Hi dear Professors and friends, which composite bands of landsat 8 OLI reveals the geological feature like type of rock or minerals of any specific rock type? my question is specially for sedimentary rocks. Thansk
in resulted raster, pink area refers to granite rock, green area refers to alluvium, purple area refers to coastal alluvium.
2. You can also use this band ratio which is 4/3 , 5/2 , 3/1
in this method orange to brown colour refers to granite, cyan colour refers to alluvium, dark red refers to coastal alluvium and greenish-brown refers to limestone or marbl.