October 9, 2003
On the border between Chile and the Catamarca province of Argentina lies a vast field of currently dormant volcanoes. Over time, these volcanoes have laid down a crust of magma roughly 2 miles (3.5 km) thick. It is tinged with a patina of various colors that can indicate both the age and mineral content of the original lava flows. This image was acquired by Landsat 7’s Enhanced Thematic Mapper plus (ETM+) sensor.
Topics: Thematic Mapper, Igneous rocks, Volcanology, Olca, Volcanoes of British Columbia, Landsat 7, Landsat program, Lava, Volcano, Environment