The ancient and contemporary geophysical stress field in a calcareous mountain-range



The stress systems wliich are and have been active in
a well-defined calcareous mountain massif (the Iloclikonig massif in Austria)
have been determined: (I) f r om joint orientations in the Paleozoic basement,
(II) from joint orientations in the calcareous superstructure and (III) from
in situ stress measurements in a mine beneath the massif. It was found (I)
t h a t t h e stresses which produced the Paleozoic joint system is quite distinct
f r om t h e other systems active in the area, (II) t h a t ' t h e joints in the supers
t r u c t u r e correspond to a stress system t h a t is in conformity with the general
north-south thrust thought to have created the Alps and (III) that
t h e stresses measured in situ represent nothing but the effect of the presentday
overburden topography.

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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X