This page shows the effects of wind erosion in polishing basalt blocks in a single locality in the Puna, followed by wind erosion forming tafone in ignimbrite and gneisses.
Figure 1a) Ventifacto. |
Figure 1b) Ventifacto. |
Figure 1c) Ventifacto. |
Figure 1d) Dreikanter: a three-sided pyramid. |
Figure 1e) Dreikanter: a three-sided pyramid. |
Figure 1f) Dreikanter: a three-sided pyramid. |
Figure 1g) Ventifacto. |
Figure 1h) Ventifacto. |
Figure 1i) Ventifacto. |
Figure 1j) Ventifacto. |
Figure 1i) Ventifacto. |
Figure 1j) Ventifacto. |
Figure 2a) Tafone in migmatitic gneiss from around El Penon. |
Figure 2b) Same. |
Figure 2c) Tafone in Cerro Galan ignimbrite from Laguna Grande. |
Figure 2d) Tafone in Cerro Galan ignimbrite from Laguna Grande. |
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Figure 2e, f) Tafone in Cerro Galan ignimbrite from Laguna Grande. |
Figure 2g) Tafone in Cerro Galan ignimbrite from Laguna Grande. |
Figure 2h) Giant mushroom. |
Figure 2i) Tafone in Cerro Galan ignimbrite from Laguna Grande.. |
Figure 2j) Lithic inside ignimbrite resisting erosion by horizontal winds. |