Quarterly Journal of Engineering Geology and Hydrogeology Editorial by M.G. Winter Quarterly Journal of Engineering Geology and Hydrogeology Volume 45(1):3-6 February 22, 2012 © 2012 The Geological Society of London

The front façade of the original Basilica de Guadalupe (right). The front façade of the original Basilica de Guadalupe (right). The building to the left is the new Basilica and the wall is vertical demonstrating the degree of lean that results from the settlements experienced by the original building. The author’s estimate is that the original Basilica leans by around 5° to the vertical. M.G. Winter Quarterly Journal of Engineering Geology and Hydrogeology 2012;45:3-6 © 2012 The Geological Society of London

An uneven footpath caused by differential settlement – in this case the ‘step’ is at the join between the approach embankment and the deck of a motorway over bridge in central Mexico City. An uneven footpath caused by differential settlement – in this case the ‘step’ is at the join between the approach embankment and the deck of a motorway over bridge in central Mexico City M.G. Winter Quarterly Journal of Engineering Geology and Hydrogeology 2012;45:3-6 © 2012 The Geological Society of London

El Ángel de la Independencia on the Paseo de la Reforma showing the steps, in two colours of stone built to facilitate continued access to the monument after settlement of the surrounding land was much greater than that of the monument itself, which was constructed on piled foundations. El Ángel de la Independencia on the Paseo de la Reforma showing the steps, in two colours of stone built to facilitate continued access to the monument after settlement of the surrounding land was much greater than that of the monument itself, which was constructed on piled foundations. M.G. Winter Quarterly Journal of Engineering Geology and Hydrogeology 2012;45:3-6 © 2012 The Geological Society of London