Acessibilidade / Reportar erro

Caracterização geológica e estrutural através da interpretação do produto integrado TM-Landsat 5 e dados aerogamaespectrométricos, região de Alta Floresta - MT

This paper deals about the geological, tectonic and structural characterization in the Alta Floresta Gold Province region, MT, through the digital integration of TM-Landsat and gamma ray spectrometry data (total count). The total count - TM integrated product has the essential features for geological interpretation. This product shows structural features from the drainage pattern and relief elements (TM image) and shows the radiometric values (RGB) that contribute to the differentiate lithostructural units. The geological map was composed based on the total count radiometric values interpretation (considering the topography and anthropogenic interference on the radiometric response), in the relief and drainage patterns features (TM image) and field data. Considering the intense anthropogenic activities in the area and almost flat terrain (that prejudice the geological interpretation of remote sensing image), the integrated products generation (TM-gamma) was decisive to the obtention of indispensable data to the mapping. The final product was the geological map of area, in the 1:250.000 scale, with delimited 10 lithostructural units, directly related to radiometric units and structural features. In addition, remarkable N60-70W trend strike-slip systems (ductile and ductile brittle shear zones) were detected and characterized through visual interpretation of the integrated products and field verification.

TM-Landsat 5; airborne gamma ray data; fotointerpretation; geological map; Alta Floresta region


Sociedade Brasileira de Geofísica Av. Rio Branco, 156, sala 2510, 20043-900 Rio de Janeiro RJ - Brazil, Tel. / Fax: (55 21) 2533-0064 - São Paulo - SP - Brazil
E-mail: sbgf@sbgf.org.br