I thought I had posted to this thread already...
Adam, you got a heck of a blast outta that! Well done! The detail is as crisp as my Asquith, no joke.
Running out of time but I just wanted to add a point or two. Morta can and frequently does add it's now character to the smoke. It is possible that scorching during processing the block in to a pipe can make a pipe more aromatic...I don't really know....
This can present as a peat-like flavor. One of my pipes was so heavily scented (only noticeable when burning tobacco) that it completely over-writ any Va based blend for at least 20-odd bowls. While another only mildly added an earthy note for the same duration. That taste does abate with break in, though in at least a few of the pipes it does return to a degree when the pipes sit unsmoked for a long while.
If you are a big lat smoker you might scarcely notice it.
Anyway, though frequently called bog oak, oak is only one species of donor tree, yew, and pine are others. The color is a function of time, yes, but it also a result of tannins within the wood binding with iron and other chemicals in the preservative mixture. I would suspect that blond morta is not oak as oak is rich with tannins, though this is only speculation and it could easily be due to iron poor sediment.
Of course Morta is only semi-fossilized and is thus harder but less dense than briar. As a result it radiates heat much more efficiently and doesn't hold on to a ghost as tenaciously.