This is getting silly trisher I can send you an almost identical link saying exactly what I printed earlier:
a "Geordie" comes from Newcastle, Blyth, Ashington, North Tyneside, SOUTH Tyneside and Gateshead
South Shields is in South Tyneside. (unless it has moved without my knowledge).
The (old fashioned) term Sand Dancer is very specific to someone from South Shields and does not mean they are not Geordies.
When referring to the people, as opposed to the dialect, dictionary definitions of a Geordie typically refer to "a native or inhabitant of Newcastle upon Tyne, England, or its environs", an area that encompasses Blyth, Ashington, North Tyneside, Newcastle, South Tyneside and Gateshead
Geordie - Wikipedia
en.wikipedia.org/wiki/Geordie