Black Metal DID NOT originate in Norway! Norway definately re-defined Black Metal and made it into what it is today (and yes, made it better).
Burzum represents the end of the original wave of Norwegian Black Metal. Varg Vikernes style consisted of far too much ambience to be considered by most to be "true Norwegian Black Metal", but still to his fans he is the most true musician to date. For better or worse, its in the past. Living on today are still many great bands in the genre, and there isn't an end in sight.
True Norwegian Black Metal is very lo-fi and consists of mostly black and white photography to represent it. Very high consistency of satanic literature in the lyrics, and an "over excited rebelous teenager" attitude.