II. MODELE DE DISTRIBUTIE AREALA SI INTRINSECA A SUSCEPTIBILITATII
S. RADAN, MARIA RADAN
Institutul de Geologie si Geofizica, Bucuresti
PETROMAGNETIC METHODOLOGICAL ALTERNATIVES APPLIED TO THE
MAGNETIC SUSCEPTIBILITY STUDY OF EPIMETAMORPHIC SCHISTS
FROM THE POIANA RUSCA MOUNTAINS
(II) PATTERNS OF AREAL AND INTRINSIC DISTRIBUTION OF SUSCEPTIBILITY
(Abstract)
On the basis of abundant observation data regarding the magnetic susceptibility
measured on more than 50,000 core samples from the exploration wells in the
Iazuri – Vladeasa area (Poiana Rusca Mountains, Romania), some aspects
of petromagnetic methodology are analysed.
Four methodological alternatives have been elaborated, each with a magnetic
susceptibility distribution pattern. Two of these petromagnetic patterns are
discussed in the first part of the paper. The susceptibility maps – presented
in two variants here – give some useful information concerning the two
complexes of the Ghelar series which characterize the Iazuri perisynclinal
structure green tuffogene schists – Middle Devonian and sericito-chlorito-quartzose
schists – Upper Devonian). The magnetite-bearing mineralization distribution
within the first complex mentioned is clearly outlined by means of this petromagnetic
pattern. Finally, experimental results in connection with the magnetic susceptibility
anisotropy of the epimetamorphic schists from the Iazuri – Vladeasa zone
are presented. Some elements regarding the magnetic fabric of the rocks are
given.