/Gravity anomalies longitudinal profile between Rosario (Santa Fe) and Victoria (Entre Ríos), Argentina, for prospective purposes

Abstract

"The Chaco-Parana basin is an intracratonic basin developed in the South American platform since Paleozoic era, having strong sedimentary column. Despite many geophysical studies have been carried out about this basin, very little has been done over the Paraná River, which is 70 Km wide at 33° South latitude. Aiming the determination 
of the basement depth in this zone, a gravity 
profile was developed linking Rosario and 
Victoria cities, at both margins of the river. 
For that, 20 gravity values were determined 
using La Coste & Romberg and Scintrex gravity meters. The location of stations was obtained 
by double frequency GPS measurements. The 
profile was laterally extended using the gravity 
data base of Argentina in order to analyze 
the regional anomaly. Classical density values 
were used for the gravity profile inversion. 
These values are coincident with those from 
exploration wells. Two different procedures 
were performed having similar conclusions 
from both of them."