<a href="https://en.wikipedia.org/wiki/Plate_tectonics" class="extiw" title="w:Plate tectonics">w:Plate tectonics</a>: convergence of two continental plates.
USGS
<ul><li><bdo lang="en" dir="ltr" title="archived on 3 February 2006 at the Wayback Machine"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060203215136/http://pubs.usgs.gov/publications/text/understanding.html">Understanding Plate Motions</a></bdo> (usgs.gov)</li>
<li><small><bdo lang="en" dir="ltr" title="archived on 3 February 2006 at the Wayback Machine"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060203215136/http://pubs.usgs.gov/gip/dynamic/graphics/Fig21contcont.gif">direct link to graphic file</a></bdo></small></li></ul>