Hello David,

I may be able to help you on this one, but before I go any further, can I ask what paper(s) or research have you found which advocates the local source hypothesis referred to in your question?

Rgds,

Graham

Hi Graham

I have so far studied the following principal references:

Al-Kindi et al 2003

Dagley et al 2008

Delaney et al 1986

Jolly et al 1995

MacDonald et al 1988: 2010; 2015

Mitchell et al 1989

Mussett et al 1986; 1988

Speight et al 1982

There are obviously differing opinions between, particularly, MacDonald and Dagley.

I attach the full list of references to date.

With thanks,

David