How would I, in SQL XML Query, (XQuery) to clone/copy a node then update the cloned node's name?

I want to write a query in SQL which takes the Loading Area containing  <areaName>WCMEX</areaName> Duplicate it out and name the newly created one WCMEX1. Does any one know how to do that?

for example i have this.

<root xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <loadingAreas>
    <LoadingArea>
      <areaName>Antartic</areaName>
      <portId>0021</portId>
      <portName>Houston</portName>
    </LoadingArea>
      <LoadingArea>
      <areaName>WCMEX</areaName>
      <portId>0004</portId>
      <portName>Manzanillo, Mexico</portName>
    </LoadingArea>
  </loadingAreas>
</root>

And want this

<root xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <loadingAreas>
    <LoadingArea>
      <areaName>Antartic</areaName>
      <portId>0021</portId>
      <portName>Houston</portName>
    </LoadingArea>
     <LoadingArea>
      <areaName>WCMEX</areaName>
      <portId>0004</portId>
      <portName>Manzanillo, Mexico</portName>
    </LoadingArea>
    <LoadingArea>
      <areaName>WCMEX1</areaName>
      <portId>0004</portId>
      <portName>Manzanillo, Mexico</portName>
    </LoadingArea>
  </loadingAreas>
</root>