Abstract

RODRIGUEZ, Diana Marcela; HERNANDEZ, Orlando  and  KAMMER, Andreas. STRUCTURAL MODEL OF THE SOAPAGA FAULT FROM SPECTRALLY CORRELATED GRAVITY AND MAGNETIC ANOMALIES, EASTERN ANDEAN MOUNTAINS, COLOMBIA. bol.geol. [online]. 2009, vol.31, n.2, pp.35-50. ISSN 0120-0283.

The aim of this research is to apply spectral correlation, local favorability indexes and Poisson’s theorem as numerical methods for data processing and interpretation of potential field data associated with structural features; these techniques are applied to theoretical and real gravity and magnetic data of the Soapaga fault, located in the Boyacá Department, in the eastern Andean Mountains. Theoretical data of the Soapaga fault was obtained by forward modeling of geological and structural sections. Real data of the Soapaga fault included compiled gravity data and acquired magnetic data along four profiles oriented perpendicular to the fault. As a result, the geometry of the fault and its structural characteristics were obtained by interactive forward and inverse modeling. This methodology allows highlighting anomaly trends associated with density and magnetic susceptibility contrast that occur along the Soapaga fault zone. Additionally, this work provides a quantitative approach to establish the relationship between gravity and magnetic anomalies, supported by a rigorous mathematical methodology rather than isolated data interpretation to better understand the gravity and magnetic signatures of outcropping and hidden structural features.

Keywords : spectral correlation; gravity; magnetic; Soapaga Fault.

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