Aplicación de técnicas de correlación de anomalías geofísicas al Noreste de la Península de Yucatán

Abstract

The ambiguity in the geological interpretation of gravity and magnetic anomalies may be reduced by correlation of both signals. These techniques are based upon the assumption that the variations in lithology and physical properties of the crystalline crust are due to variations in the mineralogy of the rocks. Such variations control the density and magnetite content that cause the anomalies.
In the present paper, the results of the processing of the information from lines 5 and 6 of the project IDOE (International Decade of Ocean Exploration) are show. The data was collected from the north-eastern region of the Yucatan Peninsula in the Caribean Sea. A quantitative comparison between the first vertical derivative of the gravity anomaly and the total magnetic intensity reduced to the pole by means of the Poisson Theorem is made. 
Both gravity and magnetic anomalies show a pattern parallel to the coast. Furthermore, the analysis shows the presence of a ride with orientation NE-SW. This could have been caused by regional faulting which produced a graben, whose edges are marked by the Island of Cozumel and the Arrowsmith Bank.