins. It is proposed that such sets of sheets with internal fabrics produced by this shearing along their walls are structures which are dynamically analogous to reactivated faults.
openaire   +1 more source

Field relations between dikes and joints: Emplacement processes and paleostress analysis

Journal of Geophysical Research: Solid Earth, 1986
Sedimentary rocks intruded by Tertiary mafic dikes on the Colorado Plateau typically display systematic dike‐parallel joints. These closely spaced joints occur only near dikes, their spacing commonly increasing with distance from the dike contacts. Igneous breccias along some of these joints indicate that the joints are not younger than the dikes and ...
Paul T. Delaney   +3 more
openaire   +1 more source

Forty years of paleostress analysis: has it attained maturity?

Journal of Structural Geology, 2019
Abstract Powerful methods of paleostress analysis from fault-slip data have been used since the 1970's, and have demonstrated their capacity for reconstructing stress fields with tectonic significance. However, in some cases, these methods have been applied to samples that do not fulfill basic requirements, or developed on the basis of unsound ...
openaire   +1 more source

Incremental fold test for paleostress analysis using the Hough transform inverse method

Journal of Structural Geology, 2011
Abstract An incremental fold test method for the paleostress inversion of a fault-slip dataset obtained from folded sedimentary rock is proposed. The method provides not only the orientations of the three principal stress axes and the stress ratio, but also the relative timing of folding and faulting.
Satoshi Tonai   +2 more
openaire   +1 more source

Cretaceous paleostress analysis of the Adriatic Carbonate Platform (AdCP)

2004
The Adriatic belt of the AdCP, or what is to-day the Adriatic zone of the External Dinarides, is largely built up of Upper Cretaceous platform limestones. They have variable thicknesses in different structural settings, and, in adition to that, a rather pronounced facies variability.
Gušić, Ivan   +2 more
openaire   +2 more sources

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