20 September 2013
As expected, images have started to emerge of the La Pintada landslide in Mexico, which is now believed to have killed 68 people earlier this week. A good overview image that I have found is this one from AFP:
This does confirm the location that I identified yesterday:
I have tried to reconstruct the viewpoint of the above photo in Google Earth:
It is clear from this image that the main part of the landslide has gone right through the middle of the town.
Meanwhile, the website http://www.novedadesacapulco.mx/ has this excellent image of the landslide:
The landslide source appears to be quite a large, comparatively deep-seated translational landslide in deeply weathered soil, which has then entrained debris to become a large flow. There is no sign of any geological structure in the source area, but at the toe of the source it appears to have over-ridden a topographical bench that is probably structurally-controlled. The same site has this more detailed view of the head scarp of the landslide, which is surprisingly deep:
The Mexican website (in Spanish) eleconomista.co.mx has this rather low resolution image of the aftermath in the town at the toe of the landslide:
Again, I have tried to reconstruct that view in Google Earth:
There is a large number of buildings beneath the debris; the likelihood of there being any survivors of the landslide seems to be very low.