Hi Craig
Shape File is a format defined by ESRI. Therefore the .prj file is written
in ESRI "dialect", compatible with their software.
A naïve solution to your problem (to generate you shape files using GDAL
dialect of WKT1), could be that you just create the shape files without any
specific SRS,
Hi there
We export data in a variety of coordinate systems and formats. Most formats
work with most coordinate systems.
However, the SHP driver always calls MorphToESRI() on its SRS objects
before writing them as WKT to the PRJ files.
I haven't been able to find information on why it does this.