INVESTIGADORES
BJERG Ernesto Alfredo
congresos y reuniones científicas
Título:
Anomalias geofisicas del sector oriental de las Sierras de Cantantal y Guayaguas, provincias de San Luis y San Juan
Autor/es:
KOSTADINOFF, J; BJERG, E A; RANIOLO, A; SANTIAGO, E; BJERG, E A
Lugar:
Buenos Aires
Reunión:
Congreso; Mineralogía y Metalogenia 2002; 2002
Institución organizadora:
Asociación Mineralógica Argentina
Resumen:
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There arc no outcrops
of the ultrabasic rocks of the Sierras de Valle Fértil and La Huerta to the south
of this mountain range. In the Sierras de Cantantal and Guayaguas most of the outcropping
units are sedimcntary rocks of Mesozoic age while ultrabasic rocks arc scarce
or absent. Two equipotential methods, gravimetry and magnetometry allowed us to
recognize the continuity of these rocks in the plains but displaced 20 km to the
East of the Sierras de Cantantal and Guayaguas. The size of these ultrabasic bodies
which do not crop out is consistent with the rccognized units in the Sierras de
Valle Fértil and La Huerta. Their identification means that these rocks are extended
from 31 28' S (Marayes locality, San Juan) to 32 15' S (in San Luis province).
