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Earth Science Institute of the Slovak Academy of Sciences

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JOINTING IN THE SILESIAN NAPPE (OUTER CARPATHIANS, POLAND) - PALEOSTRESS RECONSTRUCTION

• Geologica Carpathica
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• Volume 53 No.5 / October 2002

Published: Oct 2002

Pages: 315 - 325

Authors: LEONARD MASTELLA, ANDRZEJ KONON

Abstract: The joint network in the Silesian Nappe is composed of a shear system (diagonal sets — SR, SL) — striking in the present position at high angles to map-scale fold axes, a single extension set T — striking sub-perpendicular to these axes, fold parallel joints L and L´ striking parallel or at small angles to map-scale fold axes. For paleostress reconstructions penetrative S_R, S_L and T joint sets were analysed from 197 outcrops. In the paleostres analysis the angular difference between the σ_Hmax directions calculated from shear (S_R, S_L) and extension T joints is notable. The angular difference between these σ_Hmax directions suggests that it is a result of a slight tectonic bending of the investigated Silesian Nappe arc, which took place between the nappe thrusting phase and the proceeding uplift phase of this part of the Outer Carpathians arc.

Keywords: Miocene, Oligocene, Outer Carpathian arc, Silesian Nappe, tectonic bending, shear and extensional joints, paleostress

Volume 53 no. 5 / October 2002

• MARIA JELENSKA, TOMASZ WERNER, STANISLAW MAZUR

  PALEOMAGNETIC AND ROCK MAGNETIC PROPERTIES OF THE LOWER PALEOZOIC METAMORPHIC COMPLEX OF THE RUDAWY JANOWICKIE (WEST SUDETES, POLAND)

• JAN SPISIAK, KADOSA BALOGH

  MESOZOIC ALKALI LAMPROPHYRES IN VARISCAN GRANITOIDS OF THE MALE KARPATY AND NIZKE TATRY MOUNTAINS — GEOCHRONOLOGY AND GEOCHEMISTRY

• ZOLTAN PECSKAY, FERENC MOLNAR

  RELATIONSHIPS BETWEEN VOLCANISM AND HYDROTHERMAL ACTIVITY IN THE TOKAJ MOUNTAINS, NORTHEAST HUNGARY, BASED ON K-Ar AGES

• LEONARD MASTELLA, ANDRZEJ KONON

  JOINTING IN THE SILESIAN NAPPE (OUTER CARPATHIANS, POLAND) - PALEOSTRESS RECONSTRUCTION

• LUFTULA H. PEZA, JIRI ZITT

  URGONIAN (EARLY CRETACEOUS) ECHINOIDS OF THE MIRDITA ZONE (SOUTHEAST ALBANIA)

• CEMAL TUNOGLU

  PONTIAN LEPTOCYTHERIDAE AND CYTHERIDEIDAE (OSTRACODA) SPECIES FROM THE EASTERN BLACK SEA REGION OF TURKEY