If Concepcion, Chile, on the West coast of South America, moved west 10 feet, and Buenos Aires, on the east coast of south America, moved one inch, did the continent get wider?
(My DH posed that question. I’m not that smart.)
You raise a very good question. Did sufficient uplift occur from underneath to displace that much land to the west? Or did the elevation fall?
Expanded tax base. :-)