La Cabeza del Indio
This was taken about 10 minutes before the boiling cloud photo I previously posted from this same evening, and looking south in the opposite direction toward the Tridente on the left, and the Cabeza del Indio peak on the right. The geology revealed in the mountain's face is fascinating to me, as one can clearly see dark slate/shale stone both above and below a large granitic intrusion. The best theory that Jarrod and I could come up with is that the granite welled up through massive cracks in the shale as the Andes were forming, and didn't quite break the surface of the older rock. It was only when the glacial tongues of the Hielo Sur swelled during the last ice age that the granite was revealed, a mountain range like a large geode, 'suddenly' sliced open by time to reveal a captivating surface.
Bill B. - I'd be interested to hear Gordon's interpretation of this situation!
La Cabeza del Indio
This was taken about 10 minutes before the boiling cloud photo I previously posted from this same evening, and looking south in the opposite direction toward the Tridente on the left, and the Cabeza del Indio peak on the right. The geology revealed in the mountain's face is fascinating to me, as one can clearly see dark slate/shale stone both above and below a large granitic intrusion. The best theory that Jarrod and I could come up with is that the granite welled up through massive cracks in the shale as the Andes were forming, and didn't quite break the surface of the older rock. It was only when the glacial tongues of the Hielo Sur swelled during the last ice age that the granite was revealed, a mountain range like a large geode, 'suddenly' sliced open by time to reveal a captivating surface.
Bill B. - I'd be interested to hear Gordon's interpretation of this situation!