Abstract
The Servicio Geológico Colombiano has made available several airborne magnetometry and gamma-ray spectrometry datasets. The information was acquired in 15 blocks that cover approximately 520,000 square kilometers of Colombian territory, representing more than 850,000 linear kilometers of information. The data were collected along flight lines separated by 500 meters or 1000 meters, depending on the area, with sampling rates of 10 Hz (8 meters) and 1 Hz (80 meters) for the magnetometry and gamma-ray spectrometry data, respectively. The information is stored in 30 databases separated for each block and for each of the geophysical methods used. The Servicio Geológico Colombiano has provided a web portal that provides detailed specifications for each database and allows interested parties to see the terms and conditions to access the datasets and to check possible restrictions on access to information. To date, there is no geophysical database in Colombia with the coverage and resolution of these data sets, which will be very useful for geological research and research on potential mineral resources and to support geohazard monitoring, land-use planning and providing a baseline dataset for environmental monitoring.
Highlights
Resumen El Servicio Geológico Colombiano presenta la información geofísica de magnetometría y gamma espectrometría adquirida mediante plataforma aerotransportada
There is no geophysical database in Colombia with the coverage and resolution of these data sets, which will be very useful for geological research and research on potential mineral resources and to support geohazard monitoring, land-use planning and providing a baseline dataset for environmental monitoring
The data correspond to approximately 850,000 linear kilometers of geophysical information obtained by magnetometry and gamma-ray spectrometry instruments on an airborne platform
Summary
The data correspond to approximately 850,000 linear kilometers of geophysical information obtained by magnetometry and gamma-ray spectrometry instruments on an airborne platform. The data are stored in 30 databases (GDB-Oasis montaj, Seequent), one for each surveyed block and one for each geophysical method used, and the databases contain information pertaining to the flight lines (date of acquisition, coordinates and flight height) and the processed and levelled data corresponding to total-field magnetic anomalies (TFMA), total gamma-ray count and relative concentration of equivalent uranium (eU, measured in ppm), equivalent thorium (eTh, measured in ppm) and potassium (K, measured in %). » The airborne geophysical information related to the Colombian territory has a resolution and regional coverage greater than previously available. » The geophysical data will be useful for the regional exploration of potential mineral resources, tectonic studies, regional geological mapping of difficult-to-access areas, landuse planning and management, geohazard research and provide a baseline dataset for environmental monitoring
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