Thanks for that correction there Parko. Your absolutely right there. I've just looked at a topo map of Jenolan & its quite a bit lower than the surrounding area.
:idea: I wonder if the Diamonds persist in the river valleys up into the high country but avoid the higher points that get colder.
Prof Shine suggested that the main ridge/s of the Great Dividing Range was a disjunction rather than an overlap of ranges of the subspecies.
I think he also mentioned that there are 2 points where the GDR is bisected by river valleys around Lithgow & the Hunter.
So it seems by what you guys were saying before about the Diamond and
metcalfei intergrades around Bathurst, the Diamonds may have slipped through the river valleys of Lithgow to get to Bathurst.
Diamonds were also common in the Cox's River Valley pre 1900, so they may persist up through that way as well, like the Jenolan specimen that Dave pictured, which looks pure to me.
Olivehydra said:-
I recall seeing a diamond in the Blackheath area. Is this higher than Katoomba? Yes it was a while ago, and could have been Leura
That's interesting if you found a Diamond in Blackheath, as I've never heard of one being found there.
Blackheath is about the same altitude as Katoomba or a bit higher.
Katoomba is about 1000 - 1050 whereas Blackheath is about 1000 - 1086 metres.
Though many say Blackheath is colder due to the windchill factor.
Olivehrdra, was it Blackheath or Leura?? Dig deep mate! :wink:
Either way I've never heard of them at either Blackheath or Leura till now. But if they're found at Katoomba albeit rarely, then why not either side :?:
P.S - I'm still looking for pics to illustrate the darker the higher you go theory.
Now where are they :lol: